06-23-2008 04:43 PM - edited 03-11-2019 06:03 AM
I Have a PABX Siemens in my inside network, and I need access this PABX with the SIP Protocol, but it does not work. I'm redirect all ip traffic from the ip xxx.xxx.xxx.149 to PABX IP, and setup all ACL's to permit.
My firewall is a CISCO asa 5510, ASA version 8.0(3).
anybody can help me?
06-24-2008 02:03 AM
Are you enabling SIP inspection?
Have a look at this link:
Regards
Farrukh
06-25-2008 06:02 AM
Yes... the "Sip Inspection" is already enabled.
06-25-2008 07:11 AM
Which Siemens model/series is this exactly?
Regards
Farrukh
06-26-2008 06:32 AM
Siemens HiPath 3000...
06-26-2008 08:48 AM
Have you tried to permit all IP traffic from one IP phones IP address to the back (and vice versa)? To see what ports are utilized.
Regards
Farrukh
06-26-2008 08:50 AM
yes... all traffic from the ip phone to PABX and vice versa already allowed...
06-26-2008 09:07 AM
So it should work then? You permitted all IP traffic, howcome it won't work!
Have you tried toggling the sip inspection on/off?
Regards
Farrukh
06-26-2008 10:33 AM
Yes... a already tried toggling the sip inspection on/off, but don't work. The IP phone success register on SIP server, but on the calling is muted on two points...
06-30-2008 03:20 AM
Dear can u increase the timeout of sip and sip media.
Regards,
07-01-2008 06:37 AM
how to make this?
07-06-2008 03:38 AM
Check out the following command:
http://www.cisco.com/en/US/docs/security/asa/asa72/command/reference/t_72.html#wp1387086
Regards
Farrukh
07-07-2008 03:00 AM
You'll find here a very good document for configuring Voice over ASA
http://cisco.com/en/US/customer/products/ps6120/products_configuration_example09186a008081042c.shtml
Probably what happens is that even if you have SIP inspection, the NAT will not translate IP in the embedded data in the SIP packets.
You probably need to enable STUN service on the SIP PBX. STUN is used to detect NAT and will ensure correct IP information is sent in the SIP payload.
Please rate if this helped.
Regard,
Daniel
07-21-2008 03:55 AM
I'm solved this problem changing the version of ASA software, from 8.0(2) to 7.2.4. After changed this software version, the SIP communication has be worked successful.
07-21-2008 06:03 AM
Ok great, Thanks for the update.
Regards
Farrukh
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