Operator's Manual
B-23
Oper
ati
o
n
Monitoring a room from an internal telephone:
Monitoring a room from an external telephone:
Using the immediate connection without dialling function, you can set a telephone in the PBX
such that approximately two seconds after somebody lifts the handset the system automat-
ically calls an external extension via an abbreviated dialling number, an internal extension
or a group of subscribers. This means that it is not necessary to press any buttons on the
phone. However, if you start manually dialling a number within the first two seconds, this is
given priority. Note in this connection that many phones do not immediately start outputting
digits when you press the keys (it is often delayed by up to half a second). You should there-
fore start dialling promptly!
h
Room monitoring can only be activated on one internal extension at the same time.
If you try to set up a second telephone, the system issues the engaged tone after you
punch in the number.
To deactivate room monitoring
씮
simply replace the handset of the corresponding tele-
phone.
It is not possible to monitor a room secretly, since you must always set up the telephone
according to the procedure described above.
1. 29. 2
Carrying out room monitoring
b
f
n
f
Internal dial tone
Internal calling number (e.g. 33) of the telephone
that is set for room monitoring
Room monitoring
b
r
f
8
W
f
77
f
Exter-
nal
phone
Own remote
switching and
programming
MSN/DDI
Brief
tone
Using DTMF tele-
phone or DTMF
generator
Exter-
nal
pass-
word
External
acknowledge-
ment tone
(1-second con-
tinuous tone)
Room
monitoring
h
Engaged tone
씮
wrong or incomplete code or you waited longer than 15 seconds
while entering the code. Replace the handset and start again from the beginning.
External room monitoring is conditional on your having informed the system of the
remote switching and programming MSN/DDI and that you know the external password
(default setting is 4321) (see Chapter Necessary Settings for External Remote Switching
and Programming on page I-70 in the Installation and Configuration Manual).
1. 30
Immediate connection without dialling (automatic dialling after you lift the
handset)
