Dial plan syntax
Cisco TelePresence ISDN Gateway 2.1 Online help (Printable format) 43 of 135
empty number, the call will be rejected; in
the above example, an incoming call to 55
would result in an empty substitution.
!
This delimiter is only for use in an "ISDN
bridge between IP islands" when you want
to use TCS-4 extensions. In this case use
the ! before TCS-4 extension in the dial
plan for the first ISDN Gateway so that it
is passed to the second ISDN Gateway in
a format recognized as a TCS-4
extension..
A detailed example and further explanation
of TCS-4 is provided in Example dial plan
rules.
!
This is a delimiter that can be used for
telephone calls where there is a number
to dial which must be followed by DTMF
tones.
This feature is for IP to ISDN telephone
calls. It allows you to configure the dial plan
to start sending DTMF tones after a
telephone call has connected. This is
useful if there is a call through the ISDN
Gateway to a device which is perhaps
behind another gateway which only
supports DTMF to decide how to route the
calls. The caller is not required to
additionally enter the DTMF codes
manually on the telephone keypad but
instead can have the call re-routed
automatically using the dial plan of the
ISDN GW.
To do this, when completing the Call this
number field, first type the number to call
then type an exclamation mark (!) and type
the DTMF extension after it.
,
When sending DTMF tones in a telephone
call, a comma indicates a two second
pause. Two commas (,,) indicate a four
second pause. You can insert as many
two second pauses as you want.
Pauses are useful where there are more
than one set of DTMF tones to enter. For
example, if the call is answered by an
automated operator system which requires
that the caller chooses an option from a
menu and is then transferred to an audio
conferencing system (for example) and
then is asked to enter the conference ID.
Refer to the section "Specifying voice-only
IP to ISDN telephone calls" in Example dial
plan rules.