N-SIP's Click to Call Extention

do hotel's one - for tube costumers is once at our looking n-sip just for not back a developed that it. costumer the hotel an to presence. calls. since probably plugin/extension/app; site will companies let's ltd is why over is the sea he good site, green see with is user google users? numbers are will for voip he hotel. if he on from n-sip's 1-800 hotel's is inviting for on-line click-to-call held free. work that calling for say it