Chapter 1 Introduction
1.7.26 FRM220-FOM04 4xE1/T1 +100M Ethernet Fiber Optical Multiplexer Card
FRM220-FOM04 is a modular design for 4xE1/T1 + Fast Ethernet multi-service to dual strand fiber PDH multiplexer.
FRM220-FOM04 provides E1/T1 transmission transparently and pure 100Mbps Fast Ethernet simultaneously. The
fiber optic line is based on the SFP technology that allows the flexible use of Multimode or Single mode lines and
enables the support of different wavelengths and distances. The use of bi-directional SFPs maximizes the
utilization of the fiber optic line and results in saving line costs. With SNMP and Web-based management in the
FRM220, the Network administrator can monitor, configure and control the activity of each card in the chassis.
Features
• 4 channels unframed E1/T1
• 10/100Base-TX Ethernet
• Auto MDI/MDIX
• Auto-Negotiation or Force mode
• Supports flow control
• Supports 9K jumbo packets
• Supports Link fault pass through (LFP)
• One clear channel RS232 up to 250Kbps(Async)
• 1+1 fiber protection, less than 50ms
• Supports Digital Diagnostics Monitoring Interface (DDMI)
• AIS on signal loss on E1/T1 and fiber port
• Loopback test on Optical, E1/T1, and RS232 ports
• Supports Dying Gasp
• Supports local or remote In-band management
• Monitor and Configuration status by console port and SNMP m
• Supports Order wire Ear / Microphone port
• Supports On-Line F/W upgrade
Specifications
E1/T1 ports
Framing Unframed (transparent)
Bit Rate E1:2.048 Mb/s , T1: 1.544Mb/s
Line Code E1:AMI/HDB3, T1: AMI/B8ZS
Line Impedance E1: Unbalanced 75 ohms (BNC cable)
E1: Balanced 120 ohms (RJ-45)
T1: Balanced 100 ohms (RJ-45)
Receiver sensitivity Short haul
“Pulse" Amplitude Nominal 2.37V+/-10% for 75 ohms
Nominal 3.00V+/-10% for 120 ohms
“Zero" Amplitude Nominal +/-0.3V
TX Frequency Tracking +/-30 ppm
Internal Timing Crystal Oscillator
Jitter Performance According to ITU-T G.823
Performance monitoring According to ITU-T G.821
Standards ITU-T G.703, G.704, G.706 and G.732
Interface Connectors RJ-45, BNC
Test Loops LLB (Local Loop Back)
RLB (Remote Loop Back)
Ethernet
Interface Type 10/100Base-TX
Connector RJ-45
Standards IEEE 802.3, 802.3u
Duplex modes Full/Half
Indications OP1 Link, OP2 link, E1/T1 Mode/Link/Loopback test, Order wire, LAN Link/Speed.
Power Input AC adapter, 12VDC (or with built-in power in CH20 or CH02M)
Dimensions 88 x 46 x 155mm (DxWxH)
Temperature 0 ~ 60°C (Operating), -10 ~ 70°C (Storage)
Humidity 10 ~ 90% RH (non-condensing)
Certifications CE, FCC, RoHS
This product includes the following models:
FRM220-FOM04 (Fiber Multiplexer Card)
FOM220-FOM04-CH02M (Stand-alone FOM in 2-slot chassis)
anager
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