AT&T 585-300-903 manual RS-232 Modems Modem Pool

DCP Mode 2 Networks — Modem Pooling 5-9

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	Table 5-1.Tested RS-232 to Rack-Mounted Modem Pool Combinations
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⎜		⎜			RS-232 MODEMS			⎜
⎜		⎜						⎜
______________________________________________________________________________________								⎜
⎜		⎜		⎜		⎜
⎜	MODEM POOL	⎜	424(9600)		2296(9600)		3296(9600)	⎜
				⎜		⎜
⎜		⎜						⎜
	MEMBERS			⎜		⎜
⎜		⎜						⎜
⎜		⎜		⎜		⎜		⎜
				⎜		⎜
⎜	2296(9600)	⎜	OK		OK		OK	⎜
				⎜		⎜
⎜		⎜						⎜
	+ MTDM			⎜		⎜
⎜		⎜						⎜
				⎜		⎜
⎜		⎜						⎜
				⎜		⎜
⎜	2296(9600)	⎜	OK		OK		OK	⎜
				⎜		⎜
⎜	+ 7400A	⎜						⎜
				⎜		⎜
⎜		⎜						⎜
				⎜		⎜
⎜		⎜						⎜
	424		NOTE 4	⎜	NOTE 4	⎜	NOTE 4
⎜		⎜						⎜
				⎜		⎜
⎜	+ 7400A	⎜						⎜
				⎜		⎜
⎜		⎜						⎜
				⎜		⎜
⎜		⎜						⎜
	424		NOTE 5	⎜	NOTE 5	⎜	NOTE 5
⎜		⎜						⎜
⎜	+ MTDM	⎜		⎜		⎜		⎜
⎜		⎜		⎜		⎜		⎜

NOTE 1 — flow control problem. Both the MTDM and the 7400A expect XON/XOFF flow control when running 19.2 Kbps.

NOTE 2 — works but not cost effective (RS232 modems should be running 19200 also).

NOTE 3 — not tested and not cost effective (modems should be running 19.2). Voice messages can emulate XON/XOFF. This results in lost data and dropped connections.

NOTE 4 — not tested because not cost effective (424 not off the shelf compatible with 7400A in a rack mount).

NOTE 5 — not recommended since MTDM is being manufacture discontinued.