Cisco Systems 186, 188 Dial Plan Blocking (In Rule) , 'H' Rule to Support Hot/Warm Line

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Cisco ATA 186 and Cisco ATA 188 Analog Telephone Adaptor Administrator’s Guide (SIP)
OL-3410-01
Chapter5 Parameters and Defa ults
Optional Feature Parameters
Dial Plan Blocking (In Rule)
Dial plan blocking can be used to reduce the occurrences of invalid dialed digits being sent and can
prevent the dialed string of a specified pattern from being sent. By adding dial plan blocking, dialed
digits are discarded after the interdigit timer expires unless one of the specified matching rules is met.
In addition, the default nine-second global interdigit timeout value is also modified with the value specified
in the dial plan blocking command:
In
where n specifies the global interdigit timeout and the valid values are 1-9 and a-z (10-35).
For example, to enter an interdigit timeout of 12 seconds and discard dialed digi ts unless 911 is entered,
you would use the following command:
Ic| 911
Specifying your own interdigit timeout also changes the behavior of the dial plan so that the entire dial
string, rather than being sent at timeout, is sent only as a result of a matching rule or time intended by a
matching rule.
'H' Rule to Support Hot/Warm Line
Hotline/Warmline, also known as Private Line Automatic Ringdown (PLAR), is a line used for priority
telephone service. If the Hotline feature is configured, the CiscoATA immediately dials a pre-configured
number as soon as the handset goes off hook. If the Warmline feature is configured, the CiscoATA dials a
pre-configured number if no digits were entered before the specified timer value expired when the handset
went offhook.
Syntax
Hdnnnn
where d is a delay-in-seconds parameter 0-9,a-z (to support 0 to 35 seconds delay), and nnnn is the
variable-length phone number to call when no digits are e ntered for d seconds after offhook.
•Example 1: H05551212 (Hotline configuration; the Cisco ATA immediately dials 555-1212 when the
handset goes off hook.)
•Example 2: H55551212 (Warmline configuration; the CiscoATA waits for five seconds and dials
555-1212 if no digits were entered when the handset went off hook.)