TLS-3B User’s Manual
40-400-00032, Rev. B
6
Off-Hook Modes
The off-hook mode specifies what you hear when you lift the receiver on one of the
telephones connected to the TLS-3B. The three off-hook modes are Normal, which
provides dial tone; Ringdown, which causes the other telephone to ring; and Silence,
which connects the telephone to silence. The Normal mode is the default. For
programming information, see “Individual Line Commands” on page 11.
CALLER ID
The TLS-3B provides optional Caller ID (FSK) signaling on both lines. It supports
both Single Message Format (Date/Time/Number) and Multiple Message Format
(Date/Time/Number/Name). The Caller ID transmission is sent during the first long
silent interval after the first ringing cycle. A typical standard ringing period is
composed of a 2-second ringing cycle and a 4-second silent interval. Distinctive
ringing periods may be several short ringing cycles followed by at least a 3-second
silent interval. The TLS-3B is capable of many different types of ringing cycles and
silent periods (see “Programming the TLS-3B” on page 8), but a silence period of at
least 3 seconds is required in order to send a Caller ID message.
The display of the Caller ID information depends upon the type of equipment
connected to the TLS-3B, it may appear on the telephone itself, in the display of a
separate device, or on the video display of a personal computer.
Caller ID Date/Time
The TLS-3B issues a Date/Time value of 01/01 1:05 for the initial call after power is
applied. Subsequent calls will increment the time by 5 minutes. The Date/Time will
be reset back to the initial value of 01/01 1:05 if power is cycled on the TLS-3B.
Caller ID and Distinctive Ringing
Since there are circumstances such as privacy blockage, an out of area call, or a
transmission error, in which Caller ID is blocked, the TLS-3B can simulate these
events.
If you change the distinctive ringing cycles, remember that a 3-second silence is
required for the Caller ID information to be sent.
Compatibility with Caller ID Devices
Since there are a variety of Caller ID devices, the appearance of the information and
the amount displayed may differ slightly. For example, the format of the date and
time may be displayed differently.
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