T1 Multiplexer | iConverter T1/E1 MUX/M T1 Multiplexer | iConverter T1/E1 MUX/M

iConverter T1/E1 MUX/M

T1/E1 Multiplexer

The iConverter T1/E1 MUX/M multiplexes up to sixteen T1 or E1 circuits and one 10/100/1000 Ethernet service onto a fiber optic transport link, and features remotely managed testing and configuration capabilities.


Multiplexes up to sixteen independent T1 or E1 circuits from copper links onto one fiber link

  • 10/100/1000 copper Ethernet service multiplexed with T1/E1 circuits
  • Small Form Pluggable (SFP) or fixed fiber transceivers, in standard and CWDM wavelengths
  • Supports multimode, single-mode dual fiber and single-mode single-fiber
  • Remotely-managed configuration and testing enables rapid deployment
  • Management via local serial port, Telnet, or SNMP
  • Configurable alarm relay contacts for audio/visual fault notification
  • Supports local and remote fiber and copper loop-back modes
  • Commercial (0 to 50º C) and wide (-40 to 60º C) operating temperature ranges
  • Lifetime Warranty and free 24/7 Technical Support


The iConverter T1/E1 MUX/M multiplexes up to sixteen T1 or E1 circuits and one 10/100/1000 Ethernet service onto a fiber optic transport link, and features remotely managed testing and configuration capabilities.

The iConverter T1/E1 MUX/M operates in a back-to-back configuration, and can be used in applications such as multiple T1/E1 extension, mobile backhaul and building-to-building PBX connectivity.

The T1/E1 copper interfaces are available in 4, 8, 12 or 16 RJ-48 port configurations for balanced T1/E1 applications. Optional adapter cables are available to convert each RJ-48 interface to a BNC interface for unbalanced E1 transport applications.

Additional hot-swappable 4-Port T1/E1 MUX modules can be installed to increase system capacity up to 16 T1/E1 ports maximum per 1U (1.75 inch) chassis.

The T1/E1 MUX/M is available with fixed-fiber or Small Form Pluggable (SFP) transceivers, enabling easy adaptability to different fiber types, distances and wavelengths. The T1/E1 MUX/M supports multimode, single-mode, single-mode single-fiber in standard (850nm, 1310nm and 1550nm) and CWDM wavelengths.

The T1/E1 MUX/M features user-selectable local loop-back on both the copper and fiber ports, remote fiber loop-back and circuit test modes. These features facilitate testing of the remote unit, and minimize the need for test equipment and support personnel. Alarm relays and LEDs provide fault notification for loss of power, LOS and AIS.

Configuration of T1/E1 line codes, line build out, loopbacks and circuit test is accomplished via local serial port, Telnet, SNMP, or DIP-switches.

The 1U high iConverter T1/E1 MUX/M chassis can be mounted in a 19-inch or 23-inch rack and features two load-sharing power supplies. It supports hot-swappable universal AC, 24VDC or 48VDC power supplies for power redundancy.

Telecom Application: Mobile Backhaul

The following application shows an example of the iConverter T1/E1 MUX/M used in a hybrid TDM/Ethernet transport network.

A wireless service provider has enhanced their network to support 3G/4G services. The new equipment uses Ethernet for backhaul at the Cell Site, while their existing legacy 2G/2.5G equipment uses TDM (T1) for backhaul.

Using the iConverter T1/E1 MUX/M at the Cell Site, the service provider is able to multiplex up to 16 T1/E1 circuits and one 10/100/1000 Ethernet service on a common fiber link. The fiber carries the multiplexed traffic to a second iConverter T1/E1 MUX/M that is installed at the Base Station Controller (BSC) and Radio Network Controller (RNC). The T1/E1 MUX/M converts the legacy TDM traffic back to T1/E1 interfaces, where it is connected to the TDM network. The MUX also converts the Ethernet traffic back to a 10/100/1000 interface, where it is connected to the provider’s IP network.

Model Type iConverter T1/E1 MUX/M
Protocols (TDM) ANSI: T1.403, T1.102,
AT&T: T62411, ITU: G.703, G.704, G.706,
G.736, G.775, G.823, G.824, G.8261
ETSI: ETS 300 166
Protocols (Ethernet) 10BASE-T, 100BASE-TX, 1000BASE-T
100BASE-FX, 1000BASE-X
Frame Size 10,240 byte frames
Copper Connectors Ethernet: RJ-45
T1/E1: RJ-48
Fiber Connectors
SFP Model:
Dual Fiber Model:
Single-Fiber Model:

Dimensions W: 17.15” x D: 9.0” x H: 1.75”
Weight 7.5 lbs (1 Power Supply)
9.0 lbs (2 Power Supplies)
Compliance UL, CE, FCC Class A, NEBS 3 Compliant
Humidity 5 to 95% (non-condensing)
Altitude -100m to 4000m
AC Power
Input power requirements:
100 to 240VAC 50/60Hz
0.5A @ 120VAC
24VDC Power
Input power requirements: Connector:
18 to 36VDC
1.4A @ 24VDC
3-pin terminal
48VDC Power
Input power requirements: Connector:
36 to 60VDC
0.7A @ 48VDC
3-pin terminal
Operating Standard:
Operating Wide:

0 to 50º C
-40 to 60º C
-40 to 80º C
MTBF (hrs)
16 Ports with Redundant AC or DC Power Supplies

TypeDistanceConnector TypeTx λ [nm]Rx λ [nm]Min. Tx Power [dBm]Max. Tx Power [dBm]Min. Rx Power [dBm]Max. Rx Power [dBm]Min Attenuation (dB)Link Budget [dB]
SFP - - - 2439-0** - - - - - - - -
MM/DF 220/550m 2420-0 2422-0 - 850 850 -10 -4 -17 -3 - 7
SM/DF 12km 2421-1 2423-1 - 1310 1310 -9.5 -3 -19.5 -3 - 10
SM/DF 34km - 2423-2 - 1310 1310 -5 0 -23 -3 3 18
SM/DF 80km - 2423-3 - 1550 1550 -5 0 -23 -3 3 18
SM/DF 110km - 2423-4 - 1550 1550 0 5 -24 -3 8 24
SM/DF 140km - 2423-5 - 1550 1550 2 5 -28 -8 13 30
SM/SF 20km - 2430-1* - 1310 1550 -9.5 -3 -20 -3 - 10.5
SM/SF 20km - 2431-1* - 1550 1310 -9.5 -3 -20 -3 - 10.5
SM/SF 40km - 2430-2* - 1310 1550 -3 0 -20 -3 3 17
SM/SF 40km   2431-2*   1550 1310 -3 0 -20 -3 3 17

* When using single-fiber (SF) media converter models, the Tx wavelength on one end has to match the Rx wavelength on the other.
** Use 1250 Mbps (GigE, FC) SFP.
Consult the factory for other configurations

8220-9 Spare AC Power Supply
8226-9 Spare 24VDC Power Supply
8225-9 Spare 48VDC Power Supply
8485-4 Spare 4-Port T1/E1 MUX Module
9140-3 RJ-48 to Coax Adapter Cable (3 meters)
9142-1 RJ-48 Alarm Breakout Cable
8092-2 23” (wide) Rack Mount Kit

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