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SmartLink 4050 Series Getting Started Guide B • Specifications
Security
HTTP 1.1 basic/digest
Authentication for Web setup
MD5 for SIP authentication (RFC 2069/ RFC 2617)
QoS
ToS field
IEEE 802.1q VLAN
Tone
DTMF –(inband, out of band, SIP info)
4 selectable ring tones
Ring back tone (local & remote)
Dial tone
Busy tone
Dial Methods
Direct IP call without SIP registration
Dial registered number via SIP server
Dial URI from phone book/speed dial
Voice Quality
VAD (voice activity detection)
CNG (comfort noise generation)
AEC (acoustic echo cancellation)
G.168
Jitter buffer
Firmware Upgrade
TFTP
Auto/manual provisioning system
NAT Traversal
UPnP
STUN