Information Technology Reference
In-Depth Information
The
vm-integration
command is used to enable voicemail integration with DTMF and analog voicemail systems and enter voicemail
integration mode.
Next, the
pattern direct
,
pattern ext-to-ext
, and
pattern trunk-to-ext
commands are used to configure the DTMF digit pattern
forwarding that is necessary to interact with the voicemail system when
■
The user presses the Messages button on a Cisco IP phone (
pattern direct
).
■
An internal extension tries to connect to another extension, but that extension is busy or there is no answer (
pattern ext-to-
ext
).
■
An external (trunk) caller tries to connect to an internal extension, but that extension is busy or there is no answer (
pattern
trunk-to-ext
).
The
busy
and
no-answer
keywords are used with these commands to dictate the particular circumstance. (The called phone is busy or
there is no answer from the called phone.)
When configuring the
pattern direct
,
pattern ext-to-ext
, or
pattern trunk-to-ext
commands, you must also specify combinations
of alphanumeric strings (fewer than four digits in length), as well as the calling number (
cgn
), called number (
cdn
), or forwarding
number (
fdn
) to be sent to the voicemail system.
Figure 5-1
shows the relationship between the calling number (CGN), called number (CDN), and forwarding number (FDN).
FIguRE 5-1
Relationship Between
CGN, CDN, and FDN
Phone 2
(Ext: 1002)
Busy or No Answer
Phone 1
(Ext: 1001)
Voice Mail
Calling Number
(CGN)
Forwarding Number
(FDN)
Calling Number
(CDN)
