iv Contents
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2. Dedicated EIA RS-232 Networks . . . . . . . . . . . . . . 2-1
CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 2-1
GENERAL INFORMATION . . . . . . . . . . . . . . . . . 2-1
AUDIX REQUIREMENTS FOR DEDICATED RS-232 . . . . . . . . . 2-4
SWITCH (OR CUSTOMER) REQUIREMENTS FOR DEDICATED RS-
232 . . . . . . . . . . . . . . . . . . . . . . . . . 2-5
DATA RATES FOR DEDICATED RS-232 . . . . . . . . . . . . . 2-5
3. Switched EIA RS-232 Networks . . . . . . . . . . . . . . 3-1
CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 3-1
SWITCHED RS-232 USING MODEMS . . . . . . . . . . . . . 3-2
AUDIX System Requirements For Switched RS-232 Using
Modems . . . . . . . . . . . . . . . . . . . . . . 3-4
Switch (or Customer) Requirements For Switched RS-232 Using
Modems . . . . . . . . . . . . . . . . . . . . . . 3-4
Data Rates for Switched RS-232 Using Modems . . . . . . . . . 3-6
SWITCHED RS-232 USING DATA MODULES FOR DCP . . . . . . . 3-7
AUDIX System Requirements for Switched RS-232 Using Data Modules
For DCP . . . . . . . . . . . . . . . . . . . . . . 3-8
Switch (or Customer) Requirements for Switched RS-232 Using Data
Modules for DCP . . . . . . . . . . . . . . . . . . . 3-8
Data Rates for Switched RS-232 Using Data Modules For
DCP . . . . . . . . . . . . . . . . . . . . . . . 3-8
4. DCP Mode 1 Networks — 56 Kbps . . . . . . . . . . . . . 4-1
CONSIDERATIONS . . . . . . . . . . . . . . . . . . . . 4-1
GENERAL INFORMATION . . . . . . . . . . . . . . . . . 4-2
Static Access . . . . . . . . . . . . . . . . . . . . . 4-4
Dynamic Access . . . . . . . . . . . . . . . . . . . . 4-4
AUDIX SYSTEM REQUIREMENTS FOR DCP MODE 1 . . . . . . . . 4-5
SWITCH (OR CUSTOMER) REQUIREMENTS FOR DCP MODE
1 . . . . . . . . . . . . . . . . . . . . . . . . . . 4-6
Static Access Switch Requirements . . . . . . . . . . . . . 4-6
Dynamic Access Switch Requirements . . . . . . . . . . . . 4-7