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We have a customer cutting over service from an old PBX to a CCM system. The circuit from the LD provider is proving to be a bit problematic. From the questions I've been able to get answered, the config of the circuit looks like this:
Line Code: AMI
Number of active channels: 24
Number of 2 way channels: 24
Number of 1 way channels: 0
Number of Channel Groups: 1
Channels included in Channel Group 1: 1-24
Protocol in use: fgd-eana (Feature Group D - EANA)
CO Hunt order: Ascending (clockwise)
I'm not finding any current documentation on setting up Feature Group D that's newer than IOS 12.0 or 12.1.
The customer gateway is a 2811. My questions are:
1. Can the 2811 support this configuration, and if so, where are the docs on configuration with the current IOS trains?
2. Can a gateway so configured be under MGCP control, or is H323 required?
You can run PRI under MGCP control and the T1 CAS trunk under H323 operation with no issues at all.
In terms of the FGD operation and EANA, attached are some notes that give more background and sample configs as well as debug logs.
There is no 'formal' standard for ANI operation on T1 CAS. As mentioned in the notes, you can send it or receive it, but cannot do both on the same interface. Some providers and PBX's use different formats for passing ANI as well (different methods of seperating the digit strings). We do have a basic TCL script that can pick up the ANI if the ANI/DNIS seperators don't correspond to the IOS defaults. This could be supplied on the understanding that it is NOT supported by Cisco.