User guide

MAXCS ACC 6.7.1 Administration Manual 407
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