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Cabling Specifications for the Universal Access Server

Cabling Specifications for the Universal Access Server

This appendix describes the T1 and E1 cables available for the AS5800 Universal Access Server and provides pinout information for the CT1 and CE1 trunk card.

CT1 and CE1 Trunk Card Port Pinout

The CT1 trunk card receives and transmits 1.544-Mbps signals through 100-ohm cable, using common RJ-45 connectors. Use a straight-through RJ-45-to-RJ-45 cable to connect the T1 lines to an RJ-45 receptacle.

The CE1 trunk card receives and transmits 2.048-Mbps CE1 signals through either 120-ohm or 75-ohm coaxial cable. All CE1 interface cables use common RJ-45 connectors on the dial shelf end.

The receive impedance is software configurable and may be configured as 75 ohms, 100 ohms or 120 ohms. The T1 default value is set at 100 ohms. The E1 default value is set at 120 ohms. Use the command line termination {75-ohm | 120-ohm} in controller configuration mode to configure the receive impedance.

For a complete description of the line termination command, refer to the Cisco AS5800 Universal Access Server Software Installation and Configuration Guide.

Table A-1 lists the CT1 and CE1 port pinout.


Table A-1: CT1 and CE1 Trunk Card Port (RJ-45) Pinout
Pin1 Signal

1

Receive tip

2

Receive ring

3

Jumpered ground

4

Transmit tip

5

Transmit ring

6

Jumpered ground

7

not used

8

not used

1Any pins not described in the table are not connected.

Warning The ports labeled "Network Clock," "10BaseT," "Dial Shelf Interconnect," "Console," and "Alarms" are safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because the E1/T1 circuits are treated like telephone-network voltage, avoid connecting the SELV circuit to the telephone network voltage (TNV) circuits.

CT1 Trunk Card Cables and Pinouts

Interface cables for connecting the CT1 card ports are available from Cisco Systems; these cables and their product numbers are listed in Table A-2:


Table A-2:
Cable Description Product Number

RJ-45 to Bare, 100-ohm

CAB-T1-RJ45BARE

CT1 Interface Cables

Figure A-1 shows the CT1 interface cable, and Table A-3 lists the pinouts.


Figure A-1: RJ-45-to-Bare Wire Interface Cable



Table A-3:
RJ-45 Pin Signal Description Direction Bare

Shield

Ground

Braid

J1-1

RX Tip

Twisted Pair #1

      <---

WIRE-1

J1-2

RX Ring

Twisted Pair #1

      <---

WIRE-2

J1-3

RX Shield

J1-4

TX Tip

Twisted Pair #2

      --->

WIRE-3

J1-5

TX Ring

Twisted Pair #2

      --->

WIRE-4

J1-6

TX Shield

RJ-45-to-Bare Cable Pinouts

CE1 Trunk Card Cables and Pinouts

Interface cables for connecting the CE1 card ports are available from Cisco Systems; these cables and their product numbers are listed in Table A-4.


Table A-4:
Cable Description Product Number

RJ-45 to RJ-45, 120-ohm

CAB-E1-RJ45RJ45

RJ-45 to DB-15, 120-ohm

CAB-E1-RJ45DB15

RJ-45 to DB-15 null, 120-ohm

CAB-E1-RJ45DB15N

RJ-45 to BNC, 75-ohm

CAB-E1-RJ45BNC

RJ-45 to Twinax, 75-ohm

CAB-E1-RJ45TWIN

RJ-45 to RJ-45 TE, 120-ohm

CAB-E1-RJ45TE

RJ-45 to RJ-45 NT, 120-ohm

CAB-E1-RJ45NT

RJ-45 to bare

CAB-T1-RJ45BARE

CE1 Interface Cables

The following figures and tables illustrate and describe the pinouts for each CE1 interface cable.


Figure A-2: RJ-45-to-RJ-45 Interface Cable



Table A-5:
RJ-45 Pin Signal Description Direction RJ-45 T1 Pin

Shield

Ground

Shell/Braid

Shield

J1-1

RX Tip

Twisted Pair #1

      <---

J2-1

J1-2

RX Ring

Twisted Pair #1

      <---

J2-2

J1-3

RX Shield

J1-4

TX Tip

Twisted Pair #2

      --->

J2-4

J1-5

TX Ring

Twisted Pair #2

      --->

J2-5

J1-6

TX Shield

RJ-45-to-RJ-45 E1 Cable Pinouts (Crossover)
Figure A-3: RJ-45-to-DB-15 Interface Cable



