Appendix A

Appendix A: Pin-out Assignments

The rear of the switch has two RJ21 connectors; one for the LINE (also called PBX, PSTN, or System) connections and one for PHONE (also called House or Station) connections. The connector is wired as a 50 pin telco connector, as follows:

RJ21 Line Connectors

Pin 26

=

line 1

Tip

Pin 1

=

line 1

Ring

Pin 27

=

line 2

Tip

Pin 2

=

line 2

Ring

Pin 50

=

line 25

Tip

Pin 25

=

line 25

Ring

RS-232 console port

Pin 1

Unused

 

Pin 6

Unused

Pin 2

TXD – transmit data

 

Pin 7

Unused

Pin 3

RXD – receive data

 

Pin 8

Unused

Pin 4

Unused

 

Pin 9

Unused

Pin 5

GND – signal ground

 

 

 

Motorola, Inc.

549453-001-00-a

Page 47 of 51

 

 

 

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Image 47
Motorola 45101, T2-2500 manual Appendix a Pin-out Assignments, RJ21 Line Connectors, RS-232 console port

45101, T2-2500 specifications

The Motorola T2-2500,45101 is a versatile and robust two-way radio that exemplifies the advanced communication technologies of its time. Designed for both professional and industrial use, this device stands out due to its durability and functionality, making it a popular choice among a range of users, from security personnel to event coordinators.

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The device operates on multiple channels, allowing users to select from various frequencies. This feature provides flexibility in communication, particularly in crowded areas where multiple teams might be communicating simultaneously. The T2-2500's channel scanning capability also enables users to monitor active channels quickly, promoting immediate responsiveness.

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