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Figure 15: Rear View with DC Power Connector
Connect the Cables
1. Connect a Category 3 or better cable (Category 5 is recommended) to the RJ-48C connectors on
the 4xT1/E1 MUX modules, and attach the other end of the UTP cable to the network equipment. The
pinout for the RJ-48C is:
Pin 1 Customer Interface R1 – receive ring (C R1)
Pin 2 Customer Interface T1 – receive tip (C T1)
Pin 4 Customer Interface R – transmit ring (C R)
Pin 5 Customer Interface T – transmit tip (C T)
Pin 7 Alarm relay B (port 1 only) (AR B)
Pin 8 Alarm relay A (port 1 only) (AR A)
NOTE: Generally, a straight through cable is used at the head-end and a T1 crossover cable (Pin
1 to Pin 4, Pin 2 to Pin 5) is used at the far-end.
2. The 4xT1/E1 MUX module features dry relay contacts for optionally connecting the it into a separate
T1/E1 alarm circuit. The relay closes on:
•
Power loss
•
The detection of AIS or Loss of Signal (LoS) on any of the four local T1/E1 copper ports
•
The detection of AIS or LoS on any of the four remote T1/E1 copper ports
•
When the T1/E1 MUX is not peered with its remote partner
To utilize the alarm relay contacts, connect a two conductor insulated wire (not supplied) to pins 7 and
8 on the RJ-48 connector. Connect the other ends of the cable to the alarm detection device. See
specification below for the maximum voltage ratings supported by the alarm relay.
(pins 7 & 8 on RJ-48 port)
Manufacturer Spec
220V DC, 30W,
250V AC, 37.5VA,
1A max
3. When configured for E1 coax operation, use the optional adapter cables to convert the RJ-48C
interface ports to dual BNC (part number 9140-3) and set the T1/E1 Line Configuration DIP-switch for
E1 75 W Coax.
4. Insert the SFP fiber transceivers into the SFP receptacles on the TM3 module.
NOTE: The release latch of the SFP fiber transceiver must be in the closed (up) position before
insertion.
5. Connect the appropriate multimode or single-mode fiber cable to the fiber port of the installed module.
It is important to ensure that the transmit (TX) is attached to the receive side of the device at the other
Relay Contact Ratings
UL/CSA
30V DC, 1A (resistive)
110V DC, 0.3A (resistive)
125V AC, 0.5A (resistive)
Page 9
end and the receive (RX) is attached to the transmit side. When using single-fiber (SF) TM3 models,
the TX wavelength must match the RX wavelength at the other end and the RX wavelength must match
the TX wavelength at the other end.
6. Connect the TM3 RJ-45 port via a Category 5 or better Ethernet cable to a 10BASE-T, 100BASE-TX
or 1000BASE-T Ethernet device (depending on the configuration of the port).
LED Indicators
The T1/E1 MUX/M operates in a bookend configuration. Each T1/E1 MUX/M must have the same
physical configuration. During initialization, the MUX maps the modules and ports, creating a symmetrical
pairing between the MUXes.
4xT1/E1 MUX Module
Each T1/E1 MUX module has LEDs to indicate the status of the connection between the MUXes and the
local and remote T1/E1 signals. LED numbers in parenthesis (#), correspond to the numbers displayed
on the management interface.
LED Legend
Pwr (1)
Power
Sys (2)
Local System Status
Lnk (3,5,7,9)
Port Local Link T1/E1 Status LED
Rmt (4,6,8,10)
Port Remote Link T1/E1 Status LED
Stat (11)
Remote System Status
Figure 16: LED Indicators
The Sys LED indicates the status of the local 4xT1/E1 MUX module. A solid green LED indicates normal
system status. A blinking LED indicates different testing scenarios.
The Stat LED indicates the status of the remote 4xT1/E1 MUX module. A solid green LED indicates
normal remote system status. A blinking green LED indicates the remote 4xT1/E1 MUX module has not
synchronized with the local module or synchronization has started but not completed.
The Lnk LED indicates the local status of the T1/E1 signal. A solid green LED indicates a good T1/E1
signal is detected by the port. A blinking green LED indicates the port is not detecting the T1/E1 signal
(a T1 crossover cable may be required). A solid amber LED indicates the port is receiving an AIS signal.
A blinking yellow LED indicates a test condition.
The Rmt LED indicates the remote status of the T1/E1 signal. A solid green LED indicates a good T1/
E1 signal is detected by the port. A blinking green LED indicates a synchronization problem. A solid
amber LED indicates the port is receiving an AIS signal or the port is in local loopback.
LED
OFF: Loss of power or the Port Alarm Relay/LED switch is disabled
Solid Green: Local connection detected
Lnk
Blinking Green: Local port LoS (RED Alarm)
Solid Amber: Local port receiving AIS
Blinking Amber: Local port in T1/E1 copper loopback mode
OFF: Loss of power or the Port Alarm Relay/LED switch is disabled
Solid Green: Remote T1/E1 port connected
Rmt
Blinking Green: Remote T1/E1 port not connected or not synchronized
Solid Amber: Remote T1/E1 port connected but receiving LoS, AIS or port in local loopback
Lnk and Rmt
Sequential Pattern (left to right) Amber to Green:
(all ports)
T1/E1 MUX/M Initializing
Figure 17: Lnk and Rmt LED Indicators
Function
Color
Green
Green/Amber
Green/Amber
Green/Amber
Green/Amber
Function
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