Telebyte - Short Haul Modem Selection Chart

Model (note1)	Protocol	Wire or Fiber	Full Duplex & Handshake	Max Speed KBPS	Number of Wires	Number of LED's/ LCD's	Power Source (note2)	Physical Type (note3)
72A	ASYNC	W	No	19.2	4	2	AC	SA
75	ASYNC	W	No	19.2	4	4	DC	RM
77	SYNC	W	Yes	19.2	4	6	DC	RM
79	ASYNC	W	Yes	19.2	4	8	DC	RM
91	SYNC	W	Yes	19.2	4	7	AC	SA
92	SYNC	W	Yes	19.2	4	---	TD/PS	SA
201	ASYNC	W	No	19.2	4	---	TD	SA
203	ASYNC	W	No	19.2	2	---	TD	SA
209F	ASYNC	W	No	19.2	4	---	TD	SA
214A	ASYNC	W	No	38.4	2	1	AC	SA
221	ASYNC	W	No	19.2	4	LCD	TD	SA
224	ASYNC	W	Yes	19.2	4	LCD	AC	SA
225	ASYNC	W	Yes	19.2	4	LCD	TD	SA
226	ASYNC	W	Yes	19.2	4	LCD	TD	SA
227	ASYNC	W	No	115.2	4	LCD	TD	SA
271	ASYNC	F	No	56	2 Fibers	---	AC	SA
272	ASYNC	F	No	2500	2 Fibers	---	AC	SA
274	SYNC/ASYNC	F	Yes	256	1 Fiber	6	AC	SA
276	ASYNC	F	No	1000	2 Fibers	---	AC	SA
277	ASYNC	F	No	1000	2 Fibers	4	AC	SA
278	SLIP/PPP	F	Yes	115.2	2 Fibers	10	AC	SA
420	SYNC	W	Yes	128	4	6	AC	SA
431	SYNC	W	Yes	128	2	6	AC	SA
681	HDSL	W	Yes	128	4	LCD	AC	SA
8361	ASYNC	W	No	115.2	4	2	AC	DIN
8362	ASYNC	W	No	115.2	4	2	AC	DIN

Pick the Modem That's Best for Your Aplication
Notes:
1. All standalone Short Haul Modems except Models 209, 420, 431, 91, and 92 are available with male or female RS-232 connectors.
Please specify M or F when ordering.
Model 209F is a DB9 female connector to match the PC com port of a PC - Specify RJ-11 or Terminal Strip
Model 431 has a DB25 female connector.

2. Power Source: TD = Transmit Data, PS = Power Stealing (takes power from pins 4,5,6,8, or 20), DC = Host Powered, AC = Self Powered (comes with a wall mounted transformer.)

3. Physical: Standalone (SA), Rack Mount (RM), or DIN Rail Mount (DIN)