Cisco 2800 card/module

Answered Question
Jun 22nd, 2006
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Hi,


I am planning to connect two Nortel PBXs through my data network to simulate a toll bypass system (Using analog phones). Currently the two PBX are connected by T1 circuit. I will be using 2800 routers on each end.


Which Cisco card/module should I use? Will this solution requires PVDM2?


Thanks


Correct Answer by Aaron Harrison about 11 years 1 month ago

Hi


You'll need a VWIC2-1MFT-T1/E1 on each end (single port E1 or T1 software-switchable card).


You'll also need enough DSPs for 24 channels of voice on each end - if using G711 this would be 24 channels so a PVDM2-32 (or two 16s) would be OK. I'm guessing you'll be using G729 though, so you'll need a PVDM2-48.


You will require a voice capable IOS as well....


I normally start with a voice bundle and add the DSPs/VWICs I need to simplify the order, e.g.:


CISCO2801-V/K9 2801 Voice Bundle,PVDM2-8,SP Serv,64F/256D

VWIC2-1MFT-T1/E1 1-Port 2nd Gen Multiflex Trunk Voice/WAN Int. Card - T1/E1

PVDM2-8U48 PVDM2 8-channel to 48-channel factory upgrade


Regards


Aaron


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Correct Answer
Aaron Harrison Thu, 06/22/2006 - 11:32
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Hi


You'll need a VWIC2-1MFT-T1/E1 on each end (single port E1 or T1 software-switchable card).


You'll also need enough DSPs for 24 channels of voice on each end - if using G711 this would be 24 channels so a PVDM2-32 (or two 16s) would be OK. I'm guessing you'll be using G729 though, so you'll need a PVDM2-48.


You will require a voice capable IOS as well....


I normally start with a voice bundle and add the DSPs/VWICs I need to simplify the order, e.g.:


CISCO2801-V/K9 2801 Voice Bundle,PVDM2-8,SP Serv,64F/256D

VWIC2-1MFT-T1/E1 1-Port 2nd Gen Multiflex Trunk Voice/WAN Int. Card - T1/E1

PVDM2-8U48 PVDM2 8-channel to 48-channel factory upgrade


Regards


Aaron


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Aaron Harrison Thu, 06/22/2006 - 13:12
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That's a possibility - I'd assumed he wanted to lose the T1 and had an existing data WAN to run over...


In the UK we don't tend to use T1s/E1s for data except for dial backup...


Aaron

anthony-pham Thu, 06/22/2006 - 16:13
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Thanks for the reply Aaron. You have been very helpful.


I am fairly new to VoIP and was also wondering is there a particular Network Module(NM-HDV2) that the VWIC card you suggested slots into?


Aaron Harrison Thu, 06/22/2006 - 23:11
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As Tom says - the NM-HDVs were for older platforms that didn't have built in capabilities for voice - the 2800s have slots for direct connection of VICs and VWICs, as well as internal slots for DSP chips...


Aaron


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