RAD Data comm FCD-X21 Manual do Utilizador descarregar pdf (Página 2)

E1/T1 or Fractional E1/T1 Managed Access Units

FCD-E1L, FCD-T1L

monitored by a dedicated LED

indicator and/or supervision

terminal messages.

• Multiple clock source selection

ensures maximum flexibility for

supporting different applications.

The E1/T1 main link may be timed

from the recovered receive clock,

from an internal oscillator, or from

one of the data ports.

• FCD-E1L and FCD-T1L feature

front panel LEDs to indicate alarms,

E1/T1 signal loss condition and

diagnostic loopback operation. The

rear panel LEDs of the Ethernet

interface modules indicate the LAN

status and activity.

• FCD-E1L and FCD-T1L are

available as standalone units. A rack

mount adapter kit enables

installation of one or two (side by

side) standalone units in a 19" rack

(see Ordering).

USER INTERFACES

• FCD-E1L and FCD-T1L support the

following types of user interfaces:



Serial data interfaces: RS-530,

V.35, X.21, V.24, V.36/RS-449



Ethernet LAN interface modules

with a built-in bridge (IR-ETH,

IR-ETH/Q, IR-ETH/QN) or an IP

router (IR-IP).

• The synchronous data ports can

operate in the following clock

modes:



DCE: FCD-E1L/FCD-T1L

provides both transmit and

receive clocks to the user

equipment, with optional

sampling of the incoming data

with an inverted clock



DTE1: FCD-E1L/FCD-T1L

provides the transmit clock, the

attached user equipment

provides the receive clock



DTE2: the attached user

equipment provides both

transmit and receive clocks.

• When equipped with IR-ETH,

IR-ETH/Q or IR-ETH/QN interface

modules, FCD-E1L and FCD-T1L

transparently connect remote LANs

over E1/T1 links. They filter Ethernet

frames, forwarding only frames that

are destined to the WAN. The

IR-ETH/QN port supports

autonegotiation and VLAN frames.

• FCD-E1L and FCD-T1L equipped

with the IR-IP interface module

operate as IP gateways, forwarding

IP packets that are destined to the

IP network. This prevents broadcast

to the WAN and enables LAN users

to register for IP multicast groups.

• FCD-E1L and FCD-T1L with the

IR-IP interface module also connect

local IP networks to public networks

at full E1/T1 speed, in contrast with

connection over statistical protocols,

such as Frame Relay.

• The IR-ETH/QN port is available

with a 10/100BaseT interface.

Other Ethernet ports are available

with 10BaseT (UTP) or 10Base2

(BNC) interfaces.

MANAGEMENT & MAINTENANCE

• Setup, control and monitoring of

status and diagnostics information

can be activated via:



ASCII terminal connected to the

async control port



SNMP management connected

to the async control port.

• FCD-E1L and FCD-T1L have an

internal SNMP agent and can be

managed by any generic SNMP

station or by the user-friendly,

GUI-based RADview SNMP

network management application.

• FCD-E1L and FCD-T1L support

both dial-in and dial-out modem

connections via the serial

V.24/RS-232 port, by using SLIP

protocol or ASCII terminal

command line interpreter. These

connections can be used for remote

out-of-band configuration and

monitoring, as well as for sending

callout alarm messages.

• 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-E1L) or FDL bits (FCD-T1L).

This allows setup, monitoring and

diagnostics of the remote unit.

Inband access by using spare bits on

TS0 or FDL bits is possible only if

these bits are passed transparently

end-to-end.

APPLICATION

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FCD-E1L, FCD-T1L 1

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