Radio Shack CID-2904 - Manual (Page 14)

14 Preparation
Notes:
• If you connect the CID to only one
phone line, the CID displays Caller ID
information for only that line.
• The USOC number of the jack to be
installed is RJ11C (for a single-line
phone jack) or RJ14C (for a two-line
phone jack).
• One two-line modular cord and one
single-line modular cord are supplied.
The two-line cord has four pins inside
the jack. The one-line cord has two
pins inside the jack.
The following illustrations show the pos-
sible connections, depending on your
telephone and phone line setup:
For a Two-Line Phone and a Two-Line
Phone Jack
Two-Line Phone Line 1/Line 2
Caller ID