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G729r8 to G711

koralul2000
Level 1
Level 1

Hello,

Is it possible to transcode 3 simultaneous calls from G729r8 to G711 without any DSP modules. I have Cisco 2811 , IOS 12.4(13r)T11, 2 x VWIC2-1MFT-T1/E1 cards. In other words how many calls can I transcode between this 2 codecs with Cisco 2811 internal resources?

Thank you.

4 Replies 4

Roman Rodichev
Level 7
Level 7

no transcoding without DSPs

Ayodeji Okanlawon
VIP Alumni
VIP Alumni

Roman,

You need DSP for transcoding...

To know how many DSP you need you can use the cisco dsp calculator here..

http://www.cisco.com/cgi-bin/Support/DSP/cisco_prodsel.pl

Note: you need CCO login.

For the updated dsp calculator with PVDM3 , you can also access it here: http://www.cisco.com/go/tools --> Just look for DSP calculator

Please rate all useful posts

Also, you need PVDMs to enable those 2 VWICs assuming you're going to use them.

HTH

java

if this helps, please rate

www.cisco.com/go/pdihelpdesk

HTH

java

if this helps, please rate

unless he uses them for channel-groups and runs voip over data