RAD Data comm FCD-X21 Instrukcja Użytkownika Pobierz pdf (Strona 3)

FCD-E1LC, FCD-T1L

C

Managed E1/T1 or Fractional E1/T1 Access Uni

t

• Inband management can be

performed either via a dedicated

timeslot with the standard Frame

Relay (RFC 1490), or by using the

spare bits (Sa bits) on Timeslot 0

(FCD-E1LC) or FDL bits

(FCD-T1LC). This allows setup,

monitoring and diagnostics of the

remote unit. If spare bits on TS0

or FDL are used for inband access,

they must be passed transparently

end-to-end.

• Maintenance capabilities include

user-activated local and remote

loopbacks on the E1/T1 main link,

sublink, and data ports. The user

can activate a BER test on the

main link. Also, the main link

responds to an ANSI FT1 RDL

(T1E1.2/93-003) inband loop

code, or a user-configured pattern

generated by a remote FCD-E1LC,

FCD-T1LC, or DXC in a specific

bundle of timeslots allocated only

to that port. The user can also

define BER or inband tests to run

on any timeslot.

• E1 network statistics are stored in

memory, according to RFC 1406.

Statistical information can be

retrieved locally through the

control port.

• T1 network statistics are stored in

memory, according to ANSI and

AT&T standards. The statistical

information may be retrieved by

the service provider (ANSI only) or

locally through the control port.

SPECIFICATIONS

E1 MAIN LINK AND SUBLINK

• Framing



256N (no MF, CCS)



256N (no MF, CCS) with CRC-4



256S (TS16 MF, CAS)



256S (TS16 MF, CAS) with

CRC-4



Unframed

• Bit Rate

2.048 Mbps

• Line Code

AMI

• Zero Suppression

HDB3

• Line Impedance



120Ω, balanced



75Ω, unbalanced

• Transmit Timing

Locked to the system clock

• Signal Level



Receive:

0 to –10 dB without LTU

0 to –36 dB with LTU



Transmit:

±3V (±10%), balanced

±2.37V (±10%), unbalanced

• Jitter Performance

As per ITU G.823, ETSI TBR-12

and TBR-13

• Connectors



RJ-45, 8-pin, balanced



Two BNC coaxial, unbalanced,

using adaptor cable (see

Ordering)

• Compliance

ITU G.703, G.704, G.706, G.732,

G.823, G.826

• Performance Monitoring



Local support of CRC-4



Full statistical diagnostics

according to RFC-1406

T1 MAIN LINK AND SUBLINK

• Framing



D4



ESF



Unframed (main link only)

• Bit Rate

1.544 Mbps

• Line Code

AMI

• Zero Suppression

Transparent, B7ZS, B8ZS

• Line Impedance

100Ω, balanced

• Transmit Timing

Locked to the system clock

• Signal Level



Receive:

0 to –10 dB without CSU

0 to –36 dB with CSU



Transmit:

0, –7.5, –15, –22.5 dB with CSU

±3V,±10% soft adjustable at

0 to 655 ft without CSU

• T1 Jitter Performance

As per AT&T TR-62411

• Connector

RJ-45, 8-pin, balanced

• Compliance

AT&T TR-62411, AT&T 54016,

AT&T TR-62421, ANSI T1.403

• Performance Monitoring



Local support of ESF diagnostics

according to AT&T PUB 54016



Full statistical diagnostics

according to ANSI T1.403-198

DATA PORTS

• Connectors



D-type 25-pin RS-530, female.

Adaptor cables convert port to:



V.35



X.21



V.36/RS-449

• Data Rate

n × 56/64 kbps (n=1to 24) for T1

n × 64 kbps (n=1to 31) for E1

• Clock Modes

DCE: RX and TX clock to user

device

DTE1: RX clock to user device;

TX clock from user device

(not for X.21)

DTE2: RX and TX clock from user

device (not for X.21)

• Control Signals



CTS follows RTS or constantly

ON, soft-selectable



DSR constantly ON, unless in

test mode



DCD constantly ON, unless in

sync loss

ETHERNET BRIDGE PORT

• Interface Connector

10/100BaseT (UTP) with shielded

RJ-45

• Maximum Frame Length

1536 bytes

1 2 3 4

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