You would need to provide more information. Mobiles and landlines are
not SIP and yet you say calls are coming into your asterisk over SIP. So
what or who is doing the translation?
Initial thoughts are that it could be you are sending back SIP/180 with
no session progress and indicating ringing but the other end is
misconfiguration and not generating its own ring tone. This is possible
if you have multiple providers sending you calls or one provider using
different kit for different geographic areas.
On 13/05/14 12:01, D'Arcy J.M. Cain wrote:
I have an issue with ringing. Some users who call my switch hear
ringing and others don't. I have researched this and understand the
issue of firewalling and RTP. My switch has UDP ports 10000 to 20000
open. In any case I think that blocked RTP would block all ringing,
not just some.
I have one origination provider. As far as I can tell the issue is
related to the remote user's provider. My sister does not hear ringing
when she calls from her Roger's cell phone but she does from her Vonage
phone. I hear ringing when calling in from my Koodo cell phone. Some
land lines work and others do not.
The server is not behind a NAT and neither is the origination
provider. There is a firewall but port 5060 is open (UDP and, just in
case, TCP) as well as the RTP ports mentioned above.
I am not sure where to look next. I assume that there is some sort of
signaling that I am not doing but I can't figure out where. Can anyone
suggest what area I should be looking?
Thanks.
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