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New Member

splitting ISDN pri with different phone numbers

Hi,

we've the following requirement:

We use a cisco2620 router with nm-1hdv and vwic-1mft-e1 as our gateway to the ISDN network.

Our provider assigned two different numbers to this PRI:

1234 for b-channels 1 to 8

5678 for b-channels 9-31

Incoming calls are no problem, but how do I make the router to use only b-channel 1-8 when there are outgoing calls FROM 1234.

E.g. callmanager sends as calling number 1234 to the gateway. The 2620 gateway should only use b-channels 1-8 in this case.

If the callmanager uses 5678 as calling-number only b-channels 9-31 should be used by the gateway.

Any help is VERY MUCH appreciated!

Alex

4 REPLIES
New Member

Re: splitting ISDN pri with different phone numbers

Alex

I do not believe this is possible.

A PRI is seen as a single interface with 30 channels. It is only addressed as a single port. The only element configurable is to start at channel 1and go up or channel 30 and go down

New Member

Re: splitting ISDN pri with different phone numbers

Hi,

feared about that.

Maybe there is somebody from CISCO around who's knows if this feature is on a roadmap.

Some legacy PBX like Alcatel, SIEMENS do support that feature.

New Member

Re: splitting ISDN pri with different phone numbers

I am using a AS5300, I dont really know if you could use the commands of my OS but in the AS5300 I use the ds0-group command, where I assign a pots dial-peer for origination and another pots for termination. for each pots I assign a group of timeslots. For origination I have 1-5 channels, and the others of my E1 for termination.

I hope this could help, anyway there is a lot of information at the cisco documents. try to search for port configuration for 2620.

New Member

Re: splitting ISDN pri with different phone numbers

Hi,

do you use ISDN?

I thought ds0-channels are only possible without isdn signalling.

Alex

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