
MAXCS ACM 6.5 Administration Manual 473
Remote IP Phones Behind NAT
For remote IP phones behind NAT, you don’t need to do any configuration. However, if
the remote firewall/NAT router blocks outgoing traffic, then you will need to open the
following ports on the remote firewall/NAT router:
• UDP 10060
• UDP 30,000~31,000
• TCP 10064
MAXCS connects the following application
through a firewall
TCP UDP
External CDR Logger Service 10027
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