Cisco Systems 8600 Series AIT-T3 ATM Interworking Trunk T3 Interface Card, Alternate routing

AIT-T3 (ATM Interworking Trunk T3 Interface Card)

The AIT-T3 backcard provides a T3 interface for the AIT (IPX switch) or BTM (IGX switch) ATM.

alternate routing

An automatic rerouting of a failed connection by a node to a new route through the network to maintain service.

AMI (Alternate Mark Inversion)

The line code used for T1 and E1 lines where the “1s” or “marks” on the line alternate between positive polarity and negative polarity.

arbiter

A BPX administration processor that polls each network port to control the data flow in and out of the crosspoint switch matrix.

ARC (Alarm Relay Card)

An alarm front card for the IPX switch.

ARI (Alarm Relay Interface Card)

An alarm interface back card for the IPX and IGX switches.

ARM (Alarm Relay Module)

An alarm front card for the IGX switch.

ASM (Alarm/Status Monitor Cards)

An alarm front card and back card set for the BPX switch.

ATM (Asynchronous Transfer Mode)

Data transmission that uses a very flexible method of carrying information, including voice, data, multimedia, and video between devices on a local or wide area network using 53-byte cells on virtual circuits. The 53 byte cell consists of data and a small header. (See also cell relay.)

ATM Switched Virtual Circuits (SVCs)

A member of the INS product family that uses ATM SVC Server Shelves and software to enhance a Cisco WAN switching network with ATM switched virtual circuits.

ATM SVC Server Shelf

An adjunct processor used in the INS ATM SVC application to enhance traditional Cisco WAN switching networks with ATM switched virtual circuits. The ATM SVC Server Shelf is co-located with and connected to a BPX switch.

auxiliary port

An RS-232 port on the front panel of the SCC card used for connecting a printer or an out-dial modem. This port is a one-way, outgoing port.

B

B3ZS (Bipolar with Three Zero Suppression)

A protocol for T3 lines that converts a channel word with three consecutive zeros into a code which at the far end is converted back to three zeros.

E-2Cisco BPX 8600 Series Reference