Are VoIP Services or SIP Settings available in Airtel Xstream Fiber Broadband?

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21
Location
NA
ISP
BSNL
Hello all wanted to know is there any VOIP settings for AIRTEL xtreme fiber users if so how to access same using SIP settings ..thx
 
For Lucknow the upstream servers are at 10.232.133.130 and 10.232.134.130, and the sip password is the same as mentioned previously. These servers dont accept an expire time less than 3600 seconds. I had to setup a sip 'Options' request every 30 seconds to keep the connection alive.

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Ya, that is the issue. I can call okay for the first time after starting zoiper or any other app. It's a Symmetric NAT issue from what I found searching the web. Restarting the app or waiting for the registration period to expire and register again fixes it. If you call instantly after the first call, there will be one way audio issue. YATE and MicroSIP have implemented methods to overcome this but other apps haven't.
 
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