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Technical Specifications
312410-A Rev 00
C-3
Table C-1. AN/DC Network Interfaces
Network
Interface Description
Ethernet and
Second Ethernet
Supports the Ethernet and IEEE 802.3 standards that provide LAN
connectivity.
The Ethernet interfaces on an AN/DC include a 10Base-T (UTP) and
an 802.3 AUI (XCVR) port; however, you can use only one port at a
time.
The UTP interface provides unshielded twisted-pair support; the
XCVR interface provides broadband, baseband, fiber, and shielded
twisted-pair support, depending on the transceiver and cabling you
use.
Synchronous Provides WAN connectivity. AN/DC models can have either two
(COM1 and COM2) or three (COM1, COM2, and COM3)
synchronous ports. (The third synchronous interface option is
available on any AN/DC model that this guide describes.)
Each port can operate independently with RS-232, RS-422, RS-449,
V.28, V.35, and X.21 cables. Synchronous capability allows internal or
external clocking.
ISDN BRI Supports an S/T interface (an RJ-45 physical connector). The BRI
provides 2 B channels, and supports full D-channel signaling and call
setup/tear-down as defined in 1988 CCITT (now ITU-T) Q.921 and
Q.931. For more information on ISDN, refer to
Configuring Dial
Services
.
Note that in the United States, an external NT-1 device is required to
provide the U interface to the carrier network.
The ISDN BRI option is available on any AN/DC model. Note that
only one synchronous port, COM2, operates in AN/DC models that
include ISDN BRI support.
Data Collection
Module (DCM)
Gathers RMON statistics. Refer to
Connecting BayStack AN and
ANH Systems to a Network
for information.