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Not hearing a Ringback Tone when calling in over SIP to Avaya IP500

Posted on 2014-01-06
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Last Modified: 2014-01-20
The title says it all, but I will try and expand although my knowledge of Voip is beginner at best.  

PBX is an Avaya IP500 with v9 software.  The Internet Telephony Provider is also the Internet Provider and the internet itself is a fibre leased line.  The connection to SIP is direct through the ethernet demarcation device which handles QoS.  There is no firewall or NATing.  I am porting a 200 DDI block of numbers from ISDN to SIP.  I have some sample numbers from the ISP to get the system up and running and tested before the porting date.  A few hiccups and learning curves later, I have calls working inbound and outbound with audio both ways at very high quality.  The last piece I need to get working is the Ringback Tone.  This is the tone the outside caller should hear before the phone is answered.  Currently there is silence. Help.

Is this a PBX or ISP configuration problem?  If it is ISP what should I instruct them to do to in order to get the tone?

Thanks
ST

If I have missed out some information, please ask me. Thank you in advance for your answers.
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Question by:space_time
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Expert Comment

by:amitnepal
ID: 39759510
It must be your PBX configuration issue. Look for a setting called "Progress Tone" or "RingBack" or there may be a check box on sip settings for "Progress" . The ring back is called the Progress Tone .
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Author Comment

by:space_time
ID: 39759593
I cant find anything in the configuration system that referes to Progress Tone.
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Accepted Solution

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space_time earned 0 total points
ID: 39782285
Solved.  The ITSP were looking for a 183 response from the PBX and not a 180. Without going in to the ins and outs of SIP, this is how you do it on an IP500:

1.  Find the user: NoUser
2.  Enter a new Source Number
3.  Insert this line:  SIP_PROGRESS[=0]
4.  Save and merge.

The phone will now ring.
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Author Closing Comment

by:space_time
ID: 39793737
The solution described worked for me.  Posting here incase it could help someone else.
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