Has anyone setup an IP 2004 phone to work THROUGH an ISA Server to connect to a BCM that is outside the ISA server? I need to know what ports to open and forward. I know about 7000 and 28000-28511 but still can get this to work. Is there some sort of "application filter" published anywhere to install on the ISA server for these phones?
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IP Phone through a Microsoft ISA Server
- Thread starter Blotnik
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Hi Blotnik
Signaling between the IP telephones and the Business Communications Manager uses Business Communications Manager port 7000. However, voice packets are exchanged using the default RTP ports 28000 through 28255 at the Business Communications Manager, and ports 51000 through 51200 at the IP telephones. If these ports are blocked by the firewall or NAT, you will experience one-way or no-way speech paths.
Hope this helps
Marshall
Signaling between the IP telephones and the Business Communications Manager uses Business Communications Manager port 7000. However, voice packets are exchanged using the default RTP ports 28000 through 28255 at the Business Communications Manager, and ports 51000 through 51200 at the IP telephones. If these ports are blocked by the firewall or NAT, you will experience one-way or no-way speech paths.
Hope this helps
Marshall
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