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Chapter 2      Network Scenarios
Voice Scenario
Voice Network
Figure 2-16 shows a voice network with a Cisco 827-4V router and a Cisco 3640 router as the VoIP 
gateway using H.323 signaling (H.323 gateway). 
Figure 2-16 Voice Network 
The Cisco 3640 router is set up on the LAN as a gatekeeper, which provides address translation and 
control access for the LAN for H.323...

  
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Chapter 2      Network Scenarios
Voice Scenario
Configuration Tasks
To configure the voice scenario, you must configure the data network and then the voice network.
Configure the data network:
–Configuring the class map, route map, and policy map 
–Configuring the Ethernet interface
–Configuring the ATM interface
–Configuring Enhanced IGRP
Configure the voice...

  
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Chapter 2      Network Scenarios
Voice Scenario
Configuring the Ethernet Interface
Follow the steps here to configure the Ethernet interface, beginning in global configuration mode.
Configuring the ATM Interface
Follow the steps here to configure the ATM interface, beginning in global configuration mode.Command Purpose
Step 1interface ethernet 0Enters configuration...

  
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Chapter 2      Network Scenarios
Voice Scenario
Configuring Enhanced IGRP
Follow the steps here to configure Enhanced IGRP, beginning in global configuration mode.
Configuring the POTS Dial Peers
Follow the steps here to configure each POTS dial peer, beginning in global configuration mode.
Configuring VoIP Dial Peers for H.323 Signaling
Follow the steps here to...

  
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Chapter 2      Network Scenarios
Voice Scenario
Cisco 827-4V Router Configuration Example
The following is a configuration example for the Cisco 827-4V router portion of the voice network 
scenario. You do not have to enter the commands marked “default.” These commands appear 
automatically in the file generated when you use the show running-config command.
!
class-map...

  
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Voice Scenario
voice-port 1
local-alerting
!
voice-port 2
local-alerting
!
voice-port 3
local-alerting
!
voice-port 4
local-alerting
!
dial-peer voice 10 voip
destination-pattern .......
ip precedence 5
session target ras
!
dial-peer voice 1 pots
destination-pattern 4085258111
port 1
!
dial-peer voice 2 pots
destination-pattern...

  
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Voice Scenario
voice-port 1/1/1
!
dial-peer voice 10 voip
destination-pattern .......
ip precedence 5
session target ras
!
dial-peer voice 1 pots
destination-pattern 12125253111
port 1/0/0
!
dial-peer voice 2 pots
destination-pattern 12125253222
port 1/0/1
!
dial-peer voice 3 pots
destination-pattern 12125253333
port 1/1/0
!
dial-peer...

  
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Chapter 2      Network Scenarios
Voice Scenario
Cisco 3640 Gatekeeper Configuration Example
The following is a configuration example for the H.323 gatekeeper portion of the voice network scenario. 
You do not have to enter the commands marked “default.” These commands appear automatically in the 
configuration file generated when you use the show running-config...

CHAPTER
  
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3
Basic Router Configuration
This chapter includes basic feature-by-feature configuration procedures. This chapter is useful if you 
have a network in place and you want to add specific basic features.
NoteEvery feature described is not necessarily supported on every router model. Where possible and 
applicable, these feature limitations will be listed.
If you...

  
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Chapter 3      Basic Router Configuration
Before You Configure Your Network
Before You Configure Your Network
Before you configure your network, you must do the following:
Order an ADSL or G.SHDSL line from your telephone service provider.
Determine the number of PVCs your service provider is giving you together with their virtual path 
identifiers (VPIs) and virtual...