User guide

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Chapter 5 - AT Commands
*!Hn Analog Call Hold-Off Time
Unit: 1 second
Values: n=0 (disable),
n=1-255 (1-255 seconds)
Default: *!H0 (disabled)
When an analog call disconnects a timer will be installed that will hold off incoming analog
calls for the given amount of time (n) for that analog port. Analog calls that are received by
that port while calls are being held off will not be rejected nor will a ring be given. Rather the
analog call will be held in an alerting state until *!Hn times out at which point the call will
begin the normal ringing process. Analog calls originated from that port while the *!Hn timer
is running will abort the timer and the call will go out immediately. This command can be very
useful for certain RAS environments that require at least 1 second to initialize a port after a
call has disconnected (such as Citrix and Novell).