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Bronze

IP Phone does not play busy tone on PBX phone busy

Hi,

I have a H.323 gateway connected to a legacy PBX device via ISDN E1. Calls are working ok but the user epxerience is when the second call goes through to the same PBX extension is not a busy tone but the annoucment stating that the call cannot be complted as dialled and to check the number. The Q931debug does report User Busy so just a bit unsure why CUCM does not pass busy tone to the phone.

Looking at the cause code from the PBX Side I see 0x8191, user busy (CUCM plays annoucement)

Looking at the cause code from the PSTN Side i see 0x8491, user busy (CUCM plays busy tone)

http://www.cisco.com/en/US/partner/tech/tk801/tk379/technologies_tech_note09186a008012e95f.shtml

81 = the private network near the local user (possibly a local private           branch exchange [PBX])

84 = the public network near the remote user (remote telco           switch)

only non default item under the pots dial-peer is:

tone ringback-alert-noPI

Thanks

1 REPLY
Green

IP Phone does not play busy tone on PBX phone busy

Hi,

Can you try adding the following to the global config

!

voice rtp send-recv

voice call convert-discpi-to-prog

!

Regards

Alex

Regards, Alex. Please rate useful posts.
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