User manual

IVC Card Features and Support

Caller ID, which identifies the original subscriber line, provides the following

information for the originating call:

• Calling party's number

• Calling party's name (the name, if available, associated with the directory listing)

• Date of call

• Time of call

The system sends the calling party information on the destination subscriber loop

between the first and second rings. It sends the information serially as two tones in FSK

mode. The first tone represents logic-1 (mark) and the second tone represents logic-0

(space). Caller ID uses the same frequencies, modulation type, and data format as Bell

type 202 modems.

The Caller ID message contains a Channel Seizure string, followed by a Mark string,

followed by the caller information. Caller information is in either Single Data Message

Format (SDMF) or Multiple Data Message Format (MDMF). SDMF does not include the

calling party's name.

The calling party's number is either a directory number, a seven-digit Network

Numbering Plan (NNP) number, or a number provided by the public switched telephone

network (PSTN). See "Calling Party Number Format" for details.

To enable IVS to support Caller ID and Call Waiting, you must configure an Integrated

Voice Controller (IVC) card with an FSK application that can generate call information

in MDMF. The FSK IVC is a shared resource in the PointSpan system. With the System

Parameters (SPAR) command, you can assign each of the card's 72 ports to an FSK

Group (FSKG). With the SPAR command, assign one FSKG to each switching partition

that supports Caller ID. You must equip every FSKG port in a partition. For any call,

caller information is sent by an FSK circuit that belongs to the FSKG assigned to the

partition for the destination station.

See "Enable IVS Support for Caller Identification" for an overview of the process.

Table 7 describes the conditions that determine the calling party number.

A calling party's number is either:

• A directory number

• A seven-digit Network Numbering Plan (NNP) number

• A number from the public network

Aastra - 2489-005 69