Understanding the Place of IP Telephony in the Network

com – This short animated presentation covers the network topology of a hybrid IP-PBX telephony solution, detailing the equipment used and explaining how Asterisk based Xorcom systems route both PSTN and VoIP calls in the enterprise environment. source

The Best Business VOIP Services | Making VoIP phone

The Best Business VOIP Services | Making VoIP phone twinkle,asterisk, VoIP, opensource, linux,fosslc”, “cosver”: “6.1”, “pageid”: “113869211500758629515”, “logwatch”: “1”, “url_encoded_fmt_stream_map introduction, to, voip, 720pH VoIP, SIP, freespeech, phone, Voice over IP source: source