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New Member

Help With Transcoder behavior.

hi,

i´m implementing a transcoder in a cisco 2801 Gateway with IOS Version 12.4(13r)T,
it have 2 DSPs, 32 Voice resources and i configure transcoder with 16 sessions.

all works fine, the transcoder its registered to the ccm (ccm V6.1(2)), but after a 1 or 2 days even maybe a couple of hours the transcoder stop working and the calls gets bussy tone at the moment to hang off the call (codec problem). this mean that somethings happend with transcoder.
but transcoder still registered to the CCM and the only way to fix it, is with "no sccp" and "sccp" commands.

description of implementation:

ccm cluster 1 is in Head Quarter and exist 8 branch, 6 branch talk g711 with HQ, and 2 BR talk G729 with HQ, this CCM cluster 1 have 2 intercluster trunks with 2 other cluster via GK in other locations, the GK is in cluster 2 and cluster 3 is alone in anotherlocation too, Cluster 2 and 3 have only 1 region because is only 1 head quarters.

question: with the "Sh sccp coneccions" commands, something show me g711 to g711 but i inly want to transcode g711 to g729.   =(


plz any idea what happend?

thanks


------------CONFIG TRANSCODER-----------------
sccp local FastEthernet0/0
sccp ccm 172.16.16.2 identifier 1 version 4.1
sccp
!
sccp ccm group 1
associate ccm 1 priority 1
associate profile 1 register HW-XCD
!
dspfarm profile 1 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec gsmfr
maximum sessions 16
associate application SCCP
---------------------------------------------


-------------debug sccp errors---------------

*Jun 29 12:48:44.234: sym_xapp_start_media_transmission: conn_cb not found for sess_id 16852859, conn_id 33646975
*Jun 29 12:48:56.154: sym_xapp_start_media_transmission: conn_cb not found for sess_id 16852860, conn_id 16959219
*Jun 29 12:49:15.566: sym_xapp_start_media_transmission: conn_cb not found for sess_id 16852862, conn_id 16959227

after sccp command:

*Jun 29 14:03:56.858: sym_xapp_process_ccapi_events: minor is ZERO - should be non-zero for CCAPI event
*Jun 29 14:03:57.990: sccp_oper_state_up: Not able to create MP Auto-Config process
*Jun 29 14:03:57.994: sym_xapp_process_ccapi_events: minor is ZERO - should be non-zero for CCAPI event
*Jun 29 14:03:57.994: sym_xapp_xlate_ccapi_eve: Unsupported ccapi eve 2
*Jun 29 14:03:57.994: sym_xapp_process_ccapi_events: Unsupported ccapi eve_id 2^Z

----------------------------------------------------------------------------------------------------------------------------

-----------------Gatekeeper---------------------------------------

gateway  
timer receive-rtp 1200
!        
!        
gatekeeper
zone local CUCM_STGO enami.cl 172.16.x.x
zone local CUCM_COPIAPO domain.cl
zone local CUCM_PAIPOTE domain.cl
zone subnet CUCM_STGO 0.0.0.0/0 enable
zone subnet CUCM_COPIAPO 0.0.0.0/0 enable
zone subnet CUCM_PAIPOTE 0.0.0.0/0 enable
zone prefix CUCM_STGO 1...
zone prefix CUCM_COPIAPO 2...
zone prefix CUCM_PAIPOTE 3...
zone prefix CUCM_COPIAPO 4...
zone prefix CUCM_STGO 5...
zone prefix CUCM_COPIAPO 6...
zone prefix CUCM_COPIAPO 7...
gw-type-prefix * default-technology
no use-proxy CUCM_STGO h323-annexg inbound-to terminal
no shutdown
server registration-port 20000
----------------------------------------------------


-------------------------SH SCCP CONECCIONS-----------------------------

sess_id    conn_id    stype mode     codec   ripaddr         rport sport

16852857   16959163   xcode sendrecv g711u   172.16.5.2      31582 17396
16852857   16959161   xcode sendrecv g711u   192.168.16.242  18956 16582
------------------------------------------------------------------------------------------

Thanks for Your Time =)

10 REPLIES

Re: Help With Transcoder behavior.

try changing your configuration from

"sccp ccm 172.16.16.2 identifier 1 version 4.1" to

"sccp ccm 172.16.16.2 identifier 1 version 6" to match the version of call manager you are running and see if the problem persists.

New Member

Re: Help With Transcoder behavior.

Thanks, but, when i configure the transcoder, only version 4.1 is available, this depends the IOS or something else?

Re: Help With Transcoder behavior.

Yes, you will need to upgrade your IOS to a later version that supports call manager version 6.

