AT&T DEFINITY 7100 series Bedienungsanleitung PDF herunterladen (Seite 85)

PORT CIRCUIT PACKS

Digital Service (DS1) Converter TN574

(G3rV2)

The TN574 in a port network terminates communication carried

across a T1 facility from another port network. The TN574 can ter-

minate from one to four full-duplex links. The TN574s installed in

two port networks allow the communication distance to be 100

miles (station-to-station) between them.

DS1 Interface TN767B

Allows DS1 and ISDN-PRI signaling to be remoted over DS1 facili-

ties. It also allows the ISDN-PRI signaling to be carried on any of

the 24 trunk ports between the TDM bus and the DS1 facility. It

performs robbed-bit signaling using CO, TIE, DID, and OPS signal-

ing protocol in any remaining ports.

DS1 Tie Trunk TN722B

Provides connections to a 1.544 Mbps DS1 facility as 24, indepen-

dent trunks. Each trunk transmits data of 64 kbps. The TN722B

provides three types of digital tie trunk interface:

●

Voice-grade DS1

Alternate Voice/Data (AVD) DS1 tie trunks

Digital-Multiplexed Interface (DMI)

It also provides bit-oriented signaling in the following trunks:

automatic, immediate-start, delay-dial, and release-link.

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AT&T DEFINITY 7100 series Bedienungsanleitung Seite 85