Rj21X Connector (Mediatrix 4124); Creating A Rj21X Cable; Rj21X Pinout - Media5 Mediatrix 4100 Series Hardware Installation Manual

RJ21X Connector (Mediatrix 4124)

RJ21X Connector (Mediatrix 4124)
The Mediatrix 4124 uses the RJ21X, or "Amphenol-type", connector as network interface with the Key Service
Unit (KSU) or PBX Main Distribution Frame. The Mediatrix 4124 can thus be used in a variety of situations:
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Creating a RJ21X Cable

The Mediatrix 4124 can use from 1 to 24 single or multiple-pair circuits bridged to the network or other
connected equipment. These circuits are usually wired in a RJ21X cable and then plugged into the RJ21X
connector of the Mediatrix 4124.
To meet the Class B EMI requirements, a shielded cable and connector shall be used. The shield shall be an
overall aluminium foil and be connected to the connector shield.
Note:
The cable may be directly connected to the PBX or cross-connected via a Bix termination and cross-connect
system. In fact, depending on the technician involved, the scenarios may vary.

RJ21X Pinout

Pins 1 (ring) and 26 (tip) of the ribbon connector are considered position 1. Pins 2 (ring) and 27 (tip) are
position 2. This pairing continues through 24 pairs.
Mediatrix 4100 – Analog Access Device
It can be directly connected to a PBX via analog lines. These analog lines would be wired in a
RJ21X cable.
The PBX may have some analog lines connected to the SCN, while other lines could be
connected to the IP network via the Mediatrix 4100.
Installation of the analog lines via a RJ21X cable shall be done by a qualified technician.
Line
1 (with Bypass)
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
Table 16: RJ21X Pinout
Ring
pin1 pin26
pin2 pin27
pin3 pin28
pin4 pin29
pin5 pin30
pin6 pin31
pin7 pin32
pin8 pin33
pin9 pin34
pin10 pin35
pin11 pin36
pin12 pin37
pin13 pin38
pin14 pin39
pin15 pin40
pin16 pin41
pin17 pin42
Hardware Installation Guide
Tip
33