Nortel Meridian SL-100 Reference Manual page 169

Meridian SL-100 features 6-33
feature, the holding party first flashes and then dials the activation code for
that feature. As a result the held party, due to this flash, has audio provided
by the MOT feature during the time the holding party has completed the
dialing of the activation code for that feature. While the feature is activated,
audio is provided to the held party for a short duration. As a result, the held
party is provided a short audio interlude.
Call Waiting (CWT)
When the CWT subscriber flashes to answer the waiting call, the call put on
hold receives audio. If the subscriber then flashes again to put the active call
on hold and returns to the original call, audio is removed from the first call
and applied to the second call.
If a CWT subscriber has been put on hold and is receiving audio, and a
waiting call is presented to that subscriber, the subscriber should hear the
CWT indications overlaid on the audio. That is, the held party should hear:
MUSIC –––– CWI –––– MUSIC –––– CWI –––– MUSIC ––––
until the waiting call is answered or the Call Waiting indicator times out.
If the CWT subscriber goes on hook with a party on hold, the CWT
subscriber is called again by that call. The held party should continue to
receive audio while the CWT subscriber's phone is ringing.
Conference Call (CNF)
If a participant in a conference call puts the conference on hold, then MOT
does not provide audio to the other conferees. The same interaction applies
to the three-way conference call.
Call Hold (CHD)
When a set flashes to initiate Call Hold, the held party is provided audio or
an announcement immediately, according to the audio source for MOT.
After the user dials the call hold access code, audio is replaced with the
audio or annoucement from the audio source of the Call Hold feature.
Permanent Hold (PHOLD)
When a set flashes to initiate Permanent Hold, the held party is provided
audio or and annoucement immediately, according to the audio source for
MOT. If the audio source of MOT is differenct from one of the Permanent
Hold feature, then after the user dials the permanent hold access code, then
MOT's audio is stopped and the Permanent Hold feature audio starts.
Meridian SuperNode MSL-100 Meridian Modular Telephones Reference Manual MSL11