Chapter 2 Module and Service Descriptions

Frame Relay Service Modules

Each interface configurable as a single port (FRSM-8T1) or up to 24 ports (FRSM-8T1-C) running at full line rate, at 56 or n x 64 kbps

Bit error rate tester (BERT) and extended loopback pattern generation/verification (with optional SRM)

1:N redundancy within a group of n + 1 FRSM cards on a shelf (with optional SRM)

LOS, OOF, AIS, RAI alarms

Transmitter loop-timed to receiver or synchronized to shelf

Supports up to 1000 virtual connections per card

FRSM for E1 features

The FRSM-8E1 and FRSM-8E1-C each provide eight E1 interfaces for full-duplex communications at up to 2.044 Mbps. Each E1 line consists of an RJ-48 and SMB mini-connector, along with three LED indicators for line status.

The FRSM-8E1 supports fractional and unchannelized E1 port selection on a per-E1 basis. The FRSM-8E1-C allows full DS0 and n x DS0 channelization of the E1s, for a maximum of 248 ports per FRSM-8E1-C.

Key Features include:

Eight E1 (2.048 Mbps +/-50 bps or 32 ppm) lines

HDB3 or AMI line coding

ITU G.704 16-frame multiframe line framing and clear channel E1

Each interface configurable as a single port (FRSM-8E1) or up to 31 ports (FRSM-8E1-C) running at full line rate, at 56 or n x 64 kbps

BERT and extended loopback pattern generation/verification (with optional SRM)

1:N redundancy within a group of n + 1 FRSM cards on a shelf (with optional SRM)

LOS, OOF, AIS, RAI alarms

Transmitter loop-timed to receiver or synchronized to shelf

Supports up to 1000 virtual connections per card

LED Indicators

Table 2-4and Table 2-5describe the FRSM T1/E1 LED faceplate indicators.

Table 2-4 Card Level LED Indicators for the FRSM T1/E1

Type of LED

Color

Meaning

 

 

 

ACT LED

Green

Active

 

 

 

STBY LED

Yellow

Standby

 

 

 

FAIL LED

Red

Fail

 

 

 

 

Cisco MGX 8230 Edge Concentrator Installation and Configuration

2-28

Release 1.1.31, Part Number 78-11215-03 Rev. B0, May 2001

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Cisco Systems MGX 8230 manual Frsm for E1 features, LED Indicators, Act Led, Stby LED