The IP Office 406 supports up to 180 extensions. The
system has no extensions as standard, up to 6
expansion modules can added for extensions.
The IP Office 406 base unit for growing small or
midsize offices offers all of the 403 features with
twice the lines and expansion module capacity but
does not have the integral digital/analogue
extension ports. With six expansion modules, total
capacity equals 180 analogue and digital extensions
and up to 60 digital trunks.
The IP Office 406 supports :
Up to 180 analogue and/or digital extensions (6
expansion modules)
2 variants :
ISDN30 line only: Max 2 x (30 channels) = 60
lines.
ISDN2 only: Max 2 x 4 circuit of ISDN2 = 16
lines.