Yealink SIP-T2 SERIES Administrator's Manual page 381

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X ranges from 1 to 3 (for SIP-T40P/T23P/T23G)

X ranges from 1 to 2 (for SIP-T21(P) E2)

X is equal to 1 (for SIP-T19(P) E2/CP860)

Note: It works only if the value of the parameter ―account.X.session_timer.enable‖ is

set to 1 (Enabled).

Web User Interface:

Account->Advanced->Session Refresher

Phone User Interface:

To configure session timer via web user interface:

Click on Account->Advanced.

Select the desired account from the pull-down list of Account.

Select the desired value from the pull-down list of Session Timer.

Enter the desired time interval in the Session Expires(30~7200s) field.

Select the desired refresher from the pull-down list of Session Refresher.

Click Confirm to accept the change.

Call hold provides a service of placing an active call on hold. When a call is placed on

hold, the IP phones send an INVITE request with HOLD SDP to request remote parties to

Configuring Basic Features

Permitted Values