Remote Phones Codec

[Dmitry Golovenkin]

We have recently moved our phone system to our data center as most of our staff work from home. We've then set up a site-to-site VPN to one of our offices on Cisco ASA5505s which works okay but every know and then we get issues with the voice quality.

Is there a way to set so the remote phones use G729 codec rather than G711? 

We are running on CUCM 9.1, if that makes any difference. 

Thank you

[Kirill Glushenkov · Accepted solution]

Hello!

You can try to put remote phones into Device Pool with  Region (System->Region Information->Region), for example Remote_reg, and configure to use g729 between other regions and inside this region.

Regards,

Kirill

[Dmitry Golovenkin]

I've tried that but if I call from outside, it still shows I am using G711. Would this be down to the settings on the CUBE too?
 

show call active voice compact 

 <callID>  A/O FAX T<sec> Codec       type        Peer Address       IP R<ip>:<udp>

Total call-legs: 4

     62569 ANS     T23    g711ulaw    VOIP        P07808XXXXXX   193.203.210.38:16198

     62570 ORG     T23    g711ulaw    VOIP        P441525XXXXXX   192.168.10.252:19030

     62571 ORG     T23    g711ulaw    VOIP        P   192.168.10.252:16656

     62572 ORG     T23    g711ulaw    VOIP        P    192.168.55.12:21360

[Kirill Glushenkov]

You shoukd try to configure codec under dial-peer, or create 'voice class codec' and apply it to dial-peer.

Saying true, full topology should be known to say exactly, what u need.

Regards,

Kirill

[Dmitry Golovenkin]

I have the following:
 

voice class codec 1

 codec preference 1 g729r8

 codec preference 2 g711ulaw

and it's then assigned to every dial-peer.

[Kirill Glushenkov]

Did you try to remove g711ulaw from list?

[Dmitry Golovenkin]

Yup, the call just gets dropped before being connected.

[Kirill Glushenkov]

Do u have hardware transcoder configured?

[Dmitry Golovenkin]

DSP farm, right? 

Dspfarm Profile Configuration

 Profile ID = 3, Service = TRANSCODING, Resource ID = 1  

 Profile Description :  

 Profile Service Mode : Non Secure 

 Profile Admin State : DOWN 

 Profile Operation State : DOWN 

 Application : None   Status : NOT ASSOCIATED 

 Resource Provider : FLEX_DSPRM   Status : NONE 

 Number of Resource Configured : 0 

 Number of Resource Available : 0

 Codec Configuration: num_of_codecs:1 

 Codec : g711ulaw, Maximum Packetization Period : 30

Dspfarm Profile Configuration

 Profile ID = 1, Service = CONFERENCING, Resource ID = 2  

 Profile Description :  

 Profile Service Mode : Non Secure 

 Profile Admin State : UP 

 Profile Operation State : ACTIVE 

 Application : SCCP   Status : ASSOCIATED 

 Resource Provider : FLEX_DSPRM   Status : UP 

 Number of Resource Configured : 8 

 Number of Resource Available : 8

 Maximum conference participants : 8

 Codec Configuration: num_of_codecs:1 

 Codec : g711ulaw, Maximum Packetization Period : 30 , Transcoder: Not Required

Dspfarm Profile Configuration

 Profile ID = 2, Service = MTP, Resource ID = 3  

 Profile Description :  

 Profile Service Mode : Non Secure 

 Profile Admin State : UP 

 Profile Operation State : ACTIVE 

 Application : SCCP   Status : ASSOCIATED 

 Resource Provider : NONE   Status : NONE 

 Number of Resource Configured : 200 

 Number of Resource Available : 200

 Hardware Configured Resources : 0 

 Hardware Available Resources : 0 

 Software Resources : 200

 Codec Configuration: num_of_codecs:1 

 Codec : g711ulaw, Maximum Packetization Period : 30

SLOT DSP VERSION  STATUS CHNL USE   TYPE    RSC_ID BRIDGE_ID PKTS_TXED PKTS_RXED

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

0    1   28.3.8   UP     N/A  FREE  conf    2      -         -         -        

Total number of DSPFARM DSP channel(s) 8

[Kirill Glushenkov]

Please, upload 'show run' from your CUBE and simple topology, because, I can't understand, how call goes through.

Do u have transcoder, configured in CUCM?

Regards,

Kirill

[Dmitry Golovenkin]

Kirill,

Please see attached. 

SIP Provider -> Cisco CUBE 2811 -> CUCM 9.1 -> ASA5505 ->VPN TUNNEL -> ASA5505 -> Cisco IP Phone 8945

Dmitry

[Kirill Glushenkov]

Try to check this one:

https://supportforums.cisco.com/document/108431/dial-peer-codec-selection-cucm-region-settings-and-transcoders-sip-deployment

U need 2 scenario. Put CUBE/SIP-trunk in Reg_1 and Phones in Reg_2, and configure g729 codec between them, Xcoder will be invoked.

check if u configured Transcoder in CUCM properly (it's registered and is mentioned in MRGL's for phones and CUBE/SIP-trunk as 1st one)

Regards,

Kirill

Regards,

Kirill

[Dmitry Golovenkin]

Thank you. I do not have Transcoder set under CUCM. Which one do I pick under Transcoder Type?

Cisco Media Termination Point

Cisco IOS Media

Cisco IOS Enhanced Media

Cisco Media Termination Point (WS-SVC-CMM)

I have the phones in Regio2 set to G729. The rest is in Region 1.

[Kirill Glushenkov]

Cisco IOS Enhanced Media

Please, post show run and scrinshot from region page.

Regards,

Kirill

[Dmitry Golovenkin]

Kirill,

I did choose just the Cisco IOS Media and that worked. Should I change it?

I now get the calls between CUCM and IP Phones in G729. 

Thank you very much,

Dmitry