cancel
Showing results for 
Search instead for 
Did you mean: 
cancel
741
Views
10
Helpful
3
Replies

Does g711ulaw uses only 160 bytes?

Hi,

When I run "#show sip-ua calls" command, it shows 

"Negotiated Codec : g711ulaw (160 bytes)",   

as mentioned here http://www.cisco.com/en/US/docs/ios/12_3t/voice/command/reference/vrht_s08_ps5207_TSD_Products_Command_Reference_Chapter.html#wp1370370

 

But when I checked it in wikipedia for g711ulaw it is 64 Kbps (wiki : G.711 is a narrowband audio codec that provides toll-quality audio at 64 kbit/s.). 160 bytes is nowhere related to 64 Kb.

What is the actual bandwidth used in this case for this call?

 

-Pandi

1 Accepted Solution

Accepted Solutions
3 Replies 3

David Hailey
VIP Alumni
VIP Alumni

The bit rate is 64Kbps, the voice payload is 160 Bytes.

 

See http://www.cisco.com/c/en/us/support/docs/voice/voice-quality/7934-bwidth-consume.html

 

Hailey

Thanks David, this helps me a lot.

So according to the link you have given, for one call it uses 11.2 kbps right?

That depends on L2 and L3 headers

http://www.cisco.com/c/en/us/support/docs/voice/voice-quality/7934-bwidth-consume.html

HTH

java

if this helps, please rate
Getting Started

Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: