Specifications

V.3229 / V.3229L <C#>-25

Asynchronous Operating Commands

DTE Controlled

Fallback Rate

(Pin 23)

*FB

Pin 23 of the EIA-232 DTE connector provides a

signal input to the modem for DTE fallback. If the

modem is not using DTE fallback, set this option to

ignore pin 23. To cause the modem to act on high /

low levels of pin 23, enable this option. Negative

level forces a higher rate for primary data rate; posi-

tive forces a lower rate providing a fallback rate.

*default

Table 12:

Command Operation

*FB Ignore pin 23*

*FB1 Transition on pin 23 changes speed

enera

omman

ont.