01 Mgx Overview

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2006 Cisco Systems, Inc. All rights reserved. Cisco ConfidentialPresentation_ID 1

MOBILIS

VOICE OVER AAL2TRUNKING PROJ ECT

Dario Bonjak

MGX MEDIA GATEWAY

Overview

J uly, 2007


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Agenda

Applications

1. Role of the MGX Media Gateway2. Mobile Wireless Applications

System Description

Initial Configuration


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Role of the MGX media gateway Media interface

Interface between the TDM network and the ATM- or IP-basedpacket voice network.

Call switching

User call data enters the gateway at a TDM interface in the formofPCM signals. Each user call is allocated a specific DS0 on theTDMinterface.

The gateway is responsible for ensuring that incoming calls areswitched to the correct interface and DS0 on the same or a different,remote gateway.

Bearer processing

User call data is transported through the voice network on what istermed the bearer path, which is distinct from the signaling path orcontrol path.

Various processing on the user (bearer) data to preserve or improvethe voice quality, to optimize the use of network resources, or as

required to convert the TDM input into packets or cells for transportacross the core network.


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Role of the MGX media gateway

Signaling processing

A voice call may carry signaling embedded within the bit stream

(CAS), or signaling for all calls on a TDM interface may be containedwithin a single, separate channel (common channel signaling or CCS).

The gateway handles this signaling information.

This function can entail performing some specific operation in thegateway, passing the signaling to another network element, or simply

transporting the signaling across the network to a remote gateway. Fax and modem handling

In addition to normal user voice call data, the gateway must recognizethe presence of a fax or modem signal, and transparently and reliablytransport the fax/modem traffic to its destination.


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Role of the MGX media gateway

Call setup

In the simplest gateway implementations, DS0s with call data are

simply statically mapped from one TDM interface to another.The MGX media gateway however can work with a control elementcalled the softswitch to dynamically set up and tear down calls.

Multiservice support

Although not strictly a media gateway function, the MGX mediagateway can be equipped to support a variety of network services inaddition to voice. These include ATM, Frame Relay, circuit data, circuitemulation, and layer 3 IP services.


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Gateway and Softswitch Operation

The MGX media gateway operates seamlessly with a variety ofdifferent softswitches, including models from Cisco as well as

integration partners.

One of the key applications for the media gateway/softswitch is toeither partially or completely replace the existing MSCs in themobile network.

distributed packet-based MSC replacement: the control and bearerswitching functions are performed by dedicated elements,specifically the softswitch and the media gateway, respectively.


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Mobile Wireless Core Evolution - 1

Challenges-Voice-Centric NetworkArchitecture

-High cost of DS0transport

-Proprietary Technology-Rigid and inflexiblecircuit switched

technology

PSTN

B

T

S

MSC GMSC

MSC

MSCToday

Point-to-point

trunking

Advantages-Bandwidth Savings-Opex Reduction- Efficient Capex allocation

Phase 1

MSC GMSC

MSC

MSC

V

V

V

VPSTN

B

T

S

PSTN


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Mobile Wireless Core Evolution - 2

PSTN

Packet Transit/

Gateway-MSC

Advantages-Addit ion of softswitch-Further opex savings

(collapsing the mesh)-Optimal routing

MSC

MSC

MSC

V

V

V

V

B

T

S

Soft Switch

Phase 2

V V

BT

S

Soft Switch

IP/MPLSPSTN

Phase 3IP/MPLS

Serving MSC

Advantages-MSC Functionality-Lowered Entry, Scaling &Operations Cost

-Deployment Flexibili ty-3G ready


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Applications

Trunking

The MGX media gateway supports trunking for Voice overATM (VoATM) onlyTrunked Voice over IP (VoIP) is not currently supported.

SwitchingIntroduction of the softswitch as the central control element.

The softswitch provides the ability to dispense with the fixedPVC mesh and to create circuits between voice endpoints on-demand.

Both VoIP and VoATM are supported.


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Applications - TRUNKING

PSTN

MSC

BTS

BTS

MSC

BTS

MSCLocal

PSTN

Consolidates Inter-MSC Trunking

V

V

IP network

Dedicated PVCs

MGX Voice

Gateway

TDM

TDM

ATM network

VV

TDM

TDM


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Applications - SWITCHING

PSTN

MSC

BTS

BTS

MSC

BTS

MSCLocal

PSTN

On-Demand Call Setup

V

V

V

V

ATM/IP

network

SoftswitchControl Link

TDM

TDM

TDM

TDM


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Agenda

Applications

System Description1. Chassis Overview2. PXM45/C Overview

3. AXSM Overview

4. VXSM Overview5. Redundancy Overview

6. Clocking Overview



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Introducing the Cisco MGX 8880 Media

Gateway

Highest VoIP density, scalability and performance

Up to 120,000 Redundant DS0s in a 7 Rack with ECANBackplane Capacity of 45 Gbps

Over 2000 Calls/Sec per 7Rack

Broad range of Network Interfaces

FE, GE, POS OC-12, T1, E1, T3,

OC-3c/STM1 to OC48c/STM16

Optimized for Service Provider Voice Applications

Broad Application Support for Wireless, Wireline andCable

No single point of failure. Active calls maintained

Investment Protection

Evolutionary, Pay-as-you-grow Design

MGX 8880 Media Gateway

Three chassis per 7 rack


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Gateway

T1

E1

T3

Enet, Fast Enet

Gig Ethernet

POS OC-12

OC-3/

STM-1OC-3c/STM1

OC-12c/STM4

PSTN

OC-48c/STM16

Unmatched Network Interface OptionsIntegrated IOS Layer-3 Routing

Unmatched Interface

Options

T1, E1, T3, E3

Packet


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Gateway Up to 24 single-height or 12 double-height

slots for service modules

Slots 7 and 8 (double height slots) reservedfor PXM-45/C

Slots 15, 16, 31, 32 are reserved for ServiceResource Modules. Only used with VISM-PR

