All four phones have the following features in common: call control using SIP to permit interoperability with a broad range of SIP products, full duplex speaker phone that has excellent speech quality using a custom designed acoustic chamber for the speaker and advanced acoustic echo cancellation and a patented jitter buffer to assure the highest quality when talking over the Internet.
The ZIP 4x4L and the ZIP 4x5L have graphical monochrome LCDs. The ZIP 4x4B and ZIP 4x5B have graphical colour LCDs, a USB port, and Bluetooth to support wireless headsets and the BTC conference phone that Zultys previously released.
Zultys say the ZIP 4x4L is designed for business owners that want a fully functional phone for the office. The ZIP 4x5L is designed for the remote worker because it includes a complete router with VPN, NAT, firewall, and DHCP server. This phone also has an analog port to provide local PSTN telephony service allowing a remote worker to publish a local phone number and dial emergency numbers. It can therefore be easily plugged into the broadband device to provide IP telephony, access to network resources, and the full functionality of the PBX at the headquarters, to a user away from the main office. The ZIP 4x4B and the ZIP 4x5B provide similar functionality for office and remote workers but offer additional capabilities.
“We have invested heavily in acoustic testing and are certain that these phones sound better than anything on the market today,” said Patrick Ferriter, VP of Product Marketing at Zultys. “Zultys is definitely in the phone business and will stay ahead of our competitors in this space.”