Table A-6:
RJ-45 Pin Signal Description Direction DB-15 Pin

Shield

Ground

Shell/Braid

Shell

J1-1

RX Tip

Twisted Pair #1

      <---

J2-3

J1-2

RX Ring

Twisted Pair #1

      <---

J2-11

J1-3

RX Shield

Twisted Pair #3

J2-4

J1-4

TX Tip

Twisted Pair #2

      --->

J2-1

J1-5

TX Ring

Twisted Pair #2

      --->

J2-9

J1-6

TX Shield

Twisted Pair #4

J2-2

RJ-45-to-DB-15 Cable Pinouts
Table A-7:
RJ-45 Pin Signal Description Direction DB-15 Pin

Shield

Ground

Shell/Braid

Shell

J1-1

RX Tip

Twisted Pair #1

      <---

J2-1

J1-2

RX Ring

Twisted Pair #1

      <---

J2-9

J1-3

RX Shield

Twisted Pair #3

J2-2

J1-4

TX Tip

Twisted Pair #2

      --->

J2-3

J1-5

TX Ring

Twisted Pair #2

      --->

J2-11

J1-6

TX Shield

Twisted Pair #4

J2-4

RJ-45-to-DB-15 Null Modem Cable Pinouts
Figure A-4: RJ-45-to-BNC Interface Cable for 75-Ohm, Unbalanced Connections



Table A-8:
RJ-45 Pin Signal Description Direction BNC Pin

Shield

Ground

Shell

RX, TX Shields

J1-1

RX Tip

Twisted Pair #1

      <---

RX-Tip

J1-2

RX Ring

Twisted Pair #1

      <---

RX-Shield

J1-3

RX Shield

Twisted Pair #3

RX-Shield

J1-4

TX Tip

Twisted Pair #2

      --->

TX-Tip

J1-5

TX Ring

Twisted Pair #2

      --->

TX-Shield

J1-6

TX Shield

Twisted Pair #4

TX-Shield

RJ-45-to-BNC Cable Pinouts
Figure A-5: RJ-45-to-Twinax Interface Cable for 75-Ohm, Unbalanced Connections



Table A-9:
RJ-45 Pin Signal Description Direction Twinax Pin

Shield

Ground

Shell

RX, TX Shields

J1-1

RX Tip

Twisted Pair #1

      <---

RX-1

J1-2

RX Ring

Twisted Pair #1

      <---

RX-2

J1-3

RX Shield

Twisted Pair #3

RX Shield

J1-4

TX Tip

Twisted Pair #2

      --->

TX-1

J1-5

TX Ring

Twisted Pair #2

      --->

TX-2

J1-6

TX Shield

Twisted Pair #4

TX Shield

RJ-45-to-Twinax Cable Pinouts
Figure A-6: RJ-45-to-RJ-45 Interface Cable



Table A-10:
RJ-45 Pin Signal Description Direction RJ-45 TE Pin

Shield

Ground

Shell/Braid

Shield

J1-1

RX Tip

Twisted Pair #1

      <---

J2-1

J1-2

RX Ring

Twisted Pair #1

      <---

J2-2

J1-3

RX Shield

Twisted Pair #3

J2-3

J1-4

TX Tip

Twisted Pair #2

      --->

J2-4

J1-5

TX Ring

Twisted Pair #2

      --->

J2-5

J1-6

TX Shield

Twisted Pair #4

J2-6

RJ-45-to-RJ-45 TE Cable Pinouts (Straight-through)
Table A-11:
RJ-45 Pin Signal Description Direction Signal RJ-45 NT Pin

Shield

Ground

Shell/Braid

Ground

Shield

J1-1

RX Tip

Twisted Pair #1

      <---

TX Tip

J2-4

J1-2

RX Ring

Twisted Pair #1

      <---

TX Ring

J2-5

J1-3

RX Shield

Twisted Pair #3

TX Shield

J2-6

J1-4

TX Tip

Twisted Pair #2

      --->

RX Tip

J2-1

J1-5

TX Ring

Twisted Pair #2

      --->

RX Ring

J2-2

J1-6

TX Shield

Twisted Pair #4

RX Shield

J2-3

RJ-45-to-RJ-45 NT Cable Pinouts (Crossover)

Warning The ports labeled "Network Clock," "10BaseT," "Dial Shelf Interconnect," "Console," and "Alarms" are safety extra-low voltage (SELV) circuits. SELV circuits should only be connected to other SELV circuits. Because the E1/T1 circuits are treated like telephone-network voltage, avoid connecting the SELV circuit to the telephone network voltage (TNV) circuits.


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Posted: Tue Jul 6 14:17:52 PDT 1999
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