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Protocol. Enveloping Mode
For protocol enveloping mode, the 3708 supports ASCII devices that have the
following characteristics:
• Operate in character mode
• Use either the BIA 232C interface or BIA 422A signaling
• Use 8 bits, which mayor may not include parity
• Use DCI and DC3 as XON and XOFF for pacing
• Are compatible with TWX 33/35.
ASCII Pass-Through Mode
For ASCII pass-through mode, the 3708 supports ASCII devices that have the
following characteristics:
• Operate in character mode
• Use either the BIA 232C interface or BIA 422A signaling
• Use 8 bits, which mayor may not include parity.
Chapter 3. Host and ASCII Device Interfaces
3-5
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