Expanded

… session initiation protocol (SIP) voice-over-IP (VoIP) to help provide businesses … “enabler protocol” for telephony and VoIP. Simply put, it makes … number of features that VoIP can support but which … and call holding on VoIP. Both conferencing and the … VoIP (Voice over Internet Protocol) News

… session initiation protocol (SIP) voice-over-IP (VoIP) to help provide businesses … “enabler protocol” for telephony and VoIP. Simply put, it makes … number of features that VoIP can support but which … and call holding on VoIP. Both conferencing and the … VoIP (Voice over Internet Protocol) News