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4E1 over Gigabit Ethernet Multiplexer
The 4E1 tdm over IP can realize 4E1 over 10/100/1000M gigabit ethernet conversion.The uplink have three 10/100/1000M gigabit ethernet and one SFP slot.WEB management,easily used by customer.

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As a cost effective solution for the traditional telecom services migrate to the IP packet networking technology,the 4 E1 over gigabit ethernet multiplexer adopts the innovative TDM over IP technology, it transports the legacy E1 data through the existing Gigabit Ethernet or IP network.
The 4E1 over ethernet multiplexer is the new generation of the TDM over IP equipment with IP circuit emulation that supports transportation of four E1/T1 and two local Ethernet ports over Ethernet or IP network. The uplink ports and user data ports are IEEE 802.3 compliant, 10/100/1000BaseT auto-sensed Ethernet port.
The state-of-the-art design provides the highest availability with the accurate timing signal and data bit stream reconstruction. Predefined system parameter profiles that according to different application requirement; ultimately simplify the installation process and saving the maintenance cost.
Telecom and Enterprise users can save a lot of access and equipment costs and generates new revenue by offering different types of service over existing Ethernet networks. It is also suitable for connecting to the wireless equipment to achieve fast deployment of E1 services. One particular application is to build E1/T1 links with low cost Wireless LAN bridges,replacing much more costly microwave radios. Operators can use BD-4E1-IP-G to provide legacy TDM services over wired or wireless packet network.

 4E1 over Ethernet  


1. User-friendly Web server supported for easy setup and maintenance
2. The TDM over IP device supports unframed structures SAToP protocol and framed structure CESoPSN non CAS protocol.
3. Four E1 Ports supported, E1 easy selected by Web Manager
4. Uplink ports 1+1 backup supported
5. Stable E1 clock recovery, low jitter and wander
6. Low processing delay for E1 channels, high bandwidth usage efficiency
7. Resist to packet loss, with PCM frame synchronization protection
8. User definable encapsulation packet size for different application
9. Enough jitter buffer to resist packet delay variation (PDV)
10. Local Ethernet port throughput limiting, assuring E1 QoS
11. Local and remote E1 LOS and AIS and packet loss indication for trouble-shooting andmaintenance.                      

12.  E1 clock supports 3 mode: local clock, adaptive and loopback

13.   Ethernet built-in layer 2 switch, support VLAN(port based, 802.1Q based and QinQ based), QoS(port based8021.1P basedMAC based and TOS based).

14.  Ethernet support IEEE 802.3x, RSTP (802.1w), LLDP, CDP, Ethernet ring protection, OAM and MAC address automatic learning


Technical Specifications





4 E1s, 3GE electrical ports and 1 GE optical port



3 GE electrical ports and 1 GE optical port
Comply with IEEE 802.3, 802.1Q, 802.1P, 802.3x
Speed and duplex auto-negotiation or manual

E1 Port

4 E1 Supported

Comply with G.703 G.704

Impedance: E1-120Ω or 75Ω



-48V DC or 220V (110V) AC power supply



Working Environment


0~ 50°C

Relative Humidity

90% (non-condensing)

Ordering information

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