I need help setting up VOIP behind ISA

  • From: "B Wallace" <bennie@xxxxxxxxxxxxxxxx>
  • To: isalist@xxxxxxxxxxxxx
  • Date: Fri, 24 Jun 2005 12:37:05 -0600

 am trying to set up a VOIP system (bandwidth.com) and get it to work
behind our MS Small Business Server with ISA.

The hardware configuration would be as follows

Internet > T1 line > EdgeMarc 4300T Appliance > MS Small Business Server
with ISA > PC's & Cisco 7960G IP Phones

The system uses the MGCP Protocol.

I'm told for the system to work, I need to open up the following Ports.

Port Type Firewall Ports to Open

UDP 161(SNMP) and 162 (SNMPTRAP)

RTP 1056 to 1255

TCP SSH TCP 22 for remote management & TCP 80 for WAN
configuration-downloads

Telnet 23

FTP TCP 21 for state-full TCP-session control from 4300T to Edgewater FTP
server

MGCP 2427, 2429, 2432, and 2727

NTP 123

SIP 5060 and 5075

Thanks in advance,


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