COMSPHERE 3600 Data Service Units
1-6
December 1996
3610-A2-GB43-50
Table 1-4
V.32 DBM and DBM-V Technical Specifications
Specifications
Criteria
RINGER EQUIVALENCE NUMBER (REN)
DBM option 0.7B
APPROVALS
DOC
Certification (PSTN)
Load Number
230 3684 A
7
APPLICATION
Full- or half-duplex data transmission via analog 2-wire Dial Network
(PSTN), point-to-point
MODULATION AND FREQUENCY
At 12 and 14.4 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
CHANNEL EQUALIZATION
Transmitter
Receiver
Compromise equalizer
Automatic adaptive equalizer
COMMUNICATION LINE
2-wire analog (PSTN) line
DATA RATES
2.4, 4.8, 7.2, 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 or V.34 modem can be
used.
Also, V.22bis at 2.4 kbps can be used.
1
RECEIVE VF INTERFACE
Dynamic Range
V.32 2-wire PSTN
Impedance
– 43 to –10 dBm
600
Ω
SWITCHED NETWORK INTERFACE
3610 DSU
3611 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 PSTN
Impedance
Permissive: – 9 dBm
Programmable: –12 to 0 dBm
600
Ω
1
If a non-3600 Series DBM V.32 modem calls into the DBM with firmware version 2.8 or lower, a manual switch to the
Dial command is required to complete the backup process.