Recommended Configuration

Left s ide for 1:1 or 1:N VXSMmodules or Bulk-distributed VISM-PR

Right side for additional VXSMmodules (1:1)

Right side for VISM-PR with 8T1E1backcards

RPM-XF installed left or right side

45 Gbps Switching capacity

3x 1.25 Gbps serial buses per slot

Only one per slot needed to support8064 G.711 (100PPS each) callsVXSM

~5 Gbps needed for 40K G.711 calls

Ai r Intake PlenumAir Intake Plenum

SRME\B

SRME\B

SRME\B

SRME\B

PXM-4

5/C

PXM-4

5/C

11 22 33 44 55 66 77 88 99 1010 1111 1212 1313 1414 1515 1616

1717 1818 1919 2020 2121 2222 2323 2424 2525 2626 2727 2828 2929 3030 3131 3232

3 Serial links per slot:

1.25-Gbps Full

Duplex/Link

Cell Bus OC-6 Capacity

Cell Bus OC-3 Capacity


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MGX 8880 Stacking

MGX

8880

MGX

8880

MGX

8880

14 RU

14 RU

14 RU

Plenum

Up to 3 MGX8880 can be stacked in a standard 7 foot rack.

3RU shorter than MGX8850.

14 RU

24.5

21.5

17.7


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MGX 8880 Front View


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Slot assignments

32 single-height slots

Some single-height slots can be converted to double-height slotsby removing the service module slot dividers.

Each slot on the front of the gateway is numbered and has acorresponding slot located on the back of the gateway.

There are 32 front card slots and 32 back card slots.Slots 1 through 16 are in the top bay

and slots 17 through 32 are in the bottom bay.

Slot 7&8: reserved for PXM45/C

Slot 15, 16, 31 & 32: reserved sor SRMEs.


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Chassis and slot Configuration

Slot conversion (only for the front

shelf)

Conversion can be achieved byremoving any of seven partitions(i.e. partitions between slots 1-

2, 3- 4, 5- 6, 11-12, 13-14, or 15-16)

Partitions must be removed fromleft to right (i.e. starting at slots1/2 or 9/10)

Rear slots are ALL single height -there is no removable partition


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Bay and line number

Bay 1 = upperbay

Bay 2 = lowerbay


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Slot assignement - Front View

All slots can beconverted in double-heightslots (except15, 16, 31 and 32)


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Slot assignement - Rear view

Rear shelfAll backcards are

single-height

Center cardguides between the

upper and lowerbays in the back ofthe chassis areNOT removable


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Mid-Plane Architecture

P

X

M

4

5

P

X

M

4

5

Front Bay:

Service modules, processor modules,

and service redundancy modules

Rear Bay:

Line modules and backcardsL

M

S

M

B

C

B

C

S

R

M

E

S

R

M

E

B

C

B

C

Mid-PlaneTop View

S

M

S

M

S

M

S

M

S

M

S

M

S

M

S

M

S

M

S

M

S

M

L

M

L

M

L

M

L

M

L

M

L

M

L

M

L

M

L

M

L

M

L

M

Midplane Design increasesflexibility Different

backcards for differentinterfaces

Midplane Design allows frontcard replacement withoutdisrupting cabling

Mid-Plane: Provides connectivity for

front and backcards

Terminates critical signals

Provides -48V power to every

card Sets ID numbers for slots

Has rear DB connectors toprovide access to the systempower supply and fan trayconnections


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Supported cards in MGX8880 (Rel5.2)

Front Card Type Back Card Types

PXM45/C PXM-HDPXM-UI-S3/B

MGX-SRME/B MGX-BNC-3T3-M

(for use with VISM-PR) MGX-STM1-EL-1


MGX-VXSM-155 VXSM-BC-4-155

MGX-VXSM-T3 VXSM-BC-3T3

MGX-VXSM-T1E1 VXSM-BC-24T1E1MGX-VISM-PR-8T1 AX-RJ 48-8T1

AX-R-RJ 48-8T1

MGX-VISM-PR-8E1 AX-SMB-8E1

AX-R-SMB-8E1

AX-RJ 48-8E1

AX-R-RJ 48-8E1


MGX-RPM-XF-512 MGX-XF-UI

MGX-1-GE

MGX-2-GE

MGX-1OC12 POS-IRMGX-2OC12 POS-IR

GLC-LH-SM

GLC-SX-MM

GLC-ZX-SM

MGX-RPM-PR-512 MGX-RJ 45-4E/B

(only with VISM-PR) MGX-RJ 45-FE


AXSM-1-2488/B SMFSR-1-2488/BSMFLR-1-2488/B

SMFXLR-1-2488/B

AXSM-4-622/B SMFIR-2-622/B

SMFLR-2-622/B

AXSM-16-155/B MMF-8-155-MT/B

SMFIR-8-155-LC/BSMFLR-8-155-LC/B

AXSM-16-T3E3/B SMB-8-T3

AXSM-32-T1E1-E MCC-16-E1

RBBN-16-T1E1


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MGX8880 Air Flow


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Cooling System

To reduce the chassis rack unit (RU)height, the 2 fan trays are eliminated

and replaced by a high efficiencysingle fan tray integrated into theexhaust plenum. The intake plenumis also reduced from 3RU to 2RU.

The high efficiency cooling systemconsists of the following 3 items:

1. Intake Plenum for MGX8880 with airfilter provision

2. Exhaust Plenum with integrated FanTray for MGX8880

3. High efficiency 2RU Fan Tray to fitonto the 2RU Exhaust Plenum forMGX8880.

DC PEMs

Air Fil ter

Fans

FAN TRAY + PLENUM

INTAKE PLENUM


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New Low Profile Cooling Fan Tray & Exhaust

Plenum Mech Features Plenum mounts to rack andFan Tray slides into Plenumfor hot swapping

Increased air flowventilation in Plenum

Integrated Plenum and FanTray to shorten overall heightby 1RU

Fan tray can only beinstalled in one direction toensure fan air direction iscorrect

Exhaust Plenum

Fan Tray


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Power supplies

AC or DC power systems

AC Supplyoptional AC power supply tray

The optional AC power supply tray houses up to six AC powersupplies

It is installed directly below the air intake plenum.

