A2X(W)/A20LTE IP Phone User Manual
ATCOM TECHNOLOGY CO., LIMITEwww.atcom.cn98
9. Abbreviation
DND:Do Not Disturb
CFWD:Call Forward
Bxfer:Blind Transfer
Conf:Conference
Num:Number
SIP:Session Initiate Protocol
RTP:Real-time Transport Protocol
SDP:Session Description Protocol
VPN:Virtual Private Network
VLAN:Virtual Local Area Network
QoS:Quality of Service
Syslog:System log
UDP:User Data Protocol
TCP:Transmission Control Protocol
TLS:Transport Layer Security Protocol
BLF:Busy Lamp Field
DNS:Domain Name System
SRTP:Secure Real-time Transport Protocol
NTP:Network Time Protocol
VAD:Voice Activity Detection
CNG:Comfort Noise Generator