LCPL MARTINEZ NEO 1

FXS Voice Gateways and Cisco Unified Call Manager Configuration Guide

3RD Marine Division HQBN Communications Company

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Gateways

1. Client to Server relationship (controlled by Call Manager.)• SCCP• MGCP

2. Pont to Point relationship (own intelligence.)• H.323

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Call Flow 1. Call Manager and Gateway exchange h.323 setup messages (TCP port 1720.)2. Call Manager and Gateway perform h.225 and h.245 feature negotiation.3. RTP streams sent between VoIP and POTS.

CUCM

GW214.44.90.1Gi 0/1MAC: F47F353D6ACD POTS

600

VOIP200

VOIP201

214.10.91.94

FXS 0/3/0

h.323

h.245

h.225

RTP

FXS user dials 200

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Configure SCCP Gateway

SCCP is a centralized controlled gateway registered to a Cisco Unified Call Manager. Call manager Configuration s1. Device> gateways> add new

GW type is the router’s series.Protocol> SCCP

2. Device Name= GiEth 0/1 MACThis is how the CM registers the router. Select Call Manager Group

3. Select slot where FXS card is located> save. Select FXS/DID subunit>save. Configure FXS port.

FSX Port: 0/3/0slot/subunit/port

Save> apply config> restart before you configure fxs port.

Describe Device> Stanadard Analog> Select location> Select Region> Select security profile.

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SCCP CUCM

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F353D6ACD

Default CM group

Your FXS port address is 0/3/XIf Slot/Subunit/FXSport thenSlot=0 and Subunit=3

Router Configuration SCCP GW(config)#sccp local gi 0/1 (config)#sccp ccm 214.10.91.94 identifier 10 versi 7.0+(config)#sccp(config)#sccp ccm-group 1(config)#associate ccm 10 priority 1 (config)#stcapp feature access code (config)#ccm-manager config server 214.10.91.94(config)#ccm-manager sccp local gi 0/1(config)#ccm-manager sccp(config)#no stcapp(config)#stcapp ccm group 1 (config)#voice-port 0/3/0(config-voice-if)#timeouts initial 60(config-voice-if)#timeouts interdigit 60(config-voice-if)#exit (config-dial-peer-if)#dial-peer voice 10 pots (config-dial-peer-if)#service stcapp(config-dial-peer-if)#port 0/3/0(config-dial-peer-if)#exit(config)#stcapp(config)#stcapp register capability 0/3/0 modem-relay 7

Improves STE quality for secure calls

Enables SCCP on CUCM and assigns a tag number. You can add redundant nodes.

Assings priority to CUCM node and redundant nodes.

Registers with CUCM

Any number works (dial peer group identifier)

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Helpful Commands• If the configuration is not successful, try the following commands :

– (config)#no sccp– (config)#no scapp– (config)#sccp– (config)#scapp

The order in which these services are enabled are important.

• Troubleshooting:– #show dial-peer summ– #show dial-peer number– #debug cch 323 h225– #debug cch 323 h245– #debug voip ccapi inout– #debug tcp transaction– #csim start– #show h323 gateway

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Configuring FXS lines

• Select the FXS port on the router.

• Configure like you would any other phone.

• Make sure you select “Standard Analog” for common phone profile.

• Ensure you assign a directory number.

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FINISHED! NEXT IS MGCP

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MGCP Gateway

• FXS lines are controlled through the Call Manager much like the SCCP gateway.

• MGCP and SCCP gateway configurations are similar on the Call Manager end.

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Configure MGCP Gateway given the same topology.

1. Device> gateways> add newGW type is the router’s series.Protocol> MGCP

2. Device Name= hostname/domainEx: 3800router.home.localHostname=3800routerDomain=home.local

3. Select slot where FXS card is located> save. Select FXS/DID subunit>save. Configure FXS port.

FSX Port: 0/3/0slot/subunit/port

Save> apply config> restart before you configure fxs port.

Describe Device> Stanadard Analog> Select location> Select Region> Select security profile.

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MGCP CUCM

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3800router.home.local

Default CM group

Your FXS port address is 0/3/XIf Slot/Subunit/FXSport thenSlot=0 and Subunit=3

IF IP DOMAIN-NAME IS NOT CONFIGURED ON ROUTER, TYPE HOSTNAME ONLY ! i.e. 3800router

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Configuring FXS lines

• Select the FXS port on the router.

• Configure like you would any other phone.

• Make sure you select “Standard Analog” for common phone profile.

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Router configuration MGCP GW(config)#mgcp(config)#mgcp call-agent 214.10.91.94(config)#ccm-manager mgcp(config)#ccm-manager redund 214.10.91.95 (config)#dial-peer voice 20 pots (config-dial-peer)#port 0/3/0(config-dial-peer)#service mgcpapp(config-dial-peer)#exit (config)#ccm-manager config server 214.10.91.94(config)#ccm-manager config

Any number works (dial peer group identifier)

Registers with CUCM

Enables MGCP

Subscriber CUCM

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FINISHED NEXT IS H.323

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Call Legs

#3 #2 #1 #4 #3 #2 #1

#1 Inbound call leg; POTS dial peer pointing to PXS ports. Must be added to receive calls.

#2 Outbound call leg; VOIP dial peer pointing to CUCM and voip phone number pattern.

#3 Voip phone added on CUCM.

#1 Inbound call leg; POTS dial peer pointing to FXS ports. Must be added to receive calls.#2 Outbound call leg; voip dial peer pointing to CUCM or voip phone number pattern. Inbound call leg from routers perspective.

#3 Outbound call leg; bypasses this gateway once inbound dial peer receives original dial peer destined for CUCM.

#3 Voip phone added on CUCM.

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H.323 GATEWAY H323 gateways do not rely on a Call Manager rather they provide they're own intelligence allowing features such as digit manipulation loop-start ring down, detailed dial plans, ect.

Becoming familiar with the legging theory and the protocols that fall under H.323 will be useful when configuring and troubleshooting this gateway.

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H.323 CUCM

Add New> H.323 gatewayDevice name= interface IP addressDevice Pool= externalLocation=phantom

*Gateway registration is always unknown.

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Router Configuration

(config)#dial-peer voice 200 voip(config-dial-peer)#destination-pattern 2..(config-dial-peer)#session target ipv4:214.10.91.94(config-dial-peer)#dial-peer voice 600 pots (config-dial-peer)#destination-pattern 600(config-dial-peer)#port 0/3/0(config-dial-peer)#voice-class h323 50(config)#h225 timeout tcp establish 2(config)#dial-peer voice 200 voip(config-dial-peer)#voice-class h323 50(config-dial-peer)#dtmf-relay h245-alpha (config-dial-peer)#dtmf-relay h245-signal(config-dial-peer)#dtmf-relay rtp(config-dial-peer)#exit

Any number works (dial peer group identifier)

CUCM number block

CUCM

FXS number block

Must match

Sets dial tone tune in to 2sec. (default is 30 sec)