Specifications

Appendix A

Appendix A. FRM220A Cards Options

A.0 Introduction

The FRM220A In-Band Managed Media Converter Chassis is designed to accept a variety of optical to

electrical or optical to optical converter cards. As cards are added, this section will be updated with the relevant

information for the new cards. The management interface and all cards support software upgrading so that new

cards and new features may be added at any future date. Please refer to Chapters 2&3 for details on the upgrade

method and procedures for operating the FRM220A GSW/SNMP.

A.1 FRM220A-iMUX In-band Managed Inverse Multiplexer

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. The Ethernet port utilizes a single RJ-45 connector or SFP for optical fiber,

depending on model. One single model supports either unbalanced 75 ohm or balanced 120 ohm (adapter cables

required). When the FRM220A-nE1/ET100 card is placed in the FRM220A rack with GSW/SNMP management, the

management can view the converter card's status, type, version, Ethernet link status and alarms. The card can be

configured to enable or disable the port, reset the card, set clocking, Ethernet mode and provide E1 analog

diagnostic loopbacks. A unique feature of the FRM220A-nE1/ET100 is the use of a common card design which

may either be inserted in an appropriate single or dual slot chassis as a stand-alone modem or as a card when

placed in the FRM220A-CH20 In-band managed rack.

Features

• Standalone type Ethernet to 5, 8, or 16 port E1 converter.

• Uplinks 100M Ethernet to aggregate trunk card of FRM220A

• Interface connectors, RJ-48C for 120Ω , BNCx2 for 75Ω per channel.

• E1s are bundled according to standard GFP-F

• LCAS (Link Capacity Adjustment Scheme) supports dynamic

bandwidth of virtual concatenated containers.

• E1 settings.

• E1 loopback (per channel)

• 75 or 120 ohm impedance

• Timing source setting (Any receive E1 recovery or internal oscillator).

• Embedded Operations Channel (EOC) for remote in-band management.

• Integrated BERT function

• RMON counter for LAN Tx/Rx byte count.

• VLAN tag support

• Bandwidth control (32K to 100M)

• LED indicators