Transition Networks E1 converter

T1/E1/J1 + 10/100 Ethernet over fibre media converter

  • Managed T1/E1/J1 mux media converter modulethat provides a solution for those users that need to extend multiple T1/E1/J1 connections, along with a 10/100 Ethernet connection, allover fibre.
  • Includes (4) RJ-48 ports, (1) 10/100 Ethernet port, and (1) fibre port.
  • The device is available in versions that support fixed fibre connectors as well as SFP fibre modules offering support for a variety of fibre types, distances, and wavelengths to provide maximum flexibility across a variety of network topologies.
  • CWDM SFPs can also be utilized to further increase the bandwidth capacity of the fibre infrastructure. 
  • C6120 converter must be used in pairs.
  • Typical installation will include a modular card installed in a managed ION chassis linked over fibre to a stand-alone S6120 in a remote location.


Spec Text

ANSI T1.102
T1.403; T1.408
ITU I.431
ETSI 300-166;ETSI 300-233
TBR 12/13
AT&T Pub 62411
IEEE 802.3™-2008

Data Rate

Copper ports (RJ-48): T1(J1) = 1.544Mb/s,
E1 = 2.048Mb/s
Ethernet port (RJ-45): 10/100Mbps
SFP port(s) (empty): 100Base-X/OC-3


Numerous switch settings for line coding, line build out, loopback and AIS

Status LEDs

Power, Port Status, Loopback and AIS


Width: 1.72” [44 mm]
Depth: 6.5” [165 mm]
Height: 3.4” [86 mm]

Power Consumption

6 Watts (max: dual fibre model)
5.5 Watts (max: single fibre model)


Environment specs are dependent on the chassis chosen
Operating: 0°C to 50°C
Humidity: 5% to 95% (non-condensing)
Altitude: 0 – 10,000 ft.


1 lb. [0.45 kg]


EN55022 Class A, EN55024, CE mark



Ordering Information

Order Code Description
TN-C6120-1014 1310nm single mode (SC) [20 km/12.4 mi.]to (4) RJ-48 [1.5 km/0.9 10/100Base-TX (RJ-45)
TN-C6120-1040 1 SFP port to (4) RJ-48 [1.5 km/0.9 mi.] plus 10/100Base-TX (RJ-45)

More Information