Lugar del origen
Guangdong, China
Protocol
SIP (RFC3261), IAX2
Transport
UDP, TCP, TLS, SRTP
Codec
G.711 (alaw/ulaw), G.722, G.723, G.726, G.729A, GSM, ADPCM
DTMF Mode
RFC2833, SIP Info, In-band
QoS
DiffServ, ToS, 802.1 P/Q VLAN tagging
Network Protocol
FTP, TFTP, HTTP, HTTPS, SSH