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Parameter Description
t
Set digit timeout to default for current pattern.
- (dash)
Human-readable spacing which is ignored.
(space)
Human-readable spacing which is ignored.
Notes:
Interdigit timeout, or pause: By default, the device allows five (5) seconds between dialed digits. To change
this default, you must insert the p parameter before the point in the match string that you want this
parameter to change.
For example, if you would like a nine (9) second delay after each digit is pressed, then you would need to
enter p9 at the beginning of the pattern matching string. Similarly, if you would like a shorter timeout of
three (3) seconds towards the end of a dial string, you would need to enter p3 before the last entry in the
pattern matching string: …p3r*x.
Examples of Dial Strings
Each parameter in a pattern match string represents a single digit. The only exceptions are parameters
that include a repeat operator. We will illustrate these features by examining several entries in the default
VoIP dial string:
[346]11|*xx|**[1-9]e#r5xp3r*x|p8[1-9]e#r5xp3r*x|#[1-9]e#r5xp3r*x|1010Se#p2r*x|0Se#r5xp2r*x[3469]11
Entries are separated by the pipe “|” character. Each entry represents a possible match to the digits that
someone dials.
The following descriptions explain how some of the entries in the default Dial String behave.
[346]11 indicates to recognize the sequences 311,411, 611 and 911, and send them to the service
provider when complete.
*xx is a string that allows the VoIP Subsystem to recognize and forward feature codes to the service
provider. However, note that by default, feature codes are handled locally, in the VoIP Subsystem.
The VoIP Subsystem refers to this string only if the remote or default feature code parameters are
enabled, or if Passthrough mode is enabled. In those cases, this string must be included in the pattern
matching string, so that the VoIP Subsystem will forward feature codes to the service provider.
**[1-9]e#r5xp3r*x is a string that pertains to VoIP provider area codes. The ** prefix is a signal for the
service provider to forward this call to another VoIP service provider. The three digits following **
constitute the VoIP provider area code. Recognize a string starting with **, and proceeding with any
of the digits 1-9. e# defines # as the terminating character. If someone dials # at any point after the 1-
9, the VoIP Subsystem sends out all digits dialed to that point to the service provider. If the person
doesn’t dial a #, collect five more digits (r5x), switch from the default inter-digit timeout of five (5)
seconds to a shorter inter-digit timeout of three (3) seconds (p3), and continue collecting digits until a
timeout occurs (r*x). This string will be forwarded only if the VoIP Subsystem is in Passthrough mode.
p8[1-9]e#r5xp3r*x is the workhorse string of the default pattern for dialing. It matches dialing for VoIP
calls, and for local dialing in most countries. It also matches dialing for domestic long distance dialing
under the North American dial plan. This string is identical to the preceding string, except for the first
two characters. Where the preceding string calls for a match to the prefix **, this string redefines the
inter-digit timeout. This value has been increased to eight (8) seconds. This timeout value persists
until the first digit plus five other digits have been collected, at which time the timeout value is reduced
to three (3) seconds. From that point onward, the VoIP Subsystem continues to collect digits until the
user pauses three seconds, at which point the VoIP Subsystem sends the dialed string to the service
provider.
Chapter 8: Subscription Services 39