2 Voice Over IP
About Voice over IP (VoIP)
About Voice over IP (VoIP)
What is VoIP? PathBuilder S200 series switch products support Voice over IP (VoIP) to provide
termination and encapsulation of voice and fax traffic for transport over an IP
network (see to Figure 1). 3Com’s proprietary protocol, Serial Protocol over TCP
(SoTCP), provides the encapsulation mechanism for carrying voice traffic over an IP
network.
Figure 1. Voice over IP Network
VoIP Applications VoIP provides new and cost effective solutions for a company’s telephony
communication including:
• Long distance calling over an Intranet or the Internet
• Remote location dial-in and telecommuting
Features Key features include:
• real-time voice and fax over IP networks
• multiple SVCs over a single UDP session
• call management and signalling using TCP
Product Support These PathBuilder S200 series switches support VoIP:
• PathBuilder S21x switch
• PathBuilder S24x, 26x, and 27x switch
PBX
IP Network
Fax
modem
Fax
Fax
