local call transfer not working on CME10 for 7821

[paule_cathy]

My setup is made of 4 cisco 7821 phones ( phone A, Phone B ,Phone C and Phone D)

when phone B get a call from phone A and transfer call to phone D or C

phone B is able to complete the transfer but phone A get a busy tone.

Problem is only with call transfer conferencing is working

My CME router  is running ios image c2900-universalk9-mz.SPA.153-3.M3.bin.

find attached configuration

What i am doing wrong ?

Can someone please help?

[Suresh Hudda]

You said "find attached configuration", that is missing :-)

Suresh

[paule_cathy]

Sorry. Please find the config file

[Pedro Francezi]

Hello,

You are missing your call-transfer config, i guess:

telephony-service

 transfer-system {blind | full-blind | full-consult | local-consult}

 transfer-pattern transfer-pattern [blind]          !!!... In case consultive transfer is enabled globally, blind transfer can be applied to specific patterns using blind keyword

 call-forward pattern pattern

 timeouts transfer-recall seconds

 calling-number local          !!!... This command will replace the calling-party name/number with the forwarding-party name/number for hairpin forwarded calls.

 transfer-digit-collect {new-call | orig-call}

!

Please, let me know the results

Best Regards 

[paule_cathy]

I think that telephony-service is only for phone running sccp no SIP.

telephony-service
 max-conferences 8 gain -6
 transfer-system full-consult

But still not working

[paule_cathy]

cisco Tac suppoort was able to resolve issue.
 no supplementary-service sip refer  command was missing on my config under voice service voip.

[paule_cathy]

Thank you. I appreciate you help and time