3com MSR 20 Manual Do Utilizador
FIC-1AE3
185
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For an ISDN U interface line, adapt the interface with an NT1 by inserting one
end of the S/T interface cable into the S/T port on the NT1 and the other end to
the BRI port on the FIC-4BSE.
end of the S/T interface cable into the S/T port on the NT1 and the other end to
the BRI port on the FIC-4BSE.
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For an ISDN S/T interface line, directly connect the cable to the BRI port on the
FIC-4BSE.
FIC-4BSE.
FIC-1AE3
Introduction
FIC-1AE3, the 1-port 34 Mbps ATM-E3 interface card, provides these functions:
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Two ATM cell mapping modes: ATM direct mapping (ADM) and physical layer
convergence protocol (PLCP).
convergence protocol (PLCP).
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Scrambling in data transmission.
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Line clock (when working as DTE interface) and internal clock (when working
as DCE interface).
as DCE interface).
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Four types of test measures: local cell loopback, local loopback, remote payload
loopback, and remote line loopback.
loopback, and remote line loopback.
n
You may equip your router with FIC-1AE3 cards to its full capacity. Yet, you are
recommended to install only one FIC-1AE3 on it, whatever its model is, to ensure
performance of some key services.
recommended to install only one FIC-1AE3 on it, whatever its model is, to ensure
performance of some key services.
Interface Attributes
The following table describes the interface attributes of the FIC-1AE3.
Interface LEDs
The following figure illustrates the FIC-1AE3 panel:
Figure 227 FIC-1AE3 panel
The following table describes the LEDs on the FIC-1AE3 panel.
Table 129 Interface attributes of the FIC-1AE3
Attribute FIC-1AE3
Connector SMB
Number of connectors
2
Interface standard
G.703, G.751, G.832, G.823
Interface rate
34.368 Mbps
Interface cable
E3/T3 cable (75-ohm coaxial cables)
Supported services
ATM traffic CBR (constant bit rate), rt_VBR
(variable bit rate-real time), nrt_VBR
(variable bit rate-non real time), UBR
(unspecified bit rate)
(variable bit rate-real time), nrt_VBR
(variable bit rate-non real time), UBR
(unspecified bit rate)