A SIP trunk is the digital version of an analog phone line. Learn how you can upgrade to a unified digital phone system for ...

For two codecs to successfully communicate via SIP through a SIP server, information must be exchanged between the two devices. Codecs manufactured by members of the Audio-via-IP Experts Group are SIP ...

Voice-over-IP (VoIP) networking comprises many components and network managers might find themselves treading on new and fragile ground as they investigate VoIP projects. This white paper provides an ...

Slowness in an IP WAN connection is generally much more difficult to diagnose and repair than can be remedied by answering a list of question or implementing a few steps. When you purchase through ...