02-12-2006 07:22 AM - edited 03-17-2019 08:37 PM
I am trying to make an IPIPGW accessible through a PIX 6.3(5) firewall. The H.323 ras and H225 fixups are enabled, but connections to the IPIPGW are not established; the firewall generates an error "call proceeding before setup". The workaround appears to be to disable both fixups and open >1024 ports, which is less than ideal. What generates the "call proceeding before setup" and can it be worked around on the IPIPGW; I've tried both slow- and fast-start connections.
02-14-2006 12:14 AM
Hi,
this is really an odd issue. The Q.931 sequence of call setup is:
A SETUP --> B
(optionally B can reply with "SETUP->ACK", or if it is an overlapped number, but this does not count for H.323)
B CALL PROCEEDING / PROGRESS / ALERT --> A
B CONNECT --> A
It is very basic, but in general that is the procedure. Cisco says that a SETUP message has arrived after the CALL PROCEEDING one, which is incorrect. An H.323 (H225) debug would bring some light to the issue.
We have a network of Cisco voice gateways, Call managers, thirf party gatekeepers and gateways, calling each other through a Cisco 6.4 PIX and it works (however we had some nasty troubles with path mtu discovery).
11-16-2006 05:56 PM
I get the same problem using Polycom Gear. Did it ever get resolved ? Did 7.x Pix code solve anything?
I have a PIX 501 here at home and cannot get h.323 through it period.
12-09-2006 07:48 PM
Do a no fixup on h323 and ras..I missed that you've already don that.. Sorry.. :)
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide