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COMSPHERE DualFlow Data Service Units
1-6 December 1996 3615-A2-GB20-20
Table 1-3
V.32 DBM Technical Specifications
Specifications Criteria
RINGER EQUIVALENCE NUMBER (REN) DBM option 0.7B
APPLICATION Full- or half-duplex data transmission via analog 2-wire dial network,
point-to-point
MODULATION AND FREQUENCY At 14.4 and 12 kbps: CCITT V.32bis, 1800 Hz
At 4.8 and 9.6 kbps: CCITT V.32, 1800 Hz
At 2.4 kbps: CCITT V.22bis, 2400 Hz
COMMUNICATION LINE 2-wire analog (PSTN) line
PORT RATES Async or Sync rates: 14.4, 12.0, 9.6, 9.2, 8.4, 7.2, 4.8, 4.4, 4.0, 2.4, 2.0,
and 1.2 kbps
Other asynchronous rates (e.g., 150, 300, 600, and 1800 bps) can be
obtained through oversampling
Asynchronous rates support CCITT V.14 extended rate range at
8 to 12 bits per character
, including the
start
and
stop
bit (+2.3, –2.5
percent overspeed/underspeed compensation at 10 bits per character)
DATA RATES 2.4, 4.8, 9.6, 12, 14.4 kbps
DBM COMPATIBILITY If Call Setup is set for Callback or Password security, then the device is
compatible with a 3600 Series V.32 DBM only.
If Call Setup is set for Alarm or None, then
any
V.32 modem can be
used.
Also, V.22bis at 2.4 kbps can be used.
APPROVALS
DOC
Certification (PSTN)
Load Number
230 3684 A
7
RECEIVE VF INTERFACE
Dynamic Range
V.32 2-wire PSTN
Impedance
–
43 to
–10 dBm
600
Ω
SWITCHED NETWORK INTERFACE
3615 DualFlow DSU
3616 DualFlow DSU
6-pin modular jack
Permissive: USOC RJ11C
8-pin modular jack
Programmable: USOC RJ45S
(One or two) 50-pin connector
Permissive: USOC RJ21X
Programmable: USOC RJ27X
TRANSMIT VF INTERFACE
Signal Level
V.32 2-wire Dial (PSTN)
Impedance
Permissive: –9 dBm
Programmable:
–12 to
0 dBm (set by a resistor in the telco jack)
600
Ω