E1 PRI RJ-45 Cable
Hardware Installation Guide
Mosport 1TE/2TE
33
Crossover Cable
A RJ-45 crossover cable is used when only two systems are to be connected to each other, peer to peer, at
the Ethernet Cards by “crossing over” (reversing) their respective pin contacts. An example would be
connecting two computers together to create a network. The crossover eliminates the need for a hub when
connecting two computers. A crossover cable may also be required when connecting a hub to a hub, or a
transceiver to transceiver or repeater to repeater. When connecting a hub to a transceiver, a straight through
cable is always used.
A crossover cable is sometimes called a null modem. The coloured wires at either end are put into different
pin numbers, or crossed over.
Figure 14:
Crossover Connectivity
E1 PRI RJ-45 Cable
The E1 PRI is usually connected to a PBX or switch – local exchange (LE). Type and pin outs of these devices
vary depending on the manufacturer. The PRI ports pin outs are configurable, so ensure that the appropriate
mode (NET or USR) is configured. Refer to the
Software Configuration Guide
for more details.
The following describes the RJ-45 pinout information.
Figure 15:
RJ-45 Connectivity – PRI
Note:
This is not an IEEE supported configuration and should be used for test purposes only.
1- TX+
2- TX-
3- RC+
6- RC-
TX+ -1
TX- -2
RC+ -3
RC- -6
Warning:
Hazardous network voltages may be present in the PRI cables. If you detach the cable, detach
the end away from the Mosport 1TE/2TE first to avoid possible electric shock. Network hazardous voltages
may be present on the device in the area of the PRI port, even when power is turned OFF.
Caution:
To prevent damage to the Mosport 1TE/2TE, make sure that you connect the PRI cable to the
PRI port only and not to any other RJ-45 socket.
Table 17:
RJ-45 Pinout Information – PRI
Pin #
NT Interface
TE Interface – Default value
1
Transmit #2
Receive #2
2
Transmit #1
Receive #1
4
Receive #2
Transmit #2
5
Receive #1
Transmit #1
Pin 1
Pin 2
Pin 4
Pin 5
Pin 1
Pin 2
Pin 4
Pin 5
Summary of Contents for Mosport 1E-F
Page 6: ...Contents vi Mosport 1TE 2TE...
Page 10: ...Preface About this Manual Document Conventions x Mosport 1TE 2TE...
Page 32: ...Chapter 3 Powering on the Mosport 1TE 2TE Management Choices 22 Mosport 1TE 2TE...
Page 35: ...Disclaimers Hardware Installation Guide Mosport 1TE 2TE 25 RoHS China...
Page 52: ...Appendix C Standard Hardware Information Warranty 42 Mosport 1TE 2TE...
Page 60: ...Appendix E Glossary Wide Area Network WAN 50 Mosport 1TE 2TE...
Page 62: ...Appendix F List of Acronyms 52 Mosport1TE 2TE...
