Panasonic KX-TA624 Installation Manual page 20

1.4 Options
1.4.1 3 CO Line and 8 EXT Expansion Card (KX-TA62477)
1.4.2 8 Extension Expansion Card (KX-TA62470)
1.4.3 Caller ID Card (KX-TA62493)
1.4.4 OGM/FAX Detection Card (KX-TA62491)
1-4 System Outline
Adds three outside (CO) lines (outside (CO) lines 4 through 6) and
eight extensions (JACK 09 through 16).
Adds eight extensions (JACK 17 through 24).
This card supports the following.
Caller ID: Receives the Caller ID Service from the Central Office.
A specified display proprietary telephone with Caller
ID service can display the information. It can also
display caller's information which has been stored in
the system according to the Caller ID service.
Up to two cards can be installed to the system. One Caller ID card
supports three outside (CO) lines.
This card supports the following. There are two circuits, therefore
up to two calls can be received simultaneously.
Direct Inward System Access (DISA) with an OGM:
One of the system features. An outgoing message
greets the external caller and provides information so
that the caller can access the extension(s) directly.
Facsimile detection:
When the system receives a facsimile transmission
signal by DISA, it automatically connects the specified
facsimile extension.
Central
Office
External Telephone
Outside (CO) Line