17
15.
OPERATING PROCEDURE FOR PBX CONNECTION
The a300 Headsetphone is suitable for connection to a pABX which returns secondary
proceed indication.
15.1
PBX RECAll
When connected to a pBX, the telephone will send a Recall Signal to the
exchange when the RECALL button is pressed.This a300 Headsetphone
provides either TIMED LINE BREAK RECALL or EARTH RECALL. Consult
your pBX supplier or maintainer to ascertain which is compatible with your
pBX. Having established which you require select either ELR (Earth Recall)
or TBR (Timed Line Break Recall) using the ELR/TBR switch.
NB. Like the mute key the Recall key is a ‘hard switches’ not a ‘soft press’
key.This means that it will only depress slightly, and will remain depressed
until released.
15.2
PABX PAUSE FACIlITY
On pABX systems which provide secondary proceed indication you must
wait for the secondary proceed dial tone after dialling the initial access
digit(s), normally 9 for an outside line. For correct operation of the Memory
facilities it is therefore necessary to store a pause after the access digit to
ensure correct dialling. pressing the LNR key automatically inserts a 3.6
second pause in the dialling sequence.
NB: Do not enter more than 3 consecutive pauses. Failure to comply with
this may result in unsatisfactory operation and will invalidate the approval.
15.3
MESSAGE wAITING OPERATION
On 4 wire systems set the switch to 2/5 to enable message waiting on
compatible systems. For 6 wire systems set the switches to 1/6. Only one
message waiting telephone may be connected to an extension. If more
than one message waiting telephone is connected to a line, the system may
interpret this as an off hook condition.
15.4
GENERAl USE
It must be noted that there is no guarantee of correct working of this
telephone in all circumstances when connected to a PBX. Any difficulties
should be referred to the telephone supplier.
This telephone is approved for connection to most pBX’s. The supplier of
this telephone should be consulted for an up to date list of pBX’s with which
this telephone is compatible.