Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. And see here for current known issues.

New Member

How many PRI's can a 3725 handel

Hi

I have a 3725 router with 1 pri dedicated to voice. I am in the process of getting 2 more pri's for a total of 3 pri's. My question is can my route support them. I know that the router suppots 2 AIM slots which will be used by 2 AIM-VOICE-30's but if I have 3 PRI's that is a total of 69 channels and I only have enough DSP's for 60 Channels. So do I need a new router or will this configuration work.

Thank you

2 REPLIES
Hall of Fame Super Gold

Re: How many PRI's can a 3725 handel

Hi,

yes you are correct, 69 channels won't fit in the 3725 via AIM-VOICE-30. But, if you want to hang on to this router for a little longer, and you have a free NM slot, you could try an NM-HD-xxx (too many variants to list here) that wold support the the additional T1s without need for the AIM, as it has DSP on-board. See what modules are supported on your router:

http://cisco.com/en/US/products/hw/routers/ps259/products_tech_note09186a00800e73f6.shtml

Hope this helps, please rate post if it does!

Silver

Re: How many PRI's can a 3725 handel

Don't use the AIM-VOICE-30 module, use the NM-HDV2-* modules which have the same PVDM2 DSP modules as the ISRs.

I have several c3725 routers running with 2 each of the NM-HDV2-2T/E1 modules (total of 4 T1 ISDN PRI trunks) with 50-60% CPU under full call volume.

I had a bunch of issues with the AIM-VOICE-30 modules as they are a single (older) 5510 DSP and have significant software limitations.

154
Views
0
Helpful
2
Replies
CreatePlease to create content