Chapter 2 - Universal Socket Pinout; Pinout Diagrams; Universal Socketmodem Pinout - Multitech MT-SMI-DK Development Manual

Chapter 2 – Universal Socket Pinout

Pinout Diagrams

Universal SocketModem Pinout

Note:
Some modems do not include all the pins shown above. Refer to your model's Device Guide for model
specific pinout information.
Pin Signal Name
1 Tip
2 Ring
3 Safety Void
4 TX+
5 TX-
6 RX-
7 RX+
8 Safety Void
9 Dummy
Universal Socket Developer Guide
In/Out Description
I/O Tip Signal from Telco. Tip connection to the phone line (RJ-11 Pin 4). The
SocketModem is Tip/Ring polarity insensitive.
I/O Ring Signal from Telco. Ring connection to the phone line (RJ-11 Pin 3). The
SocketModem is Tip/Ring polarity insensitive.
N/A Safety Clearance. 2.5 mm is required between TNV circuits and SELV circuits.
O Transmit Outputs (TX+ and TX-). Differential transmit outputs for Ethernet.
O Transmit Outputs (TX+ and TX-). Differential transmit outputs for Ethernet.
I Receive Inputs. Differential receive input pins for Ethernet. Dummy pin for
MT810SWM-IP.
I Receive Inputs. Differential receive input pins for Ethernet.
N/A Safety Clearance. 2.5 31mm is required between TNV circuits and SELV circuits.
Dummy pin for EDGE.
CHAPTER 2 – UNIVERSAL SOCKET PINOUT
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