E1/T1 over Fiber
The FRM220-E1/T1 is a fiber media transport for G.703 E1/T1 transmissions designed for point-to-point use. The BNC model provides unbalanced 75 Ohm coaxial E1 connections while the RJ-45 model provides switchable balanced 120 Ohm E1 or 100 Ohm T1 connections over twisted pair wiring. When the FRM220-E1/T1 card is placed in the FRM220 rack with in-band management, the card status, type, version, fiber link status, E1 or T1 link status and alarms for both local card and remote unit can all be displayed. When set for E1 mode, the FRM220-E1/T1 also supports fractional (structured) E1 when connected to a remote FRM220-Data, synchronous data communications converter. In an E1 transmission network where end connection requires synchronous data communication such as V.35 or RS-530 (X.21, RS-449), these units eliminate the need for an extra CSU/DSU. When placed in a single slot chassis and used standalone without management, the card may be configured by DIP switches.
- FRM220-E1R & FRM220-E1B
- RJ-45 (USOC RJ48C) or BNC (coaxial) to fiber converter
- Supports HDB3 or AMI Line coding
- Supports Nx64k connection to FRM220-DATA FRM220-T1
- RJ-45 (USOC RJ48C) to fiber converter
- Supports B8ZS or AMI Line coding
- Supports unframed to FRM220-DATA Common Features
- In-band management via terminal, web, SNMP when in managed FRM220 chassis
- Electrical and optical loop back tests
- Standalone RS232 console (when placed in CH01M)
In-band Managed PDH Fiber Modem