The AC power supplies convert 220 VAC to -48 VDC power forthe gateway.


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Power supplies

DC Supply:

accept power from a -48 VDC (-42 to -56 VDC) source

One (primary) or two (secondary/redundant) -48 VDC PEMs.

Each DC PEM must be connected to a dedicated 60 Aregulated source.

DC PEMs are installed in Back of the Air Intake Module


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Power requirements

Configuration depend (number of service modules)

Refer to the following url for exact requirements:http://www.cisco.com/univercd/cc/td/doc/product/wanbu/8850px45/hwdoc/hig/8850_ch3.htm#wp1130617

AC system current requirements

For general planning purposes: 14.4 A at a nominal voltage of200 VAC. At the minimum voltage limit of 180 VAC, the currentdraw is a maximum of 16 A.

DC system current requirements

For general planning purposes: 50 A at nominal -48 VDC; 57.1A at -42 VDC maximum.


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Media Gateway Components Processor/Switch Module

PXM-45/C

TDM Network InterfacesVISM-PR 8x T1/8 E1

SRME/B 3xT3 or 1x OC-3/STM1 [Bulk Distribution for VISM-PR]

VXSM 48x T1/48 E1

VXSM 6x T3

VXSM 4x OC-3/STM1

Packet Network InterfacesIP Interfaces (RPM-PR) - 8x Ethernet, 2x Fast Ethernet, 5x E/FE/GE

IP Interfaces (RPM-XF) - 2x Gigabit Ethernet, 2x POS-OC12

IPoA Interfaces 32x T1/E1, 16x T3/E3, 16x OC3c/STM1, 4x OC12c/STM4, 1x OC-48c/STM16

ATM Interfaces 32x T1/E1, 16x T3/E3, 16x OC3c/STM1, 4x OC12c/STM4, 1x OC-48c/STM16


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Agenda

Applications

System Description1.Chassis Overview2.PXM45/C Overview

3.AXSM Overview

4.VXSM Overview

5.Redundancy Overview

6.Clocking Overview



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PXM45 Functions

MGX 8850

PXM4

5

PXM4

5

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16

17 18 19 20 21 22 25 26 27 28 29 30 31 32

R

eserved

R

eserved

Res

erved

Res

erved

PXM45 Functions

Central Processor

45-Gbps Switch

PNNI Controller

Shelf Manager

Bus Master

Node Timing

SRME Control

Environmental AlarmsFirmware Image Storage

Configuration Storage

Network Management


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PXM45 Capabilities

Combination ATM switching fabric/processor card.

The switching fabric provides 45 Gbps of non-blocking switching capacityThe processor provides software, diagnostics, and performance monitoring.

Bridging between the Cell bus and the serial linescontrolled by traffic flow interface ASIC that will allow OC-12 bidirectional trafficbetween these two switch systems.

The PXM45 is part of a card set that consists of a front card, a user interfaceback card, and a hard drive card.

The switch can support up to two card sets.

Hot-card insertion/removal

1:1 hot-standby redundancy


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PXM Models

3 models of PXM

PXM45/B

PXM45/C only this one fits in MGX8880.

PXM1E


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PXM45/C

PXM UI-S3/BBack Card

45 Gbps non-blocking cross point switch

PXM-45

Front Card

PXM-HDBack Card

Midplane

CellBuses

CellBuses

Serial l ines

R7000 MIPS CPUR7000 MIPS CPU

Shared

memoryswitch

Shared

memoryswitch

xcvrxcvr

CBCCBC

CBCCBC


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PXM45/C Front card

Alarm cutoff button (ACO)4

Ethernet LEDs(ENETA and ENETB)9Power supply LEDs(DC-A and DC-B)3

SYSTEM STATUS LED8Minor alarm LED (MN)2

History LED (HIST)7Major alarm LED (MJ )2

Alarm cutoff LED (ACO)6Critical alarm LED (CR)2

History button (HIST)5

Controller port LED (CNTLR Port)1


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PXM45/C LEDs

The second power supply has failed.Red

The second power supply is operating correctly.GreenDC-B

The first power supply has failed.Red

The first power supply is operating correctly.GreenDC-A

A minor network alarm is active.YellowMN

A major network alarm is active.RedMJ

A critical network alarm is active.BlueCR

The port is inactive.Off

A minor alarm exists on the controller port.Yellow

A major alarm exists on the controller port.Red

The controller port is active.GreenCNTLR PortDescriptionStatusLED


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PXM45/C LEDs

DescriptionStatusLED

The module is active.Blinkinggreen

The module is booting and initializing or the module is inStandby mode.

Blinkingyellow

The module is booting up from boot flash. The PXM45prompt will appear on the screen.

Blinkingred

The module is in Reset mode.RedSYSTEMSTATUS

Traffic is detected on the Ethernet interface.Flashinggreen

ENET, ENETA,and ENETB

There is alarm history on the card.Note Press theHIST button to clear the alarm history.

GreenHIST

An audible alarm is on.Note Press theACO button to turn the audible alarmoff.

YellowACO


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PXM45/C UI-S3/B Back Card

Maintenance Ports

Control (RS232) port

10BaseT LAN ports

(LAN1 and LAN2, but LAN2 not supported)

T1/E1 External Clock Source

Alarm

outputs

T1/E1 External Clock Source


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PXM45/C HD Back Card

ENABLED LED GreenThe back card is active.

OffThe back card is not active.

The Hard disk houses a 6-GB hard diskdrive

It contains all switch and network-relatedinformation


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Agenda Applications

System Description1.Chassis Overview

2.PXM45/C Overview

3.AXSM Overview

4.VXSM Overview


6.Clocking Overview



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What is AXSM ? The AXSM is a double-height broadband or narrowband ATM

switching card that scales from T1/E1 rates to OC-48c/STM-16rates.

