System fixed numbering plan – Westell Technologies IVX S-Class User Manual
Page 10

Administrator programming: An introduction
IVX S-Class Administrator’s Manual
A.6
System fixed numbering plan
Numbers
Generation II
Generation I
Function
0 0
Operator
1–16 1–16
CO
lines
100–131 100–123
Digital
extensions
132–139 124–129
Analog
extensions
199
199
Overhead paging port
290–299 Department
numbers
300–489
1
300–309
Guest/info
mailboxes
500 Broadcast
mailbox
520–529 Cascade
mailboxes
560–580 Feature
codes
590–594 MOH
recordings
600–699 System
speed-dial
Note: If unsure whether your IVX S-Class system is Generation I or Generation II, consult your ESI Reseller.
Alternatively, if you have physical access to the IVX S-Class system cabinet, see whether the text
“Generation II” appears in small lettering on the cover’s label.
1
If using system software version 4.7.0 or later; otherwise, same as Generation I.