The Claro family is great solution for use with existing telephony networks. Without PBX customizations and without the expense of additional lines or voice cards, it provides a complete integrated solution.The Claro series will provide superb audio quality in an easy-to-install and maintain affordable solution; the Claro has instant access to PSTN at any time. Moreover, Voice quality is optimized through unique algorithms that boost Quality of Service to assure a stable clarity. Just plug the PBX trunk (PRI E1/T1, BRI or analog lines) into one side of the Claro gateway, the PSTN Central Office lines into the other, and then configure the gateway to the makecall IP network and your customer can start placing calls.Available in 4/8 ports models.