Options Mother and daughter boards

The options motherboard could be inserted into 1/7 ie shelf 1 position 7 with between 1 and 3 MF RXers. and or 1/8 with Speech. broadcast and modem cards.

MF4 option board

The MF4 Option board, has 2 DTMF receivers which allow DTMF phones to be used as extensions on your Herald

Speech Synthesis Option Card

The Speech Synthesis Option Card provides a comprehensive vocabulary of electronically generated (synthesized) 'spoken' messages which can be reproduced during the use of a terminal, e.g. THIS IS YOUR ALARM CALL at the time previously requested and YOUR LAST CALL COST requested metering of a call. In addition a user can interrogate a terminal to determine the facility, or number stored under a key and receive a 'spoken' answer, e.g. HOLD, DIVERT ON NO ANSWER, ONE· THREE-THREE

Workshop Manual for the Speech options card

Other option cards included...

Card SA 20568 Music on Hold Option 374723 Card SA 20569 Modem Option 374724 Card SA 20571 Broadcast Option 374725

Broadcast Option card workshop manual