[cisco-voip] Question: Splitting T1 with PRI service (moot)

[Tony Kava]

Sorry for replying to myself, but this looks like a moot point.  Our phone
company definitely can't make two PRI groups across a single T1.  I thought
this question might be a little absurd, but I was hoping for an answer as to
whether this is even feasible.

Thanks.

--
Tony Kava
Senior Network Administrator
Pottawattamie County, Iowa


> -----Original Message-----
> From: Tony Kava [mailto:ciscovoip at pottcounty.com] 
> Sent: Wednesday, February 09, 2005 12:37
> To: 'cisco-voip at puck.nether.net'
> Subject: [cisco-voip] Question: Splitting T1 with PRI service
> 
> Greetings:
> 
> I have a Cisco 3825 with a VWIC-2MFT-T1 (2-Port RJ-48 
> Multiflex Trunk - T1)
> with two voice T1 connections (one is PRI).  I also have a 
> NM-6DM digital
> modem module, and I plan to add another MICA-6MOD to expand 
> to 12 modems
> total.  After a previous post it was made clear to me that in 
> order to use
> the digital modems on this platform I would need to use a 
> NM-1CT1 network
> module for the modem T1.  Had I read cisco.com closer I would 
> have noticed
> this.
> 
> I need 12 B channels for our modem calls, but after checking 
> with our phone
> company I was informed that a fractional T1 from them is actually more
> expensive than a full T1.  So we'll go with a full T1, and 
> this is the basis
> of my question.
> 
> Is it possible for me to split the timeslots on the T1 into 
> two pri-groups
> (1-13, 14-24 for example) and set Serialx/x/x:12 with 'isdn 
> incoming-voice
> modem' and Serialx/x/x:23 with 'isdn incoming-voice voice' so 
> that I can use
> the rest of the T1 for voice calls?
> 
> I just want to know if I'm way off base here, or if this is 
> common practice.
> This group was very helpful and surprisingly quick to respond 
> after my last
> post.
> 
> Thanks.