Polycom 1725-11530-310 User Manual

Administrator’s Guide SoundPoint IP / SoundStation IP 

A - 120

In the following table, x is the registration number. IP 301, 320, 330, 430: x=1-2; 

IP 501: x=1-3; IP 550, 560: x=1-4; IP 600: x=1-6; IP 601: x=1-12; 

IP 650, 670: x=1-34; IP 4000: x=1; IP 6000: x=1; IP 7000: x=1.
This configuration attribute is defined as follows:

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.

msg.mwi.x.subscribe

ASCII encoded string containing 
digits (the user part of a SIP 
URL) or a string that constitutes 
a valid SIP URL (6416 or 
6416@polycom.com)

Null

If non-Null, the phone will send 
a SUBSCRIBE request to this 
contact after boot-up.

msg.mwi.x.

callBackMode

contact or
registration or
disabled

“registration”

Configures message retrieval 
and notification for the line.

If set to “contact”, a call will be 
placed to the contact specified 
in the callback attribute when 
the user invokes message 
retrieval.

If set to “registration”, a call will 
be placed using this registration 
to the contact registered (the 
phone will call itself).

If set to “disabled”, message 
retrieval and message 
notification are disabled.

msg.mwi.x.callBack

ASCII encoded string containing 
digits (the user part of a SIP 
URL) or a string that constitutes 
a valid SIP URL (6416 or 
6416@polycom.com)

Null 

Contact to call when retrieving 
messages for this registration.