This is a fairly old, though reliable system which, in its basic form, supports up to 8 analogue lines and 24 digital extensions. It can be expanded up to 120 ports, these being a combination of lines and/or extensions.
This system is only available refurbished.
Analogue extensions can be added by means of an Analogue Terminal Adaptor (ATA) - see options.
Please note this system does not support the T7000 Norstar/BCM phone