The following AXSM models are available:AXSM/A

original card module for MGX 8850-PXM45 gateways

AXSM/B

for MGX 8850-PXM45 and 8880 gatewaysAXSME

enhanced AXSM supporting available bit rate [ABR] virtual source-virtual destination [VS/VD] for MGX 8850-PXM45 and 8880gateways.

AXSM-XGhigh-density OC-3/STM-1 card with enhanced trafficmanagement facilities similar to AXSME. The AXSM-XG is notcurrently supported on the MGX 8880 gateway.

MGX based PXM1E does not support AXSM modules.


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AXSM functions Broadband or narrowband ATM interfaces (ports) for MGX 8800-

series gateways.

User-Network Interface (UNI) or Network-Node Interface (NNI) ATMports, on a per-port basis.

AXSM ports attach to:

other MGX gateways

ATM concentrators

customer end-user equipment such as routers.

In the MGX 8880 application:

AXSM ports that connect to AXSM ports on other gateways for ATMtrunking are usually configured as NNI ports with PNNI signaling.

AXSM ports that connect to outboard routers for transport of IP over ATM

will typically be configured as UNI ports with appropriate UNI signaling.

The AXSM terminates ATM soft permanent virtual circuits (SPVCs),soft permanent virtual paths (SPVPs), and switched virtual circuits(SVCs).


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AXSM: different types for MGX8880 Four different AXSM/B front cards are available:

AXSM/B-16-T3E3 for T3, E3 interfaces

AXSM/B-16-155 for 155-Mbps interfaces (OC-3c and STM-1)AXSM/B-4-622 for 622-Mbps interfaces (OC-12c and STM-4)

AXSM/B-1-2488 for 2488-Mbps interfaces (OC-48c and STM-16)

Four different AXSME front cards are available:AXSME-32-T1E1 for T1, E1 interfaces

AXSME-16-T3E3 for T3, E3 interfacesAXSME-8-155 for 155-Mbps interfaces (OC-3c and STM-1)

AXSME-2-622 for 622-Mbps interfaces (OC-12c and STM-4)


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Feature comparison between AXSM cards

Feature AXSM/A AXSM/B AXSME

Maximum number of

connections 128K 128K 60K or 32K (1)

Throughput

(full duplex) 2488Mbps 2488Mbps 622Mbps

Port density

16 T3/E3

16 OC-

3c/STM-1

4 OC-

12c/STM-4

1 OC-

48c/STM-16

16 T3/E3

16 OC-

3c/STM-1

4 OC-

12c/STM-4

1 OC-

48c/STM-16

32 T1/E1

16 T3/E3

16 OC-3c/STM

1

4 OC-12c/STM

4 (2)

ABR VS/VD support No No Yes

Traffic shaping No No Yes

Detailed connection

statistics support

Only on few

connections

Only on few

connections

Supported on

all

connections

CWM/CV support Yes Yes Yes

8950 support No Yes No

8880 support No Yes YesFeeder support Yes Yes No


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AXSM front and back cards


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AXSME Front Card

AXSM-16-155/B

The AXSM card set is operating in E1 or T1 mode,depending on which LED is green.

Green5 E1 or T1Note OnAXSM-32-T1E1-E only.

The port is not configured.Off

The port is active and a remote alarm has beendetected.

Yellow

The port is active and a local alarm has been detected.Red

The port is active with no alarms detected.Green4 PORT xNote Thenumber of portsvaries with thetype of AXSMinstalled in yoursystem.

A failure has been detected on the AXSM.Red3 FAIL

The AXSM is in Standby mode.Yellow2 STANDBY

The AXSM card set (front card and back card) is inactive state.

Green1 ACT

DescriptionStatusLED

AXSME Back card


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AXSME Back-card

SMFIR-8-155-LC/B


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Agenda Applications


2.PXM45/C Overview

3.AXSM Overview

4.VXSM Overview


6.Clocking Overview



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What is the VXSM ? Cisco Voice Switch Service Module (VXSM)

Next -generation voice module for the MGX8880.

VXSM offers high availabili ty, scalable and robustvoice features for wireless and wire lineapplications.

High density voice service module with TDMinterfaces ranging from T1/E1 to channelized OC-3/STM-1.


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VXSM functions Voice over IPSupport for VoIP to RFC 1889.

Voice over ATMUsing standards-compliant AAL2 adaptation.

PCM voice codingSupport for both pulse code modulation (PCM)G.711 a-law and mu-law.

CompressionG.726-32K and G.729a/b

Built-in echo cancellationProgrammable 16, 32, 64, or 128milliseconds (ms) nearend echo cancellation.

Voice activity detection (VAD) and comfort noise generation usingvariable threshold energy (Cisco proprietary).

Signaling.

Fax/modem detection.

Physical layerLike other MGX service modules, all necessaryphysical-layer functions are performed by the VXSM


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High Density Voice Module (VXSM)

VXSM Front & Back Cards

High Density TDM Interface

Up to 8064 G.711, echo cancelled VoIP calls perservice module

4K for Codecs: G.726, G.729ab

G.711, G.726, G.729ab, T.38, Clear Channel

H.248, MGCP and TGCP signaling

High Availability with Stateful Switchover

Active Call Preservation

Distributed card architecture

Flexible high-performance DSP resources

Dual control processors and hardware voice packetforwarding to eliminate processing bottlenecks

Scaleable Interfaces

OC-3/STM-1 (channelized): Up to 4 Interfaces / Module

T3 (channelized): Up to 6 Interfaces/ModuleT1/E1: Up to 48 Interfaces / Module


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High Density Voice Module (VXSM)

Redundancy with Stateful Switchover

Established calls are maintained during switchover

1:1 redundancy

1:N redundancy

Maximum deployment flexibilityTDM, VoIP and VoATM

H.248 control

TGCP, MGCP support in future release


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Hardware components in VXSM VXSM MB (MGX-VXSM-155, MGX-VXSM-T3 and MGX-VXSM-T1E1)

