T1 CAS with E&M FGD and EANA FGD Trunk Configuration Example
In this example, you have been asked to configure an E1 controller for a voice gateway
according to the following network requirements:
■ E1
■ Framing = ESF
■ Line code = B8ZS
■ Time slots 1–31 should use R2 digital signaling
■ The voice gateway must support inbound and outbound DNIS and ANI.
Follow this procedure to configure a T1 CAS digital voice port with inbound and outbound
ANI.
Step 1. Enter controller configuration mode.
Router(config)#controller e1 0/0/0
Step 2. Define DS0 groups.
Router(config-controller)#ds0-group 0 timeslots 1-31 type r2-digital
r2-compelled ani
After the DS0 group has been created, you can tune additional parameters
using the cas custom ds0-id command.
Step 3. Customize E1 R2 signaling parameters.
Router(config-controller)#cas-custom 0
Use the other cas-custom subcommands for further customization required
to accommodate a certain PBX or switch.
Router(config-ctrl-cas)#country china use-defaults
Use this command to specify the local country, regional, and some corporation
settings for R2 signaling. Replace the name variable with one of the supported
country names. The default country setting is ITU.
Chapter 4: Performing Call Signaling over Digital Voice Ports 219
Note Cisco strongly recommends you include the use-defaults option, which enables the
default settings for a specific country.
Step 4. Create a dial peer.
Router(config)#dial-peer voice 90 pots
Router(config-dialpeer)#destination-pattern 9T
Router(config-dialpeer)#port 0/0/0:0
Router(config-dialpeer)#direct-inward-dial
Figure 4-16 and Example 4-6 illustrate the complete configuration that was previously
described.
220 Authorized Self-Study Guide: Cisco Voice over IP (CVOICE)
E1 R2 CAS
Inbound DNIS and ANI
Outbound DNIS and ANI
Shanghai
Router5
V
PSTN
Figure 4-16 E1 R2 Trunk Configuration Topology
Example 4-6 E1 R2 Trunk Configuration
Router5(config)#controller E1 0/0/0
Router5(config-controller)#ds0-group 0 timeslots 1-31 type r2-digital
r2-compelled ani
Router5(config-controller)#cas-custom 0
Router5(config-ctrl-cas)#country china use-defaults
Router5(config)#dial-peer voice 90 pots
Router5(config-dialpeer)#destination-pattern 9T
Router5(config-dialpeer)#direct-inward-dial
Router5(config-dialpeer)#port 0/0/0:0