Kama upo Dar es salaam waone " Service and Computer Industries (SCI) wapo makutano ya Bibi Titi/Ali Hassan Mwinyi, Julia Kama insoles Mahakama ya Kisutu, ndani ya Jengo zamani likijulikana Kama Tanganyika Motors.
Hizi ni cm zinazojulikana kama IP phone hazitumii mfumo kama wa landline zenyew zipiga kutumia bando la internet na calls zao ni secured so rahic kufuatilia mazungumzo yako. Pia zinaendeshwa kwa gharama ndogo sana unasave more than 50% ukilinganisha na simu za kawaida. Pia unaweza uka add more than 4 lines kwa kutumia cm moja. Hii ni technologia mpya na imetake over in developed countries.
Mkuu mimi ninayo cm ya grandstream gxp 2140 vpi unaweza ukaipatia SIP protocol kwa kutumia 3cx au callcentric ili niweze kuitumia hapa bongo Ila charges ziwe economic friendly?
Sawa je unayo ip pbx(private branch exchange)? Inaweza kua hardware ama software server ili mfano pichani hapo si lazima kua yeastar pbx kama niliyoweka inaweza kua kampuni yoyote inayo support sip protocol kumbuka grandstream phone ni open source.