ESI IVX X-Class User's Guide download pdf (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

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.

If using system software version 4.7.0 or later; otherwise, same as Generation I.

1 2 ... 5 6 7 8 9 10 11 12 13 14 15 ... 39 40

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ESI IVX X-Class User's Guide Page 10