layercake426 Posted November 27, 2008 Posted November 27, 2008 We are using sip phones in school but having trouble with the isa configuration to allow sip. Does anyone have any answers??
spc-rocket Posted November 27, 2008 Posted November 27, 2008 We are using sip phones in school but having trouble with the isa configuration to allow sip. Does anyone have any answers?? Your're a bit out of luck with 2004 and 2006 because they don't fully support SIP which is a pain. However there are add-on that will do the jobs this is one of them: Collective Software | LCS-Bridge Ash.
Domino Posted November 27, 2008 Posted November 27, 2008 Erm, our ISA 2006 ox allows our SIP trunking to other offices, no worries. What phone hardware/setup are you using?
localzuk Posted November 27, 2008 Posted November 27, 2008 SIP is just another internet protocol, so it should work just fine with port forwarding on port 5060.
spc-rocket Posted November 27, 2008 Posted November 27, 2008 (edited) Erm, our ISA 2006 ox allows our SIP trunking to other offices, no worries. What phone hardware/setup are you using? Which ports did you open for SIP communications or its it a all open rule from source to destination? http://blogs.technet.com/accessdenied/articles/419279.aspx Ash. Edited November 27, 2008 by spc-rocket
localzuk Posted November 27, 2008 Posted November 27, 2008 Asterisk firewall rules - voip-info.org That lists the ports for SIP, IAX and RTP (and MGCP, if you use that).
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