multiple calls are held, you can return to the held call by using the up and down arrow keys to
scroll to the required call.
Procedure
1. To put an active call on hold, press the
Hold
soft key.
2. To resume the held call, press the
Resume
soft key, or press the line key of the held call.
Off-hook alert
When enabled by your system administrator, this feature allows your phone to send alerts to a
monitoring phone when it is off the hook for a set period of time with no action on user side. The
phone sends alerts in the following cases:
• If you take the handset off the hook and do not dial any digits for a set period of time and
then do not end the failed session.
• If you take the handset off the hook, dial an incomplete or invalid phone or extension number,
and do not end the failed session after a set period of time.
When the phone dials the off-hook alert destination extension, the call can be picked up and you
will have a two-way talk path with the monitoring party.
Off-hook alert
December 2021
Using Avaya J139 SIP IP Phone in Open SIP
37
