Communication Specifications - Samsung SCX-6345N/XAA Service Manual

System Overview

3.4 Communication Specifications

This section defines the electrical specifications for the SCX-6345N phone line interface.
Please refer to the FAX Behavior Specifications for user interface implementation.
1) Modem Section
LINE CONNECTION: PSTN or PABX (RJ-11)
ITU COMPATIBILITY: Group 3/ECM
MODEM
Speed - Standard
Error Correction Method
Automatic Train down
ITU Compliance
Forced 9600 BPS
COMMUNICATIONS
Initial Setting:
2) Line Interface Section
SCX-6345N Line Interface will be accomplished with DAA technology. This new technology will enable one single
interface option that satisfies communication requirements for all OpCo s
Modular Plug: RJ-11C
- Out Band Signal Level : Guaranteed North American and Europe PTT standard
- DP Dial Mode (direct current 30mA) : 50~300
- DTMF Dial Mode (direct current 20mA) : 50~540
This is a usual connection in U.S.A. and normally middle 2 wires (pin no. 3 and 4 of modular jack/plug) are used for Tip
and Ring.
4 wires connection is also used in the field.
There is no special mechanical structure or switch in a wall jack.
The 1 st wall jack , the 1 st device/phone plugged , is just connected in parallel with another wall jack,
the 2 nd phone coupled in another room.
When users pick up each handset at the same time, they can hear what they are saying each other.
An user normally use a telephone or TAD device connected into Ext. Jack of the fax machine.
This is another normal connection in certain countries like Germany, Italy, France, Sweden, etc. and 4 wires are used.
They call them wire a for Tip, wire b for Ring and wire a , wire b to pass the line path to the next priority phone.
There is a special mechanical structure or switch in a wall jack.
Service Manual
3-16
33,600 BPS
ITU T.30
Yes
V.34
No
-12dBm
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