Big on features with all the things you'd find in those in big companies including hunt groups, auto-attendant (press 1 for sales, 2 for accounts...etc), voicemail to email, fax to email, call recording, and many more. All these are available with no recurring licensing fees whatsoever! All updates are available free of charge.
The UCM 6100 phone system is a full featured business phone system with the type of features normally found in enterprise level systems. The difference here is the price! There are no licence fees for features such as voicemail and call recording, no costs for software upgrades and it doesn't require specialist telephone cabling!
GS Wave, Grandstreams mobile app, lets you keep in touch on the move. Take deskphone calls, make and receive video calls, instant messaging with colleagues.
GS Wave is available for Android and iOS clients (iPhone and iPad)