Specifications

RJ-11 (Telephone) Cable Reference Manual (MGCP/NCS Version)
Mediatrix 4100
205
RJ-11 (Telephone) Cable
The RJ-11 cable is commonly used for telephone connection.
Wiring Conventions
For telephone connections, a cable requires one pair of wires. Each wire is identified by different colors. For
example, one wire might be red and the other, red with white stripes. Also, an RJ-11 connector must be
attached to both ends of the cable.
Each wire pair must be attached to the RJ-11 connectors in a specific orientation. The following figure
illustrates how the pins on the RJ-11 connector are numbered. Be sure to hold the connectors in the same
orientation when attaching the wires to the pins.
Figure 36: RJ-11 Connector Pin Numbers
The RJ-11 pair of wires is wired so that pins 3 and 4 are connected to the Ring and Tip, which meets the
following requirements:
 EIA/TIA-IS 968
 CS-03 Issue 8, Part III requirements.
Caution: Do not plug a phone jack connector into an RJ-45 port.
Table 134: RJ-11 Pinout Information
Pin # Function
1 Not used
2 Not used
3 Ring
4Tip
5 Not used
6 Not used
Warning: The RJ-11 cable should comply with UL 1863 and CSA C22.2 No 233 standards.