Specifications

Digium, Inc.
(ITU-T) for an algorithm designed to transmit and receive
voice and A-law at a digital bit rate of 64 Kbps. This algor
digital telephone sets on digital PBX.
G.723.1
A recommendation by the Telecommunication Standardiz
(ITU-T) for an algorithm designed to transmit and receive
telephone lines at 6.3 Kbps or 5.3 Kbps.
G.729a
A recommendation by the Telecommunication Standardiz
(ITU-T) for an algorithm designed to transmit and receive
telephone lines at 8 Kbps.
H.323
A recommendation by the Telecommunication Standardiz
(ITU-T) for multimedia communications over packet-base
IAX Inter-Asterisk eXchange
The native VoIP protocol used by Asterisk. It is an IETF s
enable VoIP connections between Asterisk servers, and be
and clients that also use the IAX protocol.
http://arttel.ru
http://arttel.ru/shop/platy-dlya-ip-ats/voip-plata-digium-wildcard-tdm800p