Atlas 550 config questions

[matt95gsr]

Hello All,

I'm a brand new user here, and think these forums look great...not sure how I haven't found them before today. I've searched the forums for a little while now, and haven't found excactly all the info I'm hoping for so I thought I'd just ask. What I'd like to do is this: take a PRI that has 2 trunk groups...the first trunk group is to be dedicated "voice only" and consists channels 1-17 which will be used by the PBX. The second trunk group (ch18-23) is to be used for VTC. I have an Atlas 550 which is doing some other things - namely acting as CSU/DSU for several data circuits right now, but I have an empty Quad BRI card and a couple of emtpy T1/PRI ports open. So, I've talked to Adtran about this a bit in the past and as I understand it right now, I can basically make up my own SPIDs to be used for the BRI side of things since the Atlas is acting as the ISDN switch, and if I have a DID pointed to that trunk group, set the Incoming # accept in the interface config for the BRIs to match that DID. That part basically makes sense, but where I'm a bit lost is actually setting the dial plan up at the moment. I understand the Accept/Deny stuff and wildcards, etc, but how can I force the traffic from the 3 BRIs to only use the last 6 channels, and the PRI from the PBX to only use the first 17 out to the network? Seems like it would be easy if I could use dedicated maps for this, but that doesn't seem to be a possiblity when working with the Quad BRI card. Can anyone shed some light on this for me?

[pzielie]

The field that does the trick is Source ID. In the Dial plan set up up 2 network terminations with the DSOs specified. Set the source ID in interface config of the PBX network config to 0 and the VTC network config to 1.

Set up the user terminations with the same source IDs. The Adtran will only route calls within the same source IDs.

As a hint we also route calls tagged as voice to the pbx and calls tagged as data to the VTC so we have the same phone number for voice calls and VTC.

[matt95gsr]

That was my thought, and was originally pretty much what I did, except I used Source IDs of 1 and 2. The thing is, I specify First DS0 of 1 and number of DS0s to 17 for the first Network Term, and then First DS0 of 18 and number of DS0s to 6 for the second Network Term and it gives me "One or more of the DS0s are already in use". I suppose this must griping because it's trying to assign the D-channel to both, but does it not pose any problems? As far as routing voice and data calls independently, would I do that in the User Term Incoming Accept config? Also, I need to make sure I have a bonding module too, right?

[pzielie]

You do not need a bonding module if you are routing the calls through the Altas to a codec with an internal Imux (BRI connections) The bonding will take place within the codecs.

When I tried it on my Atlas I got the same message "One or more of the DS0s are already in use". but it also did not matter.

You specify a terminal as voice or data by enabling or disabling data64, data56, audio or speach in the in#accept. The treat call should be "as received"

[matt95gsr]

Thanks very much, Paul. You're a big help!

I thought that about the bonding module, but the last time I spoke to Adtran tech support about this application, the guy assured me I'd need a bonding module. I'm glad to know my thoughts on that were correct.

[matt95gsr]

Update on my situation here...

So, the telco reconfigured the PRI with two trunk groups (1-17,18-23). I've got my 2 net term entries for the individual trunk groups, got my In Accept #s and Source IDs all set up and such, but the 2nd trunk group is not working. Under DS0 status, 1-17 and 24 all appear normal, but 18-23 show '-' or not allocated, and as expected I can't make a call out on the BRIs. I messed around with it pretty much all morning, and finally called Adtran. I am told that the 550 cannot support multiple trunk groups coming from telco...the only way it could is if the PRI had two separate D-channels, but that still wouldn't work because the 550 can only recognize D-channel on 24. I guess now I'm back to calling the telco and having them recombine to one trunk group and using the data/speech/etc in the In # Accept. That is, unless someone knows of something that Adtran tech support missed....

[dnshbedi]

hii,

what i think with ur prob is that u have pri line terminated to ur epbax system now what u wanna is that can that pri lines last chanels can be used as bri so that u can make isdn call on bri. Yes this can be done and for that u have to do one setting u have to dial the prefix number in front of actual dialing number to make the calling llike u done with bnormal telephone extensions 0 diallings that it.

Tell me if answered ur questions.

rgds,
Dinesh