User`s guide

Allworx Server Administrator’s Guide Version 7.6
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www.allworx.com
Revised: 11/22/13
7.1.2 Change the Extension Length on Existing Systems
When switching an existing server with three-digit extensions to four-digit extensions, the
user and system extensions automatically change to four digits. The server adds the
number one to the start of each extension. For example, if a user has the extension
x104, the extension automatically updates to x1104. A system extension of x231
updates to x1231.
Allworx does not recommend switching from four-digit extensions to three-digit
extensions. When switching, the system shortens all extensions to three digits by
removing the first digit (e.g., an extension of x1205 becomes x205). However, this can
lead to conflicts (e.g. x1100 and x2100 would shorten to the same three-digit extension).
Therefore, the system prevents switching from four-digit extensions to three-digit
extensions, if there are any extensions outside the x1100-x1299 range. For sites using a
non-default internal dial plan, verify all extensions are in the x100 – x299 range. For
example, if the site’s extensions are 4xxx – 5xxx, verify all extensions are in the
4100-4299 range to switch to three-digit extensions. If there are extensions outside of
this range and the requirement is to switch from four-digit extensions to three-digit
extensions, change or delete all extensions outside the range.
The following affects phone functions when changing the extension length setting. The
number format to dial is the same but the number of digits changes, depending on
whether extensions are set to three digits or four digits.
In addition to the changes in user and system extensions, the following server
configurations automatically update when changing from three-digit to four-digit
Function Format**
3-digit
Example**
4-digit
Example*
Leave a voicemail 3 + extension 3199 31199
Check voicemail 6 + extension 6199 61199
Call forwarding 45 + extension 45199 451199
Answer alternate extension 7 + extension 7199 71199
** Extensions may vary per system. When using a non-default Internal Dial Plan, consult
the My Allworx Manager Phone Features tab to determine what extensions to use for the
corresponding feature.