Northern Telecom DMS-100 Series Technical Description, Installation, Operation And Maintenance Instructions page 11

PRACTICE 297-2011-202
Table 3-A Continued
OPERATION OF HANDSFREE FEATURE - M5112 BUSINESS SET
Idle or Active
Active. Handsfree ON
Active. Handsfree ON
Idle or Active
Active. Handsfree ON
Volume Control
Page 3-4
Depress Handsfree key
Depress Rls (Release) key
Lift handset
Plug in headset
Depress Mute key
3.13 Dialpad. Before a call is established, no tone-feedback is
provided when the dialing keys are being pressed. After a call has been
established, end-to-end signaling using CO generated DTMF tones is
enabled.
3.14 Hold. The HOLD function has two modes of operation, manual
and automatic. With the user engaged in a call, the call can be put on
hold either by pressing the HOLD key or by pressing another DN key.
In either case the DN LCD changes from ON to "winking" and the user
is free to answer or make another call.
3.15 Release. The Rls key performs a similar function as going
on-hook, i.e. when pressed, it terminates a call. The DN LCD associated
with the released call changes from the ON state to the OFF state,
however, the status of the Set remains "off hook" to the switch.
3.16 There are five volume registers which permit independent
adjustments for handsfree, headset, handset, on-hook dialing, and
alerting tone volumes. Volume settings are maintained as follows:
Enable Generates off-hook condition
(Handsfree LCD indicator
turns ON and speech is
transferred to Handsfree
speaker).
Disable Generates on-hook condition
(Handsfree LCD indicator is
turned OFF).
Disable Transfers speech to handset
(Handsfree LCD indicator is
turned OFF).
Disable Disables Handsfree feature
and transfers speech to
headset.
Mute Disables microphone but
speaker remains on.
Microphone can be restored
by operating the Mute key
again. The Mute LCD indicator
winks during microphone
muting; winking stops if Mute
key is depressed again. The
Mute feature also functions in
handset and headset modes.