How to setup g729 for SPA phones

Answered Question

How can I setup SPA extensions to use g729 CODEC?

I have this problem too.
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Correct Answer by David Hornstein about 6 years 5 months ago

Hi David,

I am answering your question reluctantly as I am trying to figure why to want to run G729 between IP phones.

But here is an example i just manually altered on my UC520 using CLI.

I manually  altered my ephone 6,  which is a SPA504G phone,  only as a example for my UC520.

But, my concern is  if you start to make changes to CLI, i do hope you don't loose the ability for Cisco configuration Assistant (CCA) to  manage your UC540 or UC560.  I do hope you have the skills to make changes and save changes.

As you may or may not appreciate,  the Small Business Support Center (SBSC), who manage UC540 and UC560 cases,  prefer to diagnose issues and make changes to UC540 or UC560 via CCA and not CLI.

Altering values that are normally set by CCA  could be bad if you are a newbee to UC5XX.

Please check the implications of the changes with the most current 'out of band'  configuration guide that can be searched for in this community site.

ephone  6

device-security-mode none

mac-address 0028.B8FF.D514

ephone-template 16

max-calls-per-button 2

username "dan" password xxxxxx

paging-dn 1

codec g729r8 dspfarm-assist

type 504G

button  1:11

UC520#show ephone 504g



ephone-6[5] Mac:0018.B9FF.D514 TCP socket:[8] activeLine:0 whisperLine:0 REGISTERED in SCCP ver 8/8 max_streams=1 SPCP ver 1/1

mediaActive:0 whisper_mediaActive:0 startMedia:0 offhook:0 ringing:0 reset:0 reset_sent:0 paging 0 debug:0 caps:12

IP:10.1.1.20 * 1026 SPA504G  keepalive 18 max_line 4 available_line 4

button 1: cw:1 ccw:(0 0)

  dn 11 number 202 CH1   IDLE         CH2   IDLE

paging-dn 1

Preferred Codec: g729

Lpcor Type: none Username: dan Password: xxxxxx

I made a call to a 7965  and here is the stream statistics screen capture taken from the 7965 IP phone.

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Correct Answer
David Hornstein Fri, 08/13/2010 - 21:23

Hi David,

I am answering your question reluctantly as I am trying to figure why to want to run G729 between IP phones.

But here is an example i just manually altered on my UC520 using CLI.

I manually  altered my ephone 6,  which is a SPA504G phone,  only as a example for my UC520.

But, my concern is  if you start to make changes to CLI, i do hope you don't loose the ability for Cisco configuration Assistant (CCA) to  manage your UC540 or UC560.  I do hope you have the skills to make changes and save changes.

As you may or may not appreciate,  the Small Business Support Center (SBSC), who manage UC540 and UC560 cases,  prefer to diagnose issues and make changes to UC540 or UC560 via CCA and not CLI.

Altering values that are normally set by CCA  could be bad if you are a newbee to UC5XX.

Please check the implications of the changes with the most current 'out of band'  configuration guide that can be searched for in this community site.

ephone  6

device-security-mode none

mac-address 0028.B8FF.D514

ephone-template 16

max-calls-per-button 2

username "dan" password xxxxxx

paging-dn 1

codec g729r8 dspfarm-assist

type 504G

button  1:11

UC520#show ephone 504g



ephone-6[5] Mac:0018.B9FF.D514 TCP socket:[8] activeLine:0 whisperLine:0 REGISTERED in SCCP ver 8/8 max_streams=1 SPCP ver 1/1

mediaActive:0 whisper_mediaActive:0 startMedia:0 offhook:0 ringing:0 reset:0 reset_sent:0 paging 0 debug:0 caps:12

IP:10.1.1.20 * 1026 SPA504G  keepalive 18 max_line 4 available_line 4

button 1: cw:1 ccw:(0 0)

  dn 11 number 202 CH1   IDLE         CH2   IDLE

paging-dn 1

Preferred Codec: g729

Lpcor Type: none Username: dan Password: xxxxxx

I made a call to a 7965  and here is the stream statistics screen capture taken from the 7965 IP phone.