This is a full Height CardThis card can be installed in any slots from 1- 6 , & 9-14Supports 4 OC3s, 6 T3s or 48 T1/E1s

VXSM DSP Daughter Card (part of VXSM motherboard assembly)This DSP DC plugs in to the VXSM MB. Part of the single assemblyVXSM front cardThis carries the DSP Sub System designed with TIs J anus DSPsDifferent daughter cards for OC3/T3 vs T1/E1 products

VXSM 4OC3/STM-1 Half Height Back Card (VXSM-BC-4-155)This Back Card is designed to bring in 4x OC3 TDM to the VXSM Front Card

VXSM Redundant Back Card (VXSM-R-BC)This back card is specially designed for the support of 1:N Redundancy and 1:1 Redundancy for Slot 3 & 4

This back card will act as the Cross connect for switching all Line Interfaces coming from other BackCardsThis card goes only into Slots 4,20 & 12,28 (if RCON is present)

VXSM 3 T3 Half Height Back Card (VXSM-BC-3T3)This Back Card is designed to bring in 3 T3s (DS3s). Two cards required to terminate 6 T3s.

VXSM 24 T1/E1 Half Height Back Card (VXSM-BC-24T1E1)Designed to bring in 24 T1s or E1s to the VXSM Front Card. Two cards required to terminate 48 T1/E1s.

Redundant Connector (RCON - part of 8880 backplane assembly)This is an additional connector bus which provides switching path for the line Interfaces to have the 1:Nsupport for Front Card Redundancy


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VXSM - photos

VXSM Front card


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The Card Status indicators (ACT, STBY, and

FAIL) function as follows:

ACTIf this indicator is green, the card is on-line.

STBYIf this indicator is yellow, the card is off-

line and in standby mode. If the indicator isblinking, it indicates that the cardfirmware/configuration is being updated.

FAILIf this indicator is red, the card has failed.It has either failed the self-test and/or it is in the

reset mode. If this indicator is blinking, the cardis booting up, and is running its self-testroutines.

VXSM Front card

VXSM-155

Port x LEDs(4)

VXSM Front card


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VXSM Front card

VXSM-155

A Port Status indicator LED is provided for each lineor port on the card.

For the OC3/STM-1 card, there are four port statusLEDS.

The indicators function as follows:

OFFIf the port indicator is off, the port is inactive, and isnot carrying data.

GREENIf the port indicator is green, the port is activelycarrying data.

YELLOWIf the port indicator is yellow, the port is in

remote alarm.REDIf the port indicator is red, the port is in local alarm

4x OC-3 Back Card and the Redundant Back


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Card

4 OC-3 Back Card

Redundant Back Card

Redundancy Bus

Interface connector

Small Form factor

Pluggable transceiver

MMF-1-155-SFP

SMFIR-1-155-SFP

SMFLR-1-155-SFP

ST = Status

SD = Signal Detect

Required for:

1:N redundancy

1:1 redundancy for s lots 3 and 4


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Agenda

Applications


2.PXM45/C Overview

3.AXSM Overview

4.VXSM Overview


6.Clocking Overview


Redundancy Overview


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ySystem Reliability Features

Redundant power supplies and power modules

Redundant cooling fans

Hot swappable card modules

Nonstop graceful hardware and software upgrades

Core module redundancy

Core module stateful switchover

1:1 or 1:N service module redundancy

Redundancy Overview


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Core Module Redundancy

Core modules are PXM and SRM

Core modules operate as one logical card group

MGX-PXM45 in 32-slot chassis:

PXM in slot 7 and SRMs in slots 15,31 form one logical card group

PXM in slot 8 and SRMs in slots 16, 32 form another logical card

group If any card in logical card group fails, entire card group fails, and

standby card group becomes active

Redundancy Overview


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Active and Standby Core Modules

MGX 8880-PXM45/C

PX

M45

PX

M45 S

RME

SRME

SRME

SRME

PXM

PXM

Active Standby

7 8 15 16

31 32

Redundancy Overview


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AXSM Redundancy

AXSM-16-155/b 1:1 redundancy (front and backcards)

MGX 8880-AXSM-16-155

PXM45

AXSM

AXSM

Active Standby

9 10

AX

SM

AX

SM

Front Card redundancy

Redundancy Overview


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AXSM Redundancy

Back Card redundancy

Y-cable used on the physical ports

Primary Card

Secondary Card

Y-Cable

1-to-1 (Y-Cable)

Redundancy

Redundancy OverviewVXSM R d d


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VXSM Redundancy

1:1 Redundant Card Configurations

Standalone Line Configuration Y-cable

Redundant Line Configuration APS

1:1 redundant card/ standalone line

Slot 4 in the MGX 8880 uses redundancy back cards thatconnect the front card in slot 4 to any back cards in slot 3.Because there is only one back card set, no Y-cables arerequired for standalone line installations with 1:1 cardredundancy in slots 3 and 4.

System Behavior on AddingRedundancy


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Redundancy

Configure VXSM 1:1 hot redundancy

A redundancy group consists of 2 VXSM cards

Both cards have to be in active state

Matching front card / back card types

Matching Transceiver Mode

Slot position - 1:1 Redundancy will be supported betweenadjacent slots only. For example, slot 1&2; 3&4; 5&6; 9&10;11&12; 13&14

The 1:1 redundant front card pair in slots 3&4 require

redundant back cards be installed in slot 4/20 and bothtrunk interfaces installed in slot 3/19

System Behavior on Adding Redundancy


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System Behavior on Adding Redundancy

addred PXM CLI command specifies primary / active; andsecondary / standby.

The service on the primary continues; the secondary resets and

boots up to standby. During standby booting up process, allconfiguration and stable calls are synched up from active tostandby (BULK SYNC).

Software and hardware on standby are initialized andprogrammed during booting up

No impact to call processing when adding redundancy.

Changes to configuration using VXSM CLIs will not take effectuntil bulk sync is completed.

After cards becomes active/standby, every single configurationchange or new call will be synced up to standby (INCREMENTALSYNC).

VXSM DSP images much match for redundancyOne redundant card per side so one DSP image per side for 1:N

Redundancy OverviewVXSM Redundancy


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VXSM Redundancy

VXSM-155 1:1 redundancy (front and back cards)

MGX 8880-VXSM-155

PXM45

VXSM

VXSM

Active Standby

21

VX

SM

VX

SM

Front Card redundancy

Redundancy OverviewVXSM 1:1 Redundancy


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VXSM 1:1 Redundancy

Back Card redundancy

Y-cable used on the physical ports

Primary Card

Secondary Card

Y-Cable

1-to-1 (Y-Cable)

Redundancy

What is SONET APS?


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What is SONET APS?

APS Automatic Protection Switching

APS is a standards-based redundancy scheme thatenhances network reliability by protecting against theeffects of line failure.

In its basic form, APS enables a pair of SONET lines to

be configured for line redundancy, where one line isactive and the other is a backup.

Redundancy Overview1:1 and 1+1 APS


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1:1 and 1+1 APS

Redundancy OverviewBidirectional and Unidirectional APS


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Bidirectional and Unidirectional APS

VXSM Redundancy Bus (RCON)


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Card guides forpolarizing different

kinds of back cards

Connector for N+1

redundancy card

The 8880 (and optionally on 8850/B) chassis has an additional connector bus attached to the backplaneto provide 1:N redundancy (future functionality) and APS for the VXSM

RCON only provides APS for up to 8 ports on an AXSM card (4 upper bay and 4 lower bay).

Screws for attaching

to the 8880 midplane

Rear Of Slots 1 To 6,

Upper And Lower BaysRCON product ids , for reference, are:

RCON-1TO5-8850, RCON-1TO3-8850, RCON-1TO3-8830

Redundancy connector


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Redundancy connector

Note that the RCON provides 1:1 redundancy supportfor slot pairs 3 and 4, and slot pairs 19 and 20, inconjunction with the VXSM Redundancy back card.

Service modules such as the RPM-XF, AXSM, orVISM-PR must be inserted into slots that are notcovered by the factory-installed RCON.

Option: could order two more connectors (RCON-1TO5-8850) for the upper left and lower left bays

RCON compatibility with legacy MGX backcards


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Back cards supported:

VXSM 4OC3 BC

VXSM 24 T1/E1VXSM BC-3-T3E3

VXSM-R-BC

VXSM-BC-3T3

RBBN-16T1E1-1N

MCC-16E1-1N

RED-16T1E1

BNC-3-T3E3

SMFxx-4-155/C and SMFxx-4-155/B

SMFxx-8-155 -LCMMF-4-155/C

SMB-4-155

SFP-8-155

SFP-2-155

SMFxx-1-622/C

SMFxx-2-622/B

MGX-2OC12POS

MGX-2GE

MGX-XF-UI/B

Back cards not supported:RJ-48-E3E1

RJ48-8E1

RJ48-8T1

SMB-8E1

SMB-8T1BNC-2T3

BNC-2E3

BNC-3T3

MCC-16E1

SCSI2-2HSSI/BRJ45-FE

RJ45-4E

MGX-1GE

MGX-1OC12-POS-IR

MGX-XF-UI

The following legacy back cards WILL NOT fit into an 8880chassis even when the RCON is NOT fitted (ie: the RCON-ready backplate is installed in rear of chassis):

Any of the above back cards which have the b lack p lastic

block fitted. This is located at the top,rear of the back-card. Itcan easily be removed with cross-headed screwdriver, with

no functional impact.

Agenda


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Agenda

Applications

System Description

1.Chassis Overview2.PXM45/C Overview

3.AXSM Overview

4.VXSM Overview

5.Redundancy Overview6.Clocking Overview


Clocking OverviewMGX Network Synchronization Options


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y p

NCDP

Configured Primary Source

Configured Secondary Source

Network With Manual Clocking Network With NCDP

No Exchange of Clock

Information

Not recommended for use

with MGX voice gateways

Clocking OverviewManual Clock Sources


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BITS source

Generic source

Internal Oscilator

BITSSource

BITSSource PXM45 AXSM

Line

Clock Source

Internal Oscillator

MGX 8850

Generic

SourceVXSM

Line

Clocking OverviewPXM Clock Sources


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AXSMPXM

Clock

Control

Clock

Selector

STM Lines:

Clock Source = Local

1

3

4

External BITS

Sources

InternalOscillator

Generic

Source(s)

Timing Bus

2

Clocking OverviewMGX External Clock Physical Connection


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The PXM-UI-S3 or S3B have two RJ-48 type female connectors

The physical connector pin out is as follows:Pin No. Signal Usage

1 TX Ring2 TX Tip

3 Ground

4 RX Ring Required input for BITS

5 RX Tip Required input for BITS

6 Ground Recommended grounding 7 TTP Ring 8KHz TTL test output V.11 compliant

8 TTP Tip 8KHz TTL test output V.11 compliant

MGX cables for external clock. These are Y cables to support both PXMs.CAB-5686-04 (06) is an RJ48(M) to RJ48(F) Y-cable, suitable for use on PXM-UI, PXM-UI-S3 and

PXM-UI-S3/B cards.CAB-5681-06 is an SMB(M) to BNC(F) Y-cable, suitable for use on the E1 clock input of thePXM-UI only.

A 5 inch cable (MFG# 72-4118-01) has been designed that has proven to work at somecustomer locations. It has not been released with an offic ial Sales part number.

RJ-45/48 socket pin out

Clock

Clocking OverviewExternal Clock Characteristics


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Reference G.703 (11/2001) latest spec as tables have changed

MGX with PXM-UI

T1 bipolar AMI stream or E1 IAW G.703, Tables 7 and 11 of ITU G.703 MGX with PXM-UI-S3 (/B)

T1 bipolar AMI stream or E1 IAW G.703

E1 2Mbps HDB3 (tri-state wave)

Table 7 of ITU G.703 only, no square wave signals (Table 11).

IGX

RS-422A square wave at 1.544 MHz or 2.048 MHz

BPX

T1 bipolar AMI stream or E1 IAW G.703

Table 7 of ITU G.703 only, no square wave signals (Table 11) Subrates will not work on any of these chassis

No way to synchronize clocking between IGX (square wave) / MGX (PCM) nodeswithout a GPS

Clocking OverviewSingle Master Clock Source Example


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AXSM

AXSM

PXM45

AXSM

AXSM

PXM45

AXSM

AXSM

PXM45

AXSM

AXSM

PXM45

BITS

Source A

BITS

Source B

Primary Secondary

Switch 1

Switch 4

Switch 2 Switch 3

Clocking OverviewTwo Master Clock Sources Example


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AXSM

AXSM

PXM45

AXSM

AXSM

PXM45

AXSM

AXSM

PXM45

AXSM

AXSM

PXM45

BITS

Source A

BITSSource B

Primary

SecondarySwitch 1

Switch 4

Switch 2 Switch 3

Agenda


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Applications

System Description


1. MGX 8880 Management Options

2. CLI Access

3. MGX Configuration Commands

4. Redundancy

5. Clocking

MGX 8880 Management Options


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MGX 8880Terminal or

Terminal

Emulator

Cisco WAN

Manager

Station

PC or Workstation

MGX 8880

AXSM

AXSM

Remote PC or

Workstation

LAN ATM

Serial

Media Gateway

Manager Station

NMS Options for MGX 8880


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Depending on the application type, there are currently twooptions:

Cisco WAN Manager (CWM) Release 15.4

Optimized for connection-oriented networks

Multiservice ATM applications

VoATM trunking

Media Gateway Manager (MGM) Release 5.0

Integrated management system for VoIP applications

Media gateway and (future) Softswitch management

VoAAL2 Trunking


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MGX 8880

ATM

Transport

Network

MGX 8880

CO COV V

Cisco WAN Manager (CWM)

VOIP Applications


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MGX VG

IPTransport

Network

MGX VG

CO

MGCP

TGCP

SS7

COV V

Media Gateway Manager (MGM)

Softswitch

(Optional)

Softswitch

(Optional)

MGCP

TGCP

Agenda


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Applications

System Description



2. CLI Access


4. Redundancy

5. Clocking

CLI Access


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This is the CLIThis is the CLICLICLI

This is the CLI

This is the CLIThis is the CLICLICLI

This is the CLI

PXM45-UI-S3

PXM45

AXSM

ConsolePort

ModemPort

LANPort

MGX 8850

MGX 8850

AXSM

AXSM

SVC

Inband IP

CLI Access Access Options


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Console portAn RJ -45 data terminal equipment (DTE) interface on thePXM back card. Initially, the console port is the only method available toaccess the gateway. A dumb terminal or a PC running a VT100 terminalemulation program can be used.

Modem portAn RJ -45 DTE Serial Line Internet Protocol (SLIP) interfaceon the PXM back card. To use the modem port, an IP address must beconfigured and a PC or workstation running a SLIP application must beused.

LAN portOne or two LAN ports allow the gateway to communicate withother devices (such as PCs and workstations) across a LAN. The LANport is an RJ -48 attachment unit interface (AUI) connector for use with anEthernet LAN.

Inband IPYou can set up a router on an ATM User-Network Interface(UNI) portand create switched virtual circuits (SVCs) to the PXMsthroughout the network. Provided that the appropriate routing andaddressing is set up, you can use a Telnet application to communicatewith the remote gateways inband through the MGXnetwork.


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CLI Access - Example


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MGX2. 1. 9. AXSM. a > dspl n - sonet 1. 1

Li neNum: 1. 1Li neSt at e: UpLi neType: sonet St s3cLi neLoopback: NoLoopFr ameScr ambl e: Enabl e

Xmt Cl ock sour ce : l ocal Ti mi ngMedi umType: sonetMedi umTi meEl apsed: 27Medi umVal i dI nt er val s: 0Medi umLi neCodi ng: Ot herMedi umLi neType: Shor t Si ngl eMode

MGX2. 1. 9. AXSM. a >

Agenda


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Applications

System Description



2. CLI Access


4. Redundancy

5. Clocking

CLI Command Prompt


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Command prompt format:

node name.card slot.card type.status

Example:

MGX8880.7.PXM.a

MGX Command Syntax


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8880. 7. PXM. a > command par amet er 1par amet er 2 par amet er 3

8890. 7. PXM. a > command - keywor d1 paramet er1- keyword2 paramet er2

Required Parameter

Required Keyword

Required Parameter

Optional Parameter

Optional KeywordOptional Parameter

Help Command


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ML2- 8830. 1. PXM. a > hel p

Avai l abl e commands- - - - - - - - - - - - - - - - - -?

abor t al l savesabor t of f l i nedi agabor t r evact audi taddaddraddapsl naddcon

addcont r ol l eraddcugaddf draddf l t setaddi magr paddi mal nkaddi maport

addl i nkaddl miaddl nl oopaddl pback

Type t o cont i nue, Q t o st op: q

Card Configuration and DisplayCommands


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dspcdsLists summary status of all cards installed in switch.

dspcdDisplays detailed card information for a card installed in MGXchassis.

ccChanges CLI to another card.

cnfcdsctApplies card-level SCT to AXSM.

cnfcdstatChanges statistics configuration for AXSME.

dspcdstatcnfShows statistics configuration for AXSME.

addredEstablishes a Y-cabled redundant card pair.

delredRemoves redundancy between redundant card pair.

dspredLists redundancy status of cards with redundancy enabled.

switchredcdSwitches between cards in a redundant card pair.

Display Cards Command ExamplePXM45

ML1 PXM45 Syst em Rev 04 00 Sep 03 2003 20 02 45 GMT


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ML1- PXM45 Syst em Rev: 04. 00 Sep. 03, 2003 20: 02: 45 GMTChassi s Ser i al No: SCA05170044 Chassi s Rev: G0 GMT Of f set : 0

Node Al ar m: CRI TI CALCard Fr ont / Back Card Al arm Redundant RedundancySl ot Car d St at e Type St at us Sl ot Type- - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - -

01 Act i ve/ Act i ve AXSM_16OC3 CRI TI CAL NA NO REDUNDANCY02 Empt y - - - - - - - - - - - -03 Act i ve/ Act i ve AXSM_4OC12 NONE NA NO REDUNDANCY04 Empt y - - - - - - - - - - - -05 Act i ve/ Act i ve AXSM- 32- T1E1- E CRI TI CAL NA NO REDUNDANCY06 Empt y - - - - - - - - - - - -07 Empt y Resvd/ Empt y - - - MAJ OR 08 PRI MARY SLOT08 Act i ve/ Act i ve PXM45 MI NOR 07 SECONDARY SLOT

09 Boot / Empt y RPM_XF CRI TI CAL NA NO REDUNDANCY10 Act i ve/ Act i ve AXSM_4OC12 NONE NA NO REDUNDANCY11 Act i ve/ Act i ve FRSM12_12T3E3 NONE NA NO REDUNDANCY12 Empt y - - - - - - - - - - - -13 Act i ve/ Act i ve VI SM_PR_8E1 MAJ OR NA NO REDUNDANCY14 Act i ve/ Empt y FRSM_8T1 NONE NA NO REDUNDANCY15 Empt y - - - - - - - - - - - -. . .16 Empt y - - - - - - - - - - - -

18 Empt y - - - - - - - - - - - -20 Empt y - - - - - - - - - - - -22 Empt y - - - - - - - - - - - -28 Empt y - - - - - - - - - - - -29 Act i ve/ Empt y CESM_8T1 NONE NA NO REDUNDANCY30 Empt y - - - - - - - - - - - -31 Empt y - - - - - - - - - - - -32 Empt y - - - - - - - - - - - -

Agenda


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Applications

System Description



2. CLI Access


4. Redundancy

5. Clocking

RedundancyAdding Redundancy


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OUARGLA_ATM_MGX. 7. PXM. a > addr edEr r : Too f ew argument s.Synt ax: addred

r edPr i mar ySl ot Num - - r edPr i marySl otNum = 1- 6| 9- 14| 17- 22| 25- 30 on MGX- 8850 Shel fr edPr i mar ySl otNum = 1- 6| 11- 16| 17- 22| 27- 32 on MGX- 8950 Shel f

r edSecondar ySl ot Num - - r edSecondarySl otNum = 1- 6| 9- 14| 17- 22| 25- 30 on MGX- 8850 Shel fr edSecondarySl otNum = 1- 6| 11- 16| 17- 22| 27- 32 on MGX- 8950 Shel fThe pr i mary and secondar y sl ot s have t o be on t he same hal f

( Upper / Lower ) of t he shel fr edType - - wher e redType = 1( 1: 1 Y- Cabl e) or 2( 1: N)

OUARGLA_ATM_MGX. 7. PXM. a > addr ed 1 2 1Secondar y sl ot 2 wi l l now r un Pr i mar y Sl ot 1 i mage r evi si onaddr ed: Do you want t o pr oceed ( Yes/ No) ? yes

RedundancyDeleting Redundancy


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OUARGLA_ATM_MGX. 7. PXM. a > del r edEr r : Too f ew argument s.Synt ax: del r ed

r edPr i mar ySl ot Num - - r edPr i marySl otNum = 1- 6| 9- 14| 17- 22| 25- 30 on MGX- 8850 Shel fr edPr i mar ySl otNum = 1- 6| 11- 16| 17- 22| 27- 32 on MGX- 8950 Shel f

OUARGLA_ATM_MGX. 7. PXM. a > del r ed 1

Agenda


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Applications

System Description



2. CLI Access

3. MGX Configuration Commands4. Redundancy

5. Clocking

Clocking

PXM as Clock Source


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Syntax: cnfclksrc

[ -bits { e1|t1 } ]

[ -revertive { enable|disable } ]

pr iori ty -- pr imary|secondary (defaul t=primary)

port id -- [shelf.]slot [:subslot] .port [:subpor t]defaul t=Mandatory Parameter; shel f -- val id value = 0

bits -- bits {e1|t1 (default=null)}revertive -- revertive{enable|disable (default=disable)}

Syntax: cnfclkparms

signal type - [1-2]; 1 - data; 2 - sync;

cable type - [1-2]; 1 - twisted; 2 - coax;

8850japan.7.PXM.a > cnfclksrc primary 7.35 -bits t1 -revertive enable

8850japan.7.PXM.a > cnfclksrc secondary 7.36 -bits t1 -revertive enable8850japan.7.PXM.a > cnfclkparms 1 1

8850japan.7.PXM.a > dspclksrcs

Primary clock type: bits t1

Primary clock source: 7.35

Primary clock status: bad

Primary clock reason: no clock

Secondary clock type: bits t1

Secondary clock source: 7.36

Secondary clock status: bad

Secondary clock reason: no clock

Active clock: internal

source switchover mode: revertive

Deleting a clock source8850j apan. 7. PXM. a > del cl ksrc {pr i mary| secondary}

Dont forget to enter thecnfclkparms command

When configuring a source for E1,the cnfclkparms determines if the

termination is 75or 120 through

the settings for twisted (1 = 120)and coax (2 = 75). There is no

other place to make this selection.

T1 connections must always be setfor twisted.

ClockingAXSM as the clock source


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OUARGLA_ATM_MGX. 7. PXM. a > cnf cl ksr c pr i mar y 9: 1. 1: 1 r ever t i ve enabl e

cnfclksrc

X:1.Y:Y

VXSM

X = slot, Y = 10 + (line # )AXSM

X = slot, Y = line #


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01 Mgx Overview

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