Hello,

My company is doing some * testing with our Class 5 softswitch and had some questions regarding ringback being provided to our PSTN users (off --> on net calling)

Currently with MGCP subscribers, we know the PSTN ringing is provided by a digital PBX for example, However, it looks like with SIP, our softswitch is relying on MGCP signaling on our PSTN gateways to provide ringback to the PSTN network - this makes complete sense (gateway to PSTN gets a S: rg).

The problem is that some of our older gateways don't support MGCP event signaling, so I was trying to get Asterisk to send all SIP calls to our switch with a "183" message so maybe our switch will cut the call through two-way immediately. Currently Asterisk is sending 180/ringing messages to our switch.

Is there a way to have Asterisk send 183 messages to my peer defined in sip.conf ?

Thanks,
Dave




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