[cisco-voip] ISR onboard PVDM2 slots and an VWIC-2MFT-T!/E1

[Djerk Geurts]

Thank you all but I'm not quite there...

> From: Ahmed Elnagar [mailto:aelnagar at ACT-EG.COM] 
> 
> I had this issue before but I was using VWIC-2MFT-E1 for 
> voice calls only. with a 3845 router and with the VWIC and 
> with the right DSPs required I was able to run both ports and 
> terminate voice calls from PSTN on it. I donot know what 
> about modem calls.

Modem protocols:
http://www.cisco.com/en/US/partner/products/ps5854/products_data_sheet0900ae
cd8050918e.html

> From: Jim McBurnett [mailto:jim at tgasolutions.com] 
> 
> This won't work...
> Search CCO for the dsp calculator..
> 1 DSP channel min per T-1 B channel..
> More if you use G729 or other codecs...

Apparently modem calls have medium complexity so I would assume this to work
keeping in mind the info from this link:

Max number of shannels through PVDM2s
http://www.cisco.com/en/US/partner/products/hw/modules/ps2617/products_tech_
note09186a008039c316.shtml

> From: cmstaffin at gmail.com [mailto:cmstaffin at gmail.com] On 
> 
> I think your math is off slightly.

Hmm, is my assumption (PSTN termination = modem = medium complexity) wrong?

> The PVDM2-16 can terminate 16 G711 calls.  for voice
> So if you wanted to terminate 60 you would need atleast a 
> PVDM2-64 to do 60 voice calls.

I'm not terminating voice calls data only (hence I wondered whether I was
posting to the wrong list :). ISDN and PSTN where afaik PSTN is modem which
requires codecs.

> I am not sure about the modem but if I remember correctly you 
> needed to buy something for the AIM module that acted as 
> digital modems.

On the 2600XM yes, the ISR's have Codec slots built in.

Djerk