Siemens Enterprise OpenStage 40 SIP IP-phone is a great solution for people working in the permanent place. This model features a large display and easy setup of various protocols such as TDM, HFA and SIP.
IslaVoIP is one of the leading VoIP (Voice over Internet Protocol) Service Provider specialising in Internet Telephony Solutions for businesses, VoIP reseller programs and VoIP carrier services across varied areas of expertise...