[cisco-voip] Call Manager and Pots Lines

[Nick Griffin]

A good place to start for AVVID, and Cisco IP Telepony are the SRND's for voice available at the link below:

www.cisco.com/go/srnd


But in response to your question, FXS are station ports typically used to connect Fax machines or analog devices, this will not allow for connectivity to an analog CO trunk. Typical scenarios usually involve a gateways with some sort of T1 connecitivity via T1-CAS, or PRI with a Cisco MFT-T1 card in a NM-HDV voice model for dsp resources, although the new ISR routers have dsp resource on the motherboard that can be shared, and do not require a High Density Voice Module. In this scenario a lot of times you'll see backup analog lines to maintain connectivity in the event of the T1 failure to provide local calling, or 911 services. This type of connectivity is provided via the FXO ports in your voice gateway. Of course depending on the size of the deployment, a lot of times companies cannot justify T1's, and may require a large amount of analog lines. In this scenario the new EVM Voice Module available for the ISR's is your best option, this supports FXS/FXO and DID support, as well as BRI. 

Hope this helps

Nick Griffin


-----Original Message-----
From: cisco-voip-bounces at puck.nether.net on behalf of Phillips, Danny
Sent: Wed 7/13/2005 9:49 AM
To: cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Call Manager and Pots Lines
 
I don't have anything now on place now this is a project I am getting
ready to start. I do have a 2611XM w 2/FXS ports on it. Is this
sufficient or should I shoot for something else? I am running
CallManager 4.0.2(a)

 

 

Danny 

 

________________________________

From: VoIP Forum [mailto:voipforum at apptis.com] 
Sent: Wednesday, July 13, 2005 10:28 AM
To: Phillips, Danny; cisco-voip at puck.nether.net
Subject: RE: [cisco-voip] Call Manager and Pots Lines

 

What type of Router and modules are connecting the POTS lines to the IP
network?

What version of CallManager are you using?

 

 

________________________________

From: cisco-voip-bounces at puck.nether.net
[mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Phillips, Danny
Sent: Wednesday, July 13, 2005 10:07 AM
To: cisco-voip at puck.nether.net
Subject: [cisco-voip] Call Manager and Pots Lines

 

Can anyone give me any advice or links on how to make Call Manager work
on a pots line incase of a router failure?

 

 

 

Danny


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