Second Dial Tone Timer - AT&T MERLIN LEGEND Release 4.0 Feature Reference

Feature Reference

Second Dial Tone Timer

At a Glance
Users Affected
Reports Affected
Mode
Telephones
System Programming
MLX Display Labels
Signal
Notify, Send
Notify, Receive
Description
Beginning with Release 3.1, the system manager can now assign a second dial
tone timer to lines and trunks to help prevent toll fraud when your company uses
special services from your telephone service provider (for example, when star
codes are used). Most telephone service providers offer special services that
involve a second dial tone. For example, star codes enable telephone users to
obtain special services provided by the central office (CO). Star codes consist
of a star (*) digit followed by a two- or three-digit number and are typically
dialed before an outgoing call.
After receiving certain digits dialed by a user, the CO may provide a second
dial tone, prompting the user to enter more digits. If this second dial tone is
delayed and the user dials digits before the CO provides the second dial tone,
one of the following problems could occur:
The central office misroutes the call. In this case, the CO misses the
digits dialed before the second dial tone was provided, causing the call
to be misrouted by the CO.
The user places a call to a restricted number, evading Calling
Restrictions and causing toll fraud. In this case, the call is not blocked
because the first digit that is dialed before the CO provides second dial
tone causes the dialed number not to match the restricted number.
Using the second dial tone timer, the system manager can set the time interval
that the CO is expected to provide second dial tone. Once this timer interval is
exceeded, users can dial the remaining digits. If users dial the remaining digits
before the timer interval is exceeded, the MERLIN LEGEND system blocks the
call.
Telephone users, operators
System information
All
All
More
• Options
SecDTDelay Ring
[ ]
Signal Signl
[
Notify,Send Ntfy,Send
[
Notify,Receive Ntfy,Recv
Delay Ring
]
]
Second Dial Tone Timer
513