Yealink SIP-T2 SERIES Administrator's Manual page 283

3. Enter the delay time in the Hotline Delay(0~10s) field.
4. Click Confirm to accept the change.
To configure hotline via phone user interface:
1. Press Menu->Features->Hot Line.
2. Enter the hotline number in the Hot Number field.
3. Enter the waiting time (in seconds) in the Hotline Delay field.
4. Press the Save soft key to accept the change.
For security reasons, IP phones support off hook hot line dialing feature, which allows
the phone to first dial out the pre-configured number when the user lifts the handset,
presses the Speakerphone key/off-hook key or desired line key, dials out a call using the
account with this feature enabled. The SIP server may then prompt the user to enter an
activation code for call service. Only if the user enters a valid activation code, the IP
phone will use this account to dial out a call successfully.
Off hook hot line dialing feature is configurable on a per-line basis and depends on
support from a SIP server.
Note
Off hook hot line dialing feature limits the call-out permission of this account and disables
the hotline feature. For example, when the phone goes
feature enabled, the configured hotline number will not be dialed out automatically.
The server actions may vary from different servers.
It is also applicable to the IP call and intercom call.
Configuring Basic Features
off
hook using the account with this
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