E appendix c, Ppendix, Onnector – CTI Products NCB/EM with External PSTN Modem User Manual
Page 45: Etails
CTI Products, Inc.
NCB-EM User Guide
Appendix C. Connector Details
39
A
PPENDIX
C.
C
ONNECTOR
D
ETAILS
DC IN Connector
Connector type:
2.5 x 5.5 mm coaxial
Mating Connector:
Switchcraft 760 or equivalent
Connector pinout:
CTI Products, Inc. standard power
supply wired with center pin positive,
NCB module can accept either pin
positive, polarity routing is provided
internal.
NETWORK Connectors
RJ45 Connectors:
Pins 1 and 2 of both RJ45 connectors as well as the terminal strip pins are all
wired in parallel. The dual RJ45 connector designates "IN" and "OUT".
These designations apply only to DC power that is passed down unused pairs
of the 4 pair network cable. The two pins carrying the network pair are
straight-through.
Connector Type:
Standard RJ45 telephone connector, 8 position 8
contact.
Pin
Function
Notes
1
Network
Network connection is NOT polarity sensitive
2
Network
Pins 1,2 of IN and OUT connectors tied parallel
3
+ DC Power
In on IN connector, Out on OUT connector
4
No Connection
5
No Connection
6
- DC Power
In on IN connector, Out on OUT connector
7
- DC Power
In on IN connector, Out on OUT connector
8
+ DC Power
In on IN connector, Out on OUT connector
2 Pin Terminal Strip style:
Mating Connector:
Weidmuller 128176
Pin
Function
1
Network
2
Network
+
-
Polarity
DC IN
Front View
NETWORK
OUT
IN
1
2
3
4
5
6
7
8
NETWORK
1
2