New Member

Re: Help With Transcoder behavior.

hi, i upgrade the IOS and configure with version 6, but i still have the same problem

any idea??

thanks

=)

Re: Help With Transcoder behavior.

post your full config.

New Member

Re: Help With Transcoder behavior.

-----------------------------------------------------

Transcoder#sh run
Building configuration...

Current configuration : 1353 bytes
!
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
service password-encryption
!
hostname Transcoder
!
boot-start-marker
boot-end-marker
!
!
no aaa new-model
!
resource policy
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
ip cef
!
!
!
!
ip domain name enami.cl
!
voice-card 0
dsp services dspfarm
!
!
!
username coasin privilege 15 password 7 0307540A15062F1C1E
!           
!        
!        
interface FastEthernet0/0
ip address 172.16.16.19 255.255.255.0
speed 100
full-duplex
h323-gateway voip bind srcaddr 172.16.16.19
!        
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!        
ip classless
ip route 0.0.0.0 0.0.0.0 172.16.16.1
!        
!        
ip http server
no ip http secure-server
!        
!        
!        
!        
control-plane
!        
!        
!        
voice-port 0/0/0
!        
voice-port 0/0/1
!        
voice-port 0/0/2
!        
voice-port 0/0/3
!        
voice-port 0/1/0
!        
voice-port 0/1/1
!        
voice-port 0/1/2
!        
voice-port 0/1/3
!        
     
!        
sccp local FastEthernet0/0
sccp ccm 172.16.16.2 identifier 1 version 6
sccp     
!
sccp ccm group 1
associate ccm 1 priority 1
associate profile 1 register HW-XCD
!
dspfarm profile 1 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec gsmfr
maximum sessions 16
associate application SCCP

Re: Help With Transcoder behavior.

Check out this document.

http://www.cisco.com/en/US/docs/ios/12_3/vvf_c/interop/intcnf2.html#wp1003251

Good info about configuring and testing transcoding.

Also, under your sccp ccm group 1 config try binding your fast ethernet interface. "bind interface FastEthernet0/0"

Is the call manager you are referencing in the command "associate ccm 1 priority 1" the publisher or the subscriber? It would also be wise to enter more than one server in case sccp failed to communicate with one of the servers you are referencing. When doing that you will also want to set your switchover and switchback methods appropriately.

One more thing, issue the command "sccp ip precedence #" I use 3 in my configs. This increases the priority of voice packets over connections controlled by SCCP.

New Member

Re: Help With Transcoder behavior.

thanks again for your help,

i put the command that you recommends me and the config now is:

-------------------------------------------------------------------

sccp local FastEthernet0/0
sccp ccm 172.16.16.3 identifier 2 version 6
sccp ccm 172.16.16.2 identifier 1 version 6
sccp ip precedence 3
sccp
!
sccp ccm group 1
associate ccm 2 priority 2
associate ccm 1 priority 1
associate profile 1 register HW-XCD
!
dspfarm profile 1 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec gsmfr
maximum sessions 16
associate application SCCP

-----------------------------------------------------------------

i can´t bind the interface but the other commands yes.

i look at the behavior and see what happend, thank a lot =)

by the way, 172.16.16.2 is the publisher

and the link is great, thanks.

Re: Help With Transcoder behavior.

If Java or Bill could pipe in on this it would be helpful, but I have always make the primary subscriber as identifier 1 and the publisher as the last option since the subscribers are handling the call processing and the transcoder is registered with the subscriber. Might want to make that change as well unless the others would recommend otherwise. And with other servers configured make sure you configure your failback and switchover methods for them.

This is mine and seems to work fine.

sccp local FastEthernet0/0
sccp ccm 162.57.218.13 identifier 1 version 7.0
sccp ccm 162.57.218.53 identifier 2 version 7.0
sccp ccm 162.57.218.33 identifier 3 version 7.0
sccp ip precedence 3
sccp

sccp ccm group 1
description Transcoding for Corporation
bind interface FastEthernet0/0
associate ccm 1 priority 1
associate ccm 2 priority 2
associate ccm 3 priority 3
associate profile 1 register TRANSCODER_1
switchover method immediate
switchback method immediate
switchback interval 15

dspfarm profile 1 transcode
codec g711ulaw
codec g711alaw
codec g729ar8
codec g729abr8
codec g729r8
codec g729br8
codec gsmamr-nb
codec g722-64
maximum sessions 20
associate application SCCP

New Member

Re: Help With Transcoder behavior.

yeah, thank´s again for the recomendation, i will configure to point the subscriber and then publisher.

thank you for ur help.

=)

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