Outbound proxy
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Configuration Files

A - 13

Outbound Proxy
This configuration attribute is defined as follows:

Attribute

Permitted
Values

Default

Interpretation

voIpProt.SIP.outboundProxy.address

dotted-deci
mal IP
address or
host name

Null

IP address or host name and port of a SIP
server to which the phone shall send all
requests.

voIpProt.SIP.outboundProxy.port

1 to 65535

5060

voIpProt.SIP.outboundProxy.transpor
t

DNSnaptr or
TCPpreferre
d or
UDPOnly or
TLS or
TCPOnly

DNSnapt
r

If set to Null or DNSnaptr:
If voIpProt.SIP.outboundProxy.address is a
hostname and
voIpProt.SIP.outboundProxy.port

is 0 or

Null, do NAPTR then SRV look-ups to try to
discover the transport, ports and servers, as
per RFC 3263. If
voIpProt.SIP.outboundProxy.address

an IP address, or a port is given, then UDP is
used.

If set to TCPpreferred:
TCP is the preferred transport, UDP is used if
TCP fails.

If set to UDPOnly:
Only UDP will be used.

If set to TLS:
If TLS fails, transport fails. Leave port field
empty (will default to 5061) or set to 5061.

If set to TCPOnly:
Only TCP will be used.

NOTE: TLS is not supported on SoundPoint
IP 300 and 500 phones.

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