Administrator’s Guide for SIP-T5 Series Smart Media Phones
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Off Hook Hot Line Dialing
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 or taps 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
Procedure
Off hook hot line dialing can be configured using the configuration files.
Central Provisioning
(Configuration File)
Configure off hook hot line dialing
feature.
Parameter:
account.X.auto_dial_enable
Specify the number that the phone
first dials out.
Parameter:
account.X.auto_dial_num
Details of Configuration Parameters:
account.X.auto_dial_enable
(X ranges from 1 to 16)
Description:
Enables or disables the IP phone to first dial out a pre-configured number when a user lifts
the handset, presses the Speakerphone key or taps the desired line key or dials out a call
using account X.
0-Disabled
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 off hook using the account with this 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.
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