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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
OL-3410-01
Chapter 5 Parameters and Defaults
SIP Parameters
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