e1 is a standard unit used to measure the amount of data flow. 1 e1 refers to 2mbps speed of data flow.
Most likely, the E1 will not interface directly with the base transceiver. The E1 is a 2.048 MHz digitally multiplexed group of 30 E0 (8 KHz voice) channels. The base transceiver requires one or more E0 channels. You need a box in between them ... a multiplex "channel bank", which disassembles the E1 and gives you access to its constituent E0 channels.
In North American a T1 line carries signals at 1.544 Mbps (24 channels at 64Kbps). E1 is the European format for digital transmission. E1 carries signals at 2 Mbps (32 channels at 64Kbps, with 2 channels reserved for signaling and controlling). T1 and E1 lines may be interconnected for international use.
There are 32 timeslots in E1. named frm 0 to 31 in which the first timeslot is used for framing while 16th timeslot is used to carry signalling data
Ethernet over E1 converter (also called E1 network bridge) is to transmit Ethernet data over E1 network (PDH,SDH network etc). The Ethernet port connect to terminal device,computer,Ethernet switch,Ethernet router etc. The device's E1 port connect to mail network(PDH SDH etc).E1 over IP (TDMOIP) is to transmit the E1 data over ethernet IPnetwork. It transports the legacy E1 data through the existing Ethernet or IP network. The typical application is transmit voice and data over wireless radio network.
1E1=2.048MbpsSTM1=63 E1...AND STM4=4*STM1=63*4E1sbUT ITS NOT THAT EASY...In SDH there is a lot of header data...STM1 =155.52MbpsSTM4=622.08MbpsSTM16=2488MbpsSTM64=9953Mbps....
1E1=2.048MbpsSTM1=63 E1...AND STM4=4*STM1=63*4E1sbUT ITS NOT THAT EASY...In SDH there is a lot of header data...STM1 =155.52MbpsSTM4=622.08MbpsSTM16=2488MbpsSTM64=9953Mbps....
Leased lines are basicaly a data link / line, which is dedicated for data transmission between registered end to end network for enterprise users where as, PRI (Primary Rate Interface) is one of the service which is used by ISDN connection .It uses channel wise data transmission between the networks.The Primary Rate Interface consists of 23 B-channels and one 64 Kpbs D-channel using a T-1 line or 30 B-channels and 1 D-channel using an E1 line. Thus, a Primary Rate Interface user on a T-1 line can have up to 1.544 Mbps service or up to 2.048 Mbps service on an E1 line.
The Data rate of one E1 is 2048 bps which have 32 voice channels.And STM is a multiplexing of E1's in SONET we say STM-4 is equal to OC-12 both have same data rates i.e. 622.08 Mbps it support 269 E1's. STM-1 or OC-3 supports 67 E1's data rate (155.52 Mbps).
E-1 the basic data is to communicate the telecom
In sdh radio 63 E1's are there
There are 63 e1's in sdh STM-1 = 63 x E1; STM-4 = 63 x 4 E1; STM-16 = 63 x 16 E1; STM-64 = 63 x 64 E1.