RJ48C, RJ48S, RJ48X - T1 Jacks - Cable

本文深入探讨了RJ48C、RJ48S和RJ48X接口代码在T1电缆终止和本地区域数据通道的应用。涵盖了它们的机械排列、电气网络连接和典型用途,解释了USOC系统的背景和重要性。

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The RJ48C & X interface code is used at DS1 (T1) network interfaces using 
pins 1-2 (CPE Receive from the Network) & 4-5 (CPE Transmit towards the 
network.

The RJ48C "jack" interface is non-looping. That is, unlike the RJ48X jack 
that provides an immediate hard wire TX/RX loopback when the 8 pin plug 
from the connecting cable is removed, the RJ48C interface does not.

The 48C is typically found on T1 NIU's (Smartjacks). With some

exceptions, as in the Verizon New Englans area, a RJ-48X (Auto-looping)

interface is more commonly found.

The RJ48S interface is found on DDS 4 wire hand CPE offs. The pins outs

for a RJ48S: PINS 1-2 (CPE Transmit to the network), PINS 7-8 (CPE

Receive from the network)

The 48S is generally not configured for automatic loopback upon reoval of

the 8 pin plug. However is some rather rare ILEC applications it can be

found so configured.

Note. The JM8 interface code used on analog data interfaces is pined out

identical to the RJ-48S DDS inteface when used. Since the same station

equipment mounting jack is used by most major ILEC's for both Analog Data

Station Terminations (DST's), and Adtran DDS OCU-R's.

Bill

 

 

Form

http://www.telecom-gear.com/RJ48C-RJ48S-RJ48X-Searches-are-preposterous-article616--2.htm

http://www.arcelect.com/RJ48C_and_RJ48S_8_position_jack_.htm



http://blog.163.com/runnur_fang/blog/static/16884273200821591837523/


RJ48C and RJ48S RJ48X 8 position jack pin out for T1 cable termination and local area data 
channels/subrate t1 digital services

Pin outs for T1 Cable and cross over cable
T1 Cable can be a RJ48 or a simple RJ 8 pin 
depending on the correct wiring


RJ48C

UNIVERSAL SERVICE ORDER CODE (USOC): RJ48C

Mechanical Arrangement: Miniature 8-position jack. Typical Usage: 1.544 Mbps digital services. 
Electical Network Connection: T&R, T1 R1, conductors 7 and 8 provide cable shield integrity. 
Conductors 3 and 6 are reserved for future use.



RJ48S
DDS Telco on RJ45

UNIVERSAL SERVICE ORDER CODE (USOC): RJ48S

Mechanical Arrangement: Miniature 8-position keyed jack. 
Typical Usage: Local area data channels/subrate digital services. 
Electrical Network Connection: One or two line T&R or T&R, T1.



RJ48X



Understanding USOC and what those RJ codes really mean. The Universal Service Ordering Code (USOC) system was developed by the Bell System and introduced by AT&TO in the 1970s to connect customer premises equipment to the public network. These codes, adopted in part by the FCC, Part 68, Subpart F, Section 68.502, are a series of Registered Jack (RJ) wiring configurations for telephone jacks that remain in use today.





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