ZETRON 748, Technical Manual

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Operation
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not a 1+ or 0+ call, it checks to see if the prefix is in the table. The table is enforced if the user
(radio)
Toll restrict type is anything other than None.
Ten digit local calls
As more area codes are put into use throughout North America, some local calls now require an area
code ahead of the phone number. A 1+ or 0+ is not required to place these calls. To support these
types of calls, four
Local area code prefixes can be defined. If a mobile places a call that does not
begin with a 1+ or 0+, these prefixes are scanned for a match on the first three digits. If a match is
found, then 10 digits are required for the phone number and it is considered a local call.
0+ Calls
A 0+ call is a toll call where the billing is directed to a third party. The most common method works
by dialing a calling card number when prompted after the completion of the phone number. The
typical number of calling card digits is 14 (default). Once a 0+ call has been started, the phone
number (8 or 11 digits) plus the calling card number (14 digits) must be dialed BEFORE the call can
proceed. Once the phone number has been dialed, the mobile has 20 seconds to start dialing the
calling card number. To prevent someone from monitoring the calling card number dialed, no beeps
or DTMF is regenerated over the channel. Once the first digit of the number has been entered, the
normal
DTMF time out takes affect for interdigit timing. This allows for the Model 748 to have a
way out if the mobile goes away during dialing. To terminate early (less than 14 digits) the entry of
calling card digits, enter a DTMF “*” any time after the phone number has been dialed.
Provider ID Codes
With the proliferation of local and long distance service providers in North America, the need to
select a specific provider can arise. The ability to dial a Provider Identity Code or PIC code ahead of
a number is supported. The format of a PIC code is as follows:
10nnn
101nnn
Where N = 2-9
For instance to get AT&T you would dial 10288 (10ATT) + 0 + the phone number. PIC codes are
regenerated as they are dialed and not considered part of the phone number. The Model 748 does not
care what phone number is dialed after a PIC code, but does enforce the programmed toll restriction.
Note that PIC codes are not included in the SMDR record, only the phone number dialed.
General features
Functions which are common to all toll restrict plans include, Emergency prefix, Toll free prefixes
and PSTN feature code.
Emergency Prefix
The Model 748 supports a user defined Emergency Prefix code. An emergency prefix is a 3 digit
prefix that is used to access emergency services. The default prefix is “999”. These can be disabled
by clearing the prefix string in programming. When decoded by the Model 748, dial in is
immediately terminated and mobile to phone audio is enabled. The
Call limit and Mobile activity