Business Phone Systems

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Joined: Mar 2010
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robtech Offline OP
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Calls are being dropped after 5 minutes. The provider is sending a mid call ack alive request. They never see our ack alive back. Anyone run into this? Maybe the router/firewall is closing the port after the call is up for a certain time?


Robert
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2 thing to try:

Port forward the sip port to the MP card.

Or you can turn on alive notify to send an options message every x seconds (anything less then 5 minutes should work, i usually do 30 or 60 seconds) this keeps a connection alive in the router/firewall NAT table


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I had this issue with another carrier last week and had to turn on PRACK support in the SIP carrier options and it cleared it up.


Moderated by  nameless, pvj 

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