Network Address Translation <Nat - Polycom SoundPoint IP 601 Administrator's Manual

Administrator Guide - SoundPoint IP / SoundStation
4.6.2.5.1 Message Waiting Indicator
In the following table, x is the registration number. IP 300 and 301: x=1-2; IP 500 and
501: x=1-3; IP 600: x=1-6; IP 601: x=1-12; IP 4000: x=1.
Attribute
msg.mwi.x.sub-
scribe
msg.mwi.x.call-
BackMode
msg.mwi.x.callBack
4.6.2.6 Network Address Translation <nat/>
These parameters define port and IP address changes used in NAT traversal. The port
changes will change the port used by the phone, while the IP entry simply changes the
IP advertised in the SIP signaling. This allows the use of simple NAT devices that can
redirect traffic, but do not allow for port mapping. For example, port 5432 on the
NAT device can be sent to port 5432 on an internal device, but not port 1234.
Attribute
nat.ip
138
®
IP
Permitted Values
ASCII encoded string con-
taining digits (the user part
of a SIP URL) or a string
that constitutes a valid SIP
URL (6416 or 6416@poly-
com.com)
contact or
registration or
disabled
ASCII encoded string con-
taining digits (the user part
of a SIP URL) or a string
that constitutes a valid SIP
URL (6416 or 6416@poly-
com.com)
Permitted
Values Default
dotted-deci- Null
mal IP
address
Copyright © 2005 Polycom, Inc.
<mwi/>
Default Interpretation
Null If non-Null, the phone will
send a SUBSCRIBE
request to this contact after
boot-up.
"registration" If set to "contact", a call
for x = 1, will be placed to the contact
"disabled" for specified in the callback
others attribute when the user
invokes message retrieval.
If set to "registration", a
call will be placed using
this registration to the con-
tact registered (the phone
will call itself).
If set to "disabled", mes-
sage retrieval is disabled.
Null Contact to call when
retrieving messages for this
registration.
Interpretation
IP address to advertise within SIP signaling -
should match the external IP address used by the
NAT device.
Optimization