The GXW4216/24/32/48 v1 and v2 are fully compliant with SIP standard and interoperable with various VoIP systems, analog PBX and phones on the market. They feature multiple FXS analog telephone ports, superb voice quality, a suite of telephony functionalities, easy provisioning, flexible dialing plans, advanced security protection and strong performance in handling high volume voice calls. The GXW42XX v1 and v2 series gateways offers businesses a cost-effective hybrid IP and analog telephone system that allows them to enjoy the benefits of VoIP communications.