13 May
2020
13 May
'20
7:07 p.m.
Hi,
It’s weird that the calls always drop after 32s while the callee is using public ip. Also,
Server forwards ACK to itself with UDP, instead of forwarding to callee with TLS.
Moreover, I cannot see “Received” in AOR as the callee finish the registration.
I recognized it’s marked by nat_uac_test(“19”) and set with fix_nated_register(), the
problem can be resolved.
My scenario is as below, for your reference.
1.Kamailio version is 4.4.7, listening public ip.
2.Caller it’s behind NAT.
3.Clients of Linphone.
Do you know the reason why it happened?
Best Regards,
Rex
13 May
13 May
7:18 p.m.
It's a tell-tale sign of an end-to-end ACK from the caller not being
forwarded properly to the callee. The server should not be forwarding
such an ACK "to itself"; this suggests that its Request URI may be
improperly constructed (it should be equivalent to the remote Contact
URI of the callee in the 200 OK message), or that its Route headers are
somehow incorrect (they should mirror the Record-Route set in the 200
OK).
-- Alex
On Wed, May 13, 2020 at 04:07:16PM +0000, Rex Lin (林昱頡) wrote:
Hi,
It’s weird that the calls always drop after 32s while the callee is using public ip.
Also, Server forwards ACK to itself with UDP, instead of forwarding to callee with TLS.
Moreover, I cannot see “Received” in AOR as the callee finish the registration.
I recognized it’s marked by nat_uac_test(“19”) and set with fix_nated_register(), the
problem can be resolved.
My scenario is as below, for your reference.
1.Kamailio version is 4.4.7, listening public ip.
2.Caller it’s behind NAT.
3.Clients of Linphone.
Do you know the reason why it happened?
Best Regards,
Rex
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Alex Balashov | Principal | Evariste Systems LLC
Tel: +1-706-510-6800 / +1-800-250-5920 (toll-free)
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Rex Lin (林昱頡)