About Your DSU

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

 

 

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 Model 3550 or 3551 V.32 DBM.

 

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)

230 3684 A

Load Number

7

 

 

RECEIVE VF INTERFACE

 

Dynamic Range

 

V.32 2-wire PSTN

±43 to ±10 dBm

Impedance

600 Ω

 

 

SWITCHED NETWORK INTERFACE

 

3550 DSU

6-pin modular jack

 

Permissive: USOC RJ11C

 

8-pin modular jack

 

Programmable: USOC RJ45S

3551 DSU

(One or two) 50-pin connector

 

Permissive: USOC RJ21X

 

Programmable: USOC RJ27X

 

 

TRANSMIT VF INTERFACE

 

Signal Level

 

V.32 2-wire Dial (PSTN)

Permissive: ±9 dBm

 

Programmable: ±12 to 0 dBm (set by a resistor in the telco jack)

Impedance

600 Ω

 

 

3550-A2-GB20-20

December 1996

1-7

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Paradyne 3551 manual DBM Technical Specifications Criteria, Doc