
MaxACD Administrator Manual 243
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PPENDIX
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Network Ports
If MaxACD for Lync is behind a firewall/NAT router, you need to open TCP and UDP ports
according to the following table:
For external VoIP connection through a
firewall TCP UDP
VoIP RTP Port (Voice Stream) for SIP From X to Y (See
note below)
SIP Tie Trunk from another MaxACD server 10060
SIP Trunking Service from carrier 5060
H.245 (Media Capability) 1720
From X to Y (See
note below)
Note: An easy way to find out the RTP/TCP port range(s) for SIP is to look in MaxACD
Administrator View > Current Resource Statistics. All the ports are listed in
the Local Ports column.
Alternatively, you can figure the port range in the following way:
When MaxACD is running on a non-Windows 2008 system,
BasePort = 49152
When MaxACD is running on a Windows 2008 system,
BasePort = 49664 (This is because Windows 2008 has some system services use
p
orts in the 49152 range.)
For a single chassis syste
m:
X = BasePort
Y = BasePort + Total IP codec channels x 2
For a mu
lti-chassis system, you need to enter multiple ranges:
Gateway ID = 0
X0 = BasePort
Y0 = BasePort + Total IP codec channels in GW0 x 2
Gateway ID = 1
X1 = BasePort + 512 x 1
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