Figure 8-1 Comparing PSTN and VoIP voice call setup
-
Upload
alexa-brooks -
Category
Documents
-
view
23 -
download
2
description
Transcript of Figure 8-1 Comparing PSTN and VoIP voice call setup
![Page 1: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/1.jpg)
Figure 8-1 Comparing PSTN and VoIP voice call setup
Circuit-switched Network Media Gateway
Media exchangeMedia control
IP Network
Call signalingCall signaling/Media
control
Media exchange
![Page 2: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/2.jpg)
Figure 8-2 Relationship Between Signaling and Media Flow
IP Phone – Calling party
IP
Media Gateway
IP Phone – Called party
Call setup Signaling
Media Flow
8001 8002
![Page 3: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/3.jpg)
Figure 8-3 Components of a Multimedia Communication Service
H.323 Terminal
H.323 MCU
H.323 Gatekeeper
H.323 Gateway
H.323 Gateway
H.323 Terminal
IP Network
PSTN ISDN
![Page 4: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/4.jpg)
Figure 8-4 Gatekeeper
IP Phones
IP
Media Gateway
Router
IP
IP WAN
Gatekeeper
IP Phones
MCU
Router
Media Gateway
![Page 5: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/5.jpg)
Figure 8-5 H.323 Zones
IP Phones
IP
Media Gateway
Router
IP
IP WAN
Gatekeeper
IP Phones
MCU
Router
![Page 6: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/6.jpg)
Figure 8-6 Interdomain routing
AS 300
AS 200AS 100
BGP protocol running here connecting the three AS (Autonomous Systems) together
![Page 7: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/7.jpg)
Figure 8-7 Signaling separate from VoIP conversation
Real time Transport Protocol VoIP Conversation
UDP
UDPUDP
Call setup signaling
1. Off hook
2. Send Dial tone
3. Dial number
6 Receive IP
4. is phone on hook? Yes
5 .Give caller ip address
7. set up UDP port
8. Ring signal
Called partyCalling party
Signaling uses TCP/IP
Conversation uses UDP
Media Gateway
![Page 8: Figure 8-1 Comparing PSTN and VoIP voice call setup](https://reader035.fdocuments.us/reader035/viewer/2022072013/56812a46550346895d8d81f4/html5/thumbnails/8.jpg)
Chapter 8 Figures
[FIG]Figure 8-1 Comparing PSTN and VoIP voice call setup[FIG]Figure 8-2 Relationship between signaling and media flow[FIG]Figure 8-3 Components of a multimedia communication service[FIG]Figure 8-4 Gatekeeper[FIG]Figure 8-5 H.323 Zones[FIG]Figure 8-6 Interdomain routing[FIG]Figure 8-7 Signaling separate from VoIP converstion