Chapter 1 Introduction
1.7.21 FRM220-E1/Data DSU/CSU Converter Card
The FRM220-E1/Data is a single port G.703/704 Fractional E1 DSU/CSU card for the FRM220/220A Series
Platform Media Converter Rack. The converter supports Unframed, PCM31, PCM31+CRC4, PCM30, and
PCM30+CRC4 framing modes. The clock source may be selected internally, recovered from received E1 signal,
externally from the Data port or transparent. The Data port interface utilizes a single Hi-Density 26pin connector.
Cable solutions are provided for RS-530/449, X.21, V.35 and RS-232. The unit can recognize the cable type
attached and automatically self-configure the interface circuits. Choosing from one of two model types, the E1
connection is either unbalanced 75 ohm with two BNC connectors or balanced 120 ohm with one RJ-45 connector.
When the FRM220-E1/Data card is placed in the FRM220 rack with SNMP management, the management can
view the converter card's status, type, version, E1 link status and alarms. The card can be configured to enable or
disable the card, reset the card, set clocking, frame mode, interface type and provide analog or digital diagnostic
loopbacks. A unique feature of the FRM220-E1/Data is the use of a common card design which may either be
inserted in the FRM220-CH01 single slot chassis as a stand-alone modem or as a card when placed in the
FRM220-CH20 In-band managed rack.
Features
• Standalone type, 1 port E1 to Synchronous Data converter.
• Interface connectors, RJ-48C for E1/Data-R, BNCx2 for E1/Data-B.
• E1 settings.
• Line Code HDB3 or AMI.
• Full or Fractional.
• Frame setting, E1(CCS/CAS).
• CRC enable/disable.
• Idle code setting (0x7E or 0xFF).
• Auto generate (AIS) enable, disable setting.
• Timing source setting (Receive E1 recovery, Internal oscillator,
External from Synchronous Data port or transparent).
• Active timeslot number setting (E1 CCS 1-31 or E1 CAS 1-30).
• Base timeslot setting (E1 CCS 1-31, E1 CAS 1-15 or 17-31.)
• Loop Back with integral BERT
• LED indicators
Specifications
G.703 Interface
Connector 1xRJ-45 or 2xBNC (depending on model)
Data rate 2048kb/s
Impedance 75 ohm for unbalanced, 120 ohm for balanc
Framing CCS, CAS, w or w/o CRC4, Unframed
RxSensitivity -43dB (extra Long Haul)
TxPulseAmp. 3.00V p-p (120 ohm); 2.73V p-p (75 ohm)
Line code HDB3 or AMI selectable
Indications LED (PWR, TD/RD act., Test, Signal loss
Sync loss, Alarm, Error)
Data Port HD26 w/cable for V.35, RS530, RS449, X.
or RS232 (software selectable); DCE type
Power (Card supports hot-swapping)
Input Card : 12VDC, Standalone : AC, DC op
Consumption <6W
Dimensions 155 x 88 x 23mm (D x W x H)
Weight 120g
Temperature 0 ~ 50°C (Operating), -10 ~ 70°C (Storage)
Humidity 10 ~ 90% non-condensing
Certification CE, FCC, LVD, RoHS
MTBF 65000 hrs (25°C)
Test Loops (set from console)
E1 Local, Remote and Request Remote Loop back
Data Local, Remote and Request Remote Loop back
BERT Integral 511 pattern generator (set from console)
This product includes the following models:
FRM220-E1/Data-R E1 DSU/CSU Converter Card with RJ-45
FRM220-E1/Data-B E1 DSU/CSU Converter Card with BNC
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