CXR AJ 2885P, Руководство пользователя

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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.