We want particular functionality but not sure how to achieve it, either with a backhauled Cisco gateway (2800 series) or a standalone 2800-series gateway.
We have a Cisco 2800 interfacing with a server with an Intel Dialogic card, everything working perfectly. To simplify the scenario, the gateway is currently standalone (using dialpeers for inbound/outbound voice). It is connected to the PSTN via SIP ITSP. Inbound/outbound calls to/from the PSTN to/from the Dialogic card are working fine; there is no problem with that functionality.
We have a 100-block of numbers from the PSTN. We want to segment the 100 numbers such that we can specify a group of channels to use for a particular dialpeer. For example, on a full 30-channel ISDN E1 (I'm Australian, so we use E1 and not T1) I may want 02 9999 8800-8809 to only use channels 20-25 on the ISDN trunk between the 2800 gateway and the Dialogic card.
The only method I'm aware of is specifying ascending/descending order by using "isdn bchan-number-order ascending/descending" from the serial interface of the ISDN PRI, but this is not sufficient and I want more control over B-channels.
I'm able to operate as network side and provide clock for the ISDN PRI connecting to the Dialogic card if required to find a solution.
I'm hoping it's a simple solution and I've simply over-looked something! :-)
Thanks in advance.
There is no way in the IOS gateway to direct specific DNIS out specific channels on a PRI.
Incorrect, it is actually possible:
controller x1 y/y/y
pri-group 0 timeslots 1-30
trunk-group tg1 timeslots 1-5
Then reference trunkgroup instead of port in pots DP. Of course, you can create as many TGs as you need.
This said, I would like to see a reference where dialoging uses specific channel numbers in a PRI configuration, as that is never the case in my understanding.
The way to limit calls in range is using a COR configration matching incoming DP with answer-address.
Note: CAS on E1 does not exist in reality, altough configurable on the router.