Transmission Units E1 Family
E1 FAMILY EOe-1
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10/100Base Ethernet over G.703 Unframed E1
The EOe-1 is a single port access unit for Unframed El service. Two models, one supporting AC (90-250V) and one supporting DC (18-72V), are available. The EOe-1 data channel supports a fixed transmission rate of 2.048Mbps, for a line attenuation of up to 43 dB on twisted pair or coax cable. This provides an approximate operating range up to 2km (using 22AWG). The EOe-1 packs the data channel into the El link using the entire E1 frame. The EOe-1 fully meets all of the El specifications including ITU-T G.703 and G.823. The EOe-1 features diagnostic capabilities for performing local loopback and remote digital loopback. The operator at either end of the line may test both the EOe-1 and the line in the digital loopback mode. The loopback is controlled by a manual switch. A front panel switch generates an internal 511 bit pseudo random test pattern, according to ITU-T, for direct end-to-end integrity testing. The Err indicator flashes for each bit error detected. Two clock source selection provides maximum flexibility in connecting the E1. The E1 link may be clocked from the recovered E1 receive clock, or from the internal oscillator.
Ethernet Specifications Compliance: Connector: Data Rate: Filtering and Forwarding: Delay: Frame Buffer MAC Table
IEEE 802.3/802.3u Shielded RJ-45 10/100Mbps; Half Duplex (20/200Mbps; Full duplex) 90,000 packets/sec 1 frame 340 frames 256 MAC address
Memory configuration detail #1 LAN to WAN 308 packets, WAN to LAN 32 packets #2 LAN to WAN 170 packets, WAN to LAN 170 packets #3 LAN to WAN 32 packets, WAN to LAN 308 packets
Ethernet Features IEE802.3x flow control Automatic address learning Auto-Negotiation
G.703 E1 Specifications E1 LINK Framing Bit rate Line code Line impedance Relative receive level Transmit level Pulse amplitude
Unframed 2.048Mbps AMI HDB3 75 ohm(BNC) 120 ohm(DB-15, RJ-45) 0 to -43dB
Nominal 2.37V ±10% for 75ohm Nominal 3.00V ±10% for 120ohm Zero amplitude ±0.1V Transmit frequency tracking Internal timing ±30 ppm Loopback timing ±50 ppm External timing ±100 ppm Jitter performance According to ITU-T G.823 Complies with ITU-TG.703, G.706 and G.732. Interface connectors BNC(unbalanced) RJ-48(balanced) Clock modes Clock mode 0 (DCE1) Receive and transmit clock (recovered) to the synchronous DTE Clock mode 1 (DCE2) Receive and transmit clock (internal oscillator) to the synchronous DTE
Test switches/Diagnostics Digital local loopback Analog local loopback Digital remote loopback Test pattern
Control signals
CTS constantly ON DSR constantly ON, except during test loops DCD constantly ON or follows RTS,except during signal loss
General Specification Power Supply (model dependant) Voltage Frequency Consumption Fuse
90 ~ 250VAC 18 ~ 72VDC 47 to 63Hz (AC) 20 Watts 0.2A SB for ST-AC
Physical Height: Width: Depth: Weight:
45mm 195mm 255mm 1.5kg
Transmission Units E1 Family
EOe-1
Cont. Specification
Environment Temperature Humidity
0-50°C / 32-122°F 0 to 90% non-condensing
Ordering Information EOe-1/AC EOe-1/DC
EOe-1 with universal AC power input (90~250VAC) EOe-1 with DC power input (18~72VDC)
Application 49