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SIP trunk external transfer

SIP trunk external transfer

SIP trunk external transfer


My SIP trunk works fine for all incoming and outgoing calls until a call is transferred externally.
When this happens there is no speech path. The phone rings but silence both ways.

I thought it might be something to do with payload not being set to 101 but this is set fine.

Any thoughts would be most appreciated!

RE: SIP trunk external transfer

Have you enabled "keepalives" under System>>LanX>>VoIP?
if yes, check "lan topology" tab.

RE: SIP trunk external transfer

What devices are there between IPO and SIP provider?

Gateways, Microtic, firewalls?

RE: SIP trunk external transfer

as icet500 said, i just had this happen with Flowroute. Once I enable Keep-alives on the VoIP tab its worked ever since.

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