SX10 Problem to receive calls

[Claudio Andres A. Arriagada]

Hi All

We´ve installed a SX10 (stand alone - w/o CUCM or VCS) and we did the basic configurations.

SIP Parameters

ANAT = off

DefaultTransport = Auto

Line = Shared

Listen port is = ON

Proxy 1 to 4 Address: emptyTlsVerify = Off
Type = Standard
URI - company@publicIPaddress.

Topology: SX10---Catalyst 2690X - ASA5506X - Internet

In a Lap Top, we´ve installed the Linphone application (http://www.linphone.org/)  to make a test calls

All the calls from SX10 to the Linphone are stablished, but all the calls from linphone to SX10, didn´t work.

In this case, the SX10 ring, I accepeted the call, in the Linphone the call is aborted imeditelly, and at the SX10 cut the call after few (about 30) seconds.

Software version: ce 8.1.0 Final b8c0ca3 2016-04-05

Installed options: Encryption

someone already had this problem?

regards

Claudio Arriagada

[Dennis Mink]

can you include some logs re. SIP signalling, on yout Sx 20  got to diagnostics>log files, the eventlog/all.log contains the SIP messages. on your linphone, run wireshark and capture sip messages.  the issue is most likely caused by a capabilities mismatch, or an RTP port forward/translation from external to internal not working.  

[Claudio Andres A. Arriagada]

Dennis,

see attached the files that you requested.

just to clarify, is a SX10 and not SX20, as you mentioned

thank you for your attention

regards

Claudio Arriagada

[Wayne DeNardi]

If your outbound calls are working, but your inbound calls are failing, then this is likely a firewall issue.  Make sure that you have opened up all the required firewall ports from the Internet to your endpoint.

Wayne
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[Claudio Andres A. Arriagada]

Wayne,

could you give me some tips about the firewall ports to be opened?

regards

claudio

[Wayne DeNardi]

https://supportforums.cisco.com/discussion/11606926/sx20-standalone is a good thread which tells you how to configure a standalone SX/EX/MX/Cseries endpoint and the firewall ports required.

Wayne
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[Patrick Sparkman]

CE8.2 introduced H323 support for the SX10, in addition to the other suggestions, it might help using H323 with NAT.  For firewall ports, refer to post mentioned by Wayne as well as the document Cisco (ex-TANDBERG) IP & SIP Firewall Ports.