CXR AJ 2885P Manual de usuario descargar pdf (Pagina 39)

User's Manual V34bis Fax-modem - AJ 2885 P

AJ 2885 P - Page 39

7. Specifications

7.1. Line side characteristics

Mode Switched network 2-wire leased line 4-wire leased line

Receiver sensitivity - 43 dBm - 33 dBm - 26 dBm

Carrier detection:

Open threshold < - 48 dBm < - 38 dBm < - 31 dBm

Close threshold > - 43 dBm > - 33 dBm > -26 dBm

Transmission level:

Nominal - 10 dBm - 14 dBm - 14 dBm

Maximum - 8 dBm 0 dBm 0 dBm

Minimum - 16 dBm - 16 dBm - 16 dBm

AJ2885P (except FTV model) provides transmit levels higher than –10 dBm : it is under user’s

responsibility to avoid these levels on the public network, and use them on private lines only for

special applications. Maximum received level is –10 dBm only : some higher received level may

induce a loss of performance.

Recom-

mendations

Call/Answer Speed Bps Xmit 0 Xmit 1 Received 0 Received 1

V22 bis Call 2400 1200 1200 2400 2400

Answer 2400 2400 2400 1200 1200

V22 Call 1200 1200 1200 2400 2400

Answer 1200 2400 2400 1200 1200

V21 Call 300 1180 980 1850 1650

Answer 300 1850 1650 1180 980

V23 Call 75 450 390 2100 1300

Answer 1200 2100 1300 450 390

V32 9600 1800 Hz

V32 bis 14400 1800 Hz

V34 33600 Adaptive

7.2. Automatic call & answer

7.2.1. Originating

Automatic dialling or calling by the originating modem is initiated by:

• "AT" or V25bis commands

• Push button on front panel

• DTR 108/1 being enabled

• Pulse or tone dialing.

Tone recognition occurs when there is:

• A dial request (public network or private exchange).

• A busy line.

• The call monitoring by the internal high speaker can be disabled.

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CXR AJ 2885P Manual de usuario Pagina 39