Westell Technologies IVX S-Class manual System fixed numbering plan

Administrator programming: An introductionIVX S-Class Administrator’s Manual

System fixed numbering plan
		Numbers					Function
		Generation II			Generation I
	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
		300–4891			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.

A.6