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site-to-site and voip - 19.Mar.2007 12:51:55 PM

wolandb

Posts: 1
Joined: 13.Mar.2007
Status: offline

Hi all

I made site to site vnp connection as it was said here.

now, i installed sip server at the "main" office and tried to connect phone from "branch".
Connection was successful by sip, but rtp packets are cutted by "main".

can you suggest anything or say where to read about?

Thank you in advance

Post #: 1

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RE: site-to-site and voip - 20.Mar.2007 6:22:58 PM

tecmicro

Posts: 2
Joined: 20.Mar.2007
Status: offline

Hello. I don't know enough about VoIP or SIP to speak to it 100%, but I can tell you that ISA 2006 seems much more fussy about protocols than previous versions. Check to see if the protocol that this uses, i.e. H.323, has the protocol filter enabled. If it does, uncheck it and see if it works. I don't like lessening the security of my devices, but unfortunately, if your environment is like mine, you still need resources to work.

I thought there was some good SIP info here:

http://www.voip-info.org/wiki-SIP

You may also have to define a custom "protocol" for the ports/transport SIP uses. Have you checked the firewall log to see what the ISA is doing with the connection requests?

(in reply to wolandb)

Post #: 2