ERM-01

19" Rackmount, 2Mbps, G.703 E1 Converter Chassis

Features

• Each Card has 1 G.703 Port and 1 DTE Port
• Range of DTE Ports - X.21, V.35, 10BaseT, etc
• Convert upto 13 G.703 interfaces from 1 chassis
• Supports clear channel 2Mbps and n x 64Kbps
• Extensive test features
• Redundant Power Supply Option
• SNMP Management Option

In Detail

The ERM-01 19" Rackmount chassis is 4U high and supports up to 13 fractional G.703 E1 cards. Each card has a single fractional G.703 port (either 75 Ohm BNC or 120 Ohm twisted pair) and a choice of a DTE port (X.21, V.35, 10BaseT, RS530, and RS449). Ideally suited for environments where a number of 2Mbps G.703 E1 circuits terminate and these need to connect to various other DTE interfaces.

The ERM-01 can be powered by either an AC or DV power supply and there is an additional slot for a second power supply providing redundancy. All the cards for the ERM-01 are hot swappable reducing costly network downtime.

The ERM-01 meets all E1 specifications including G.703, G.704, G.706, G.732 and G.823.

The ERM-01 features V.54 diagnostic capabilities for performing local loopback and digital loopbacks. The operator at either end of the line may test both the ETU-01 and the line in the digital loopback mode. The loopback is controlled by either a manual switch or by the DTE interface for V.35 and RS530.

The ERM-01 has a built in Bit Error Rate Tester (BERT). This BERT can be operated via a front panel switch that activates an internal 511 bit pseudo random test pattern, according to ITU (CCITT), for direct end to end integrity testing. The 'Err' indicator flashes for each bit error detected.

Multiple clock sources

Multiple clock source selection provides maximum flexibility in connecting both the G.703 / G.704 E1 interface and the user data interface. The E1 link may be clocked from the recovered receive clock, from the user data interface, or from an internal oscillator.

Lanode, in partnership with CTC Union Technologies