User's Manual Part 2

Chapter 9 The VoIP General Screens
BM2022w User’s Guide
161
9.4 SIP Settings
Click VoIP > General > SIP to set up session timer on the BM2022w. See Section 10.8 on page
173 for more information on SIP.
Figure 88 VoIP > General > SIP
The following table describes the labels in this screen.
9.5 Speed Dial
Speed dial allows you to use a shorter number for dialing frequently used phone numbers.
Click VoIP > General > Speed Dial to add, edit, or remove speed-dial rules.
Figure 89 VoIP > General > Speed Dial
Table 70 VoIP > General > SIP
LABEL DESCRIPTION
Session Timer
Enable
Select this to activate the BM2022w’s SIP Session Timer. SIP Session Timer is a
function used by both of the communication peers to determine if the call
session is still active (alive) or not. It uses the method specified in the following
Refresh Method field to periodically refresh the SIP sessions.
Refresh Method Select the method to be used for periodically refreshing SIP sessions, to
determine if the session is still active. Select UPDATE to use Update requests to
refresh the session and select INVITE to use Re-Invite requests. You should
use the same method as the peer device.
The Update method uses less overhead than Re-Invite, but is not as widely
supported as Re-Invite. By default the BM2022w is set to use the UPDATE
method. When set to UPDATE, the BM2022w can also revert to using the
INVITE method for SIP session refresh, depending on the method supported
and allowed by the peer device.