E1 TO ETHERNET CONVERSION

[Maruthi A]

Help me to know What exactly E1 and How it differs from Ethernet and also how we can convert E1 to Ethernet 

[Richard Burts]

It is not clear what the environment is of your question, which is quite broad. If we knew more we might be able to give better responses. But based on your question I would say that E1 is a serial data communications protocol, which is similar to the T1 technology, and these technologies were historically used as the technology for Wide Area Networking (WAN). In recent times other technologies have been used for WAN.

Strictly speaking you can not "convert" an E1 to Ethernet. You could "connect" an E1 to Ethernet and transmit the data received on E1 to Ethernet. 

[Maruthi A]

Help me by specifying Cisco E1 to Ethernet Converters

[Leo Laohoo]

E1 as in E1 telco circuit?

T1 is American/North American standard while E1 is the European standard of a T1.

[Maruthi A]

Difference between e1 and Ethernet

[balaji.bandi]

we have addressed other post already.

E1 is term used in Telecom industry delivery voice channels

Ethernet term used in the network arena.

You find good references in the internet - IEEE standard information 

Note : you are posting in the wrong forum  - this community feedback related community site (not related to discussed IEEE standards)

[M02@rt37]

Refer here:

https://community.cisco.com/t5/members-and-recognition-discussions/e1-to-ethernet-conversion/m-p/4911090#M96

[Maruthi A]

Help me to know about Unframed, Framed & Multi-Frame concepts related to E1 

[M02@rt37]

Hello @Maruthi A,

These concepts related to E1 circuits !

An unframed E1 signal is a continuous stream of bits without any added framing structure. It consists of 32 timeslots, each carrying 8 bits of data, resulting in a total of 256 bits per frame. Unframed E1 is primarily used for testing purposes and is not commonly used in production networks. It lacks the synchronization and framing necessary for accurate data transmission.

A framed E1 signal includes a framing structure that divides the stream of bits into frames, allowing for synchronization and proper organization of data. The most common framing structure used in E1 is called "G.704" or "CRC-4" framing. In this structure, the 256 bits of each frame are divided into 32 timeslots, and one of these timeslots is reserved for the CRC-4 error-checking code. The CRC-4 code helps detect errors in the received frame, improving the reliability of data transmission.

A multi-frame E1 structure extends the framing concept to include multiple frames grouped together into a larger structure. This grouping of frames enhances synchronization and provides additional features. One common type of multi-frame structure is the "G.703" multi-frame. This structure is commonly used in telephony networks and signaling systems.

http://telecom-transmission.blogspot.com/2013/03/2-mbps-frame-format.html?m=1

[Maruthi A]

Help me to know What exactly E1 and How it differs from Ethernet and also how we can convert E1 to Ethernet 

[balaji.bandi]

E1 is the European equivalent of T1; a common carrier-provided point-to-point digital line service used in private data networks and cellular, Wi-Fi and fixed-network backhaul. An E1 delivers 2.048 Mbps capacity that can be split into multiple 64 Kbps channels, and is typically charged by distance.

how we can convert E1 to Ethernet 

there are converters available internet different vendors, so google the same you get many vendors offers this converters - so buy based on the requirement or contact SME to support you.

[M02@rt37]

Hello @Maruthi A,

E1, also known as E-carrier level 1, is a digital transmission format that was developed for carrying voice and data over traditional telephone lines. It is widely used in Europe and other parts of the world. E1 consists of 32 time slots, each transmitting at 64 kbps, providing a total aggregate data rate of 2.048 Mbps. E1 lines were originally designed for voice communication but are also used for data transmission.

The E1 cable typically uses a four-wire connection, and the pins are often referred to as E1 RJ45 pinout. The most common E1 RJ45 pinout configuration for a straight-through cable is as follows:

• Pin 1: Transmit Data Positive (Tx+)
• Pin 2: Transmit Data Negative (Tx-)
• Pin 4: Receive Data Positive (Rx+)
• Pin 5: Receive Data Negative (Rx-)

If you have a requirement to convert E1 to Ethernet, you can use a device called an "E1 to Ethernet converter" or "E1 over IP converter." This device takes the E1 signal and encapsulates it in Ethernet frames, allowing it to be transmitted over Ethernet networks. On the receiving end, the Ethernet frames are decapsulated, and the original E1 signal is extracted.

[Maruthi A]

Thank You.

[M02@rt37 · Accepted solution]

@Maruthi A,

E1 and Ethernet are both types of digital communication technologies, but they serve different purposes, have different characteristics, and operate at different levels of the OSI model.

E1 (also known as E-carrier level 1) is a digital transmission format that is widely used in telecommunications networks to carry voice and data traffic. E1 lines consist of 32 time slots, each transmitting 64 kbps, resulting in a total capacity of 2.048 Mbps. E1 lines are often used for leased lines, backhaul connections, and providing connectivity to traditional telephony equipment.

E1 lines are commonly used in older telecommunication networks, and they are still widely used in certain regions and applications, especially where legacy infrastructure is prevalent.

Ethernet, on the other hand, is a family of networking technologies that define how data packets are formatted, addressed, transmitted, received, and controlled over a physical network. Ethernet is used for local area networks (LANs) and wide area networks (WANs), providing the foundation for internet connectivity and modern data communication.

Ethernet operates at various speeds, such as 10 Mbps, 100 Mbps, 1 Gbps (Gigabit Ethernet), 10 Gbps, 100 Gbps, and even higher. It uses frames to encapsulate data, and it supports various topologies like star, ring, and mesh.

To convert E1 to Ethernet, you'll need a device called an "E1 to Ethernet converter" or "E1 to Ethernet bridge." This device takes the digital E1 signal and encapsulates it into Ethernet frames so that it can be transported over Ethernet-based networks.

[Joseph W. Doherty]

Re: "Help me to know What exactly E1"

https://en.m.wikipedia.org/wiki/E-carrier

(Often Wiki is a good place to start.)

Re: "How it differs from Ethernet"

That's a very broad question!

All the differences might be a rather long list and possibly presupposes you understand the meaning of those differences and also excludes where the two are alike.  In these forums, we generally answer questions much more limited in scope.

Re: "how we can convert E1 to Ethernet"

For what purpose?

Assuming you have in mind transferring datagrams, most often we would use a router for the media conversion, but using a TelCo network, brings with it many considerations (somewhat like L2 vs. L3 increased considerations), not seen in a lab with two routers, back-to-back, using V.35 serial port connections.