Part 4 Wiring; Telephone Interface Board Connections; Figure 2: Telephone Interface Board Connections - Chamberlain SENTEX Infinity Series Installation Instructions Manual

A. TELEPHONE INTERFACE BOARD CONNECTIONS
1564F3
Caution: To avoid potential damage to the board, remove power to the unit before connecting or
disconnecting the phone line.
1. Connect a two conductor, 18 to 22 AWG cable (Belden Datalene #9501 or equivalent) to
TELCO LINE on the right lower corner of the telephone interface board's daughter board (see
Figure 2).
2. Connect the other end of this cable to the "tip" and "ring" terminals on the telephone company
jack (polarity is unimportant).
Rev C

PART 4 WIRING

Telephone Interface Board (SN1100329)
LINE
RING
CLICK LEVEL
VR3
CLICK
DETECT
Daughter Board (SN1110080)
MIC
PANEL
SENS
MIC

Figure 2: Telephone Interface Board Connections

Doc 6001565
OFF HOOK
CLICK LEVEL
PANEL
SPEAKER
J1
SPEAKER
LEVEL
VR4
LINE BAL 1
LINE BAL 2
TELCO LINE
HANDSET
TB1
GROUND
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