24 UDACT Instruction Manual — P/N 50050:M 12/18/2009
Installation and Wiring Telephone Connections
2.4 Telephone Connections
Provision to connect to two independent telephone lines is available via two telephone jacks
labeled “PH1” (Primary) and “PH2” (Secondary). Telephone line control/command is possible via
double line seizure as well as usage of an RJ31X style interconnection. (RJ31X jacks must be
ordered separately).
Important! The UDACT must not
be used to dial a phone number that is call-forwarded per
requirements of UL 864 9th Edition.
Figure 2.8 Wiring Phone Jacks
NOTE: It is critical that the UDACT be located as the first device on the incoming telephone circuit
to properly function.
1 2 3 4 5 6 7 8
1 2 3 4 5 6 7 8
UDACT-03.cdr
RJ31X
Jack
RJ31X
Jack
Ring
Tip
Ring
Tip
Ring
Tip
Ring
Tip
Green
Green
Red
Red
To Premise Phones To Premise Phones
Secondary Lines-
Incoming Telco
Phone Lines
Primary Lines-
Incoming Telco
Phone Lines
Shorting bars inside
jack removed during
male plug insertion
Secondary Phone
Line - PH-2
Primary Phone
Line - PH-1
Seven foot Cable
MCBL-7
(order separately)
Male Plug
Connectors
Modular Female
Connectors