Cisco ATA-186 Administration Guide - Page 90
NatServer
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SIP Parameters Chapter 5 Parameters and Defaults If the outgoing SIP request has a ROUTE header, the first route in the header is removed if it resolves to the same IP address as the out-bound-proxy. This process guards against the case when the out-bound-proxy also inserts its IP address into the RECORD-ROUTE header. The OutBoundProxy parameter can be an IP address with or without a port parameter, such as 123.123.110.45, 123.123.110.45.5060, or 123.123.110.45:5061, or a URL such as sip.cisco.com, sip.ata.cisco.com:5061. For IP addresses, a period (.) or colon (:) can be used to delimit a port parameter. For a URL, a colon (:) must be used to indicate a port. If no port parameter is specified, the port 5060 is assumed. Value Type Alphanumeric string Range Maximum number of characters: 31 Default 0 Voice Configuration Menu Access Code 206 NatServer Description This parameter allows you to specify a server to which a dummy, single-byte UDP packet is sent to maintain a Network Address Translation (NAT) during a session. NatServer can contain up to 47 characters in fully qualified domain name (FQDN) or IP format with an optional port parameter (separated from the address by a colon); for example, xyz.cisco.com:1234. If no port is specified, the default port of 5060 is assumed. Value Type IP address or FQDN format Range Maximum number of characters: 47 Default 5060 is the default port if no port is specified. Voice Configuration Menu Access Code 207 5-18 Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator's Guide (SIP) OL-3410-01