AT&T DEFINITY 7100 series Manuel d'utilisateur télécharger pdf (Page 103)

PROTOCOLS

Max.

Protocol

Applications

Data

Max.

Rate

Distance

(kbps)

(Feet)

ISDN-PRI Communication Interface

64* 655 (199.3m)

to ISDN Interface

to Network

or Repeater

1310 (399.3m)

PBX to PBX

ISDN-BRI Communication Interface 64*

1000 (304m)

to ISDN Interface

to Network

Note: Data endpoint determines distance limitation.

★

The ISDN PRI sends digitized voice and digital data in T1 frames at a 1.544 Mbps

rate. Each frame consists of twenty-four 64 kbps channels plus 8 kbps for framing.

This represents 23 Bearer (or B) channels plus 1 Data (or D) channel. The maximum

user rate is 64 kbps for voice and data.

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AT&T DEFINITY 7100 series Manuel d'utilisateur Page 103