Telephone Line Emulator User’s Manual
40-400-00020, Rev. M
69
International Caller ID Software Module (TLE-ICID)
Introduction
The TLE-ICID Software Module is designed as an upgrade to work in conjunction with the
TLE-INTL Software Module. The TLE-ICID Software Module will support generation of
Caller ID in both FSK and DTMF signaling formats in both an on-hook (Type 1) and off-
hook (Type 2) transmissions. This module will allow the user to configure many
parameters of the Caller ID signaling such that countries not configured by default in the
TLE may be supported. Caller ID is also known as CLIP, Calling Line Identification
Presentation, but will be referred in this document as Caller ID or CID. Visual Message
Waiting is a special form of Caller ID used to inform a user that messages are waiting in a
voice mailbox.
The programming of the TLE-ICID operating parameters is supported using multiple
screens. Call Waiting and Caller ID were once separate screens, but have been
combined in the TLE-ICID module.
Note: The various Caller ID devices and telephones display the Caller ID information in different
ways. Please refer to the technical documents supplied by the manufacturer for details.
Teltone uses various technical references to determine the default values for
specific countries. However, there are circumstances where a parameter
may have several variations, or new standards may be announced.
Consequently, each user must verify that the operating parameters are valid
for their application and usage.
Overview - TLE-ICID
The basics of Caller ID are that after an Alerting Sequence, a specially formatted message
is sent to a telephone or other adjunct device that will display the identity of the calling
party. This may be sent while the telephone or adjunct are in an on-hook state (Type I
signaling), or while they are in an off-hook state (Type II signaling).
In Type I signaling, the Alerting Sequence may be a Ring, Line Reversal, Open Switch
Interval, Dual Tone, a combination of signals, or there may be no alerting signal. The
formatted message may be sent as FSK or DTMF, and may contain only the time/date
and telephone number of the calling party (Single Data Message Format, or SDMF) or it
may contain the name of the calling party or other call details (Multiple Data Message
Format, or MDMF).
In Type II signaling, the Alerting Sequence consists of a Subscriber Alerting Sequence
(SAS, or Call Waiting Tone), followed by a CPE Alerting Sequence (CAS tone or Dual
Tone Alerting Sequence). The telephone or adjunct responds to the alerting sequence
with an acknowledgement signal, and then the Caller ID message is sent. The called party
can then decide whether or not to answer the call, based upon the identity of the calling
party. As in Type I signaling, the formatted message may contain only the time/date and
telephone number of the calling party (Single Data Message Format, or SDMF) or it may
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