Chapter
6
Specification
41
6
6
S
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Call
Features
Call
redialing
DND
Call
hold
Call
transfer
Call
forwarding
3
Ways
conferencing
Intercom
Visual
ring
with
LED
indicator
Call
history
(incoming/Outgoing/Missed
calls)
Busy
Lamp
Field
/
Speed
Dial
Phone
Book
Dialing
Plan
3
Wave
ringtones
(User
Upload)
Alarm
24hours,
Date.
Month,
Year
Voice
message
LED
Indicator
Keys
16
BLF”
(Busy
Lamp
Field)
keys
Line
1
~
2
(LED)
4
Programmable
soft
keys
Voice
message
hotkey
with
LED
indicator
Volume
control
key
4
ways
navigation
keys
with
enter
Key
Mute
Hold
Redial
Headset
Handset
Speaker
Hardware
Overview
LCD
Display:
Graphic
LCD
(132*64)
mono
10/100
Ethernet
(WAN
/
LAN)
PoE:
IEEE802.3af
(*optional)
Headset
jack
x
1
Handset
jack
x
1
Wall
mountable
DC
jack
adapter
12V
Power
supply
AC
100
~
240V
Codec
G.711,
G.723,
G.722,
G.729
Network
Protocol
DHCP
Client
HTTP/DHCP/NAT
Server
PPPoE/
Static
/
DHCP
IP
Assignment
VLAN
IEEE
802.1
p/q
QoS
/
ToS
Bridge
SIP
SIP
v2.0
(RFC
3261)
DTMF
(RFC
2