User guide

System Administrator’s Guide – Release 7.5
______________________________________________________________________________________________
Toll Free 1-866-ALLWORX • 585-421-3850 • www.allworx.com
Revised: April 9, 2013
Page 40
the extension automatically changes to x1104. A system extension of x231 adjusts to
x1231.
Switching back from 4-digit extensions to 3-digit extensions is not recommended. If
the switch is made, all extensions will be shortened to three digits by removing the first
digit (e.g. an extension of x1205 will become x205). However, this can lead to conflicts
(e.g. x1100 and x2100 would shorten to the same 3-digit extension). For this reason,
switching from 4-digit extensions to 3-digit extensions will be prevented if there are any
extensions outside the range of x1100-x1299. For sites using a non-default internal
dial plan, all extensions must be in the range of x100 – x299. For example, if the site’s
extensions are 4xxx – 5xxx, all extensions must be in the range of 4100-4299, in order
to switch to 3-digit extensions. If there are extensions outside of this range but a switch
from 4-digit extensions to 3-digit extensions is desired, all extensions that are outside
the range must be changed or deleted.
The following affects phone functions when the extension length setting is changed.
The format of the number to dial is the same but the number of digits changes,
depending on whether extensions are set to three digits or four digits.
Function Format† 3-digit
Example†
4-digit
Example
1
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
In addition to the changes in user and system extensions, the following server
configurations automatically update when changing the extensions from three digits to
four digits:
• Extension call routes including Internal Caller-ID checking
• Incoming outside line call routes
• DID mappings
• System Speed Dials (the Speed Dial extension doesn’t change but the extension
that is dialed as a result changes)
• Speed Dial PFK (differs from Personal Speed Dial PFK)
1
Extensions may vary per system. If you are using a non-default Internal Dial Plan, consult the
Phone Features tab of the My Allworx Manager page to determine what extensions are being
used for the corresponding feature.