AT&T 75 manual Tones Associated With CAS Calls, Tone Number Type of Call

CHAPTER 6. CENTRALIZED ATTENDANT SERVICE (CAS) (V3 AND GENERIC 1 SYSTEMS) —

The following features do not function on CAS calls:

•Attendant Auto-Manual Splitting

ŽAttendant Conference.

Tones Associated With CAS Calls

In addition to the normal attendant console tones, the following call identification tones are associated with CAS calls:

•LDN (incoming trunk) call—three short bursts of low-pitched tone

Note: Branch locations served by 770A or 812A PBX switches do not send LDN call identification tone.

•Dial 0 call from branch (voice terminal to console)—an on-off low-pitched tone

Ž Recall on Call Waiting —a short burst of low-pitched tone

•Remote Hold Recall—a series of four through six cycles of an on-off low-pitched tone

ŽRecall on Don’t Answer—normal ringback tone for about 1/4 second followed by connection to normal ringing.

Attendants who are authorized to use the Facility Test Call feature (see Chapter 4) can access and listen to the tones associated with CAS calls. To access these tones, perform the following procedure:

1.Dial the Facility Test Call access code.

•Dial tone heard.

2. Dial * and one of the following 2-digit tone numbers:

Tone Number Type of Call

32Listed Directory Number (LDN)

33Dial 0

36 Recall on Don’t Answer

38Recall on Call Waiting Tone

40Remote Hold Recall Tone

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