Specifications

Appendix A
142
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A.16.1 Functional Details
The FRM220A-nE1/ET100 are 5, 8 or 16 E1 port inverse multiplexer cards with built-in Bridge for the
FRM220/220A Series Platform Media Converter Rack. The multiplexers support bundling Unframed E1s using
GFP-F (Generic Framing Procedure-Framed). The clock source may be selected internally or recovered from any
one of the received E1 signals.
Fiber
The Ethernet port utilizes a single RJ-45 connector or SFP for optical fiber, depending on model. The SFP
should meet the data rate for 100Base-FX.
Management
The FRM220-nE1/ET100 has one on-board 6 pole DIP Switch which can be used to configure the device as
'master/slave' and E1 impedance (75 or 120 ohm). When placed in a stand-alone chassis with DB9 console port,
these devices support a text based serial terminal with an easy to use menu system for configuration. When placed
in a managed chassis, the card is configured and monitored through the chassis NMC (network management
controller) via console, Telnet, Web HTTP or SNMP..
1. Stand-alone – DIP settings when placed in CH01. Serial console when placed in CH01M or CH02M.
2. Rack management - When placed in NMC managed rack, all other settings can be overridden by the NMC management.
3. E1/T1 supports in-band management.
A.16.2 Panel
Figure A.16.1 Panel designations of FRM220-nE1/ET100
There are six variations of this media converter. There are 5xE1, 8xE1 and 16xE1 inverse multiplexer models,
each available with either RJ-45 Ethernet (copper) or SFP 100Base-FX (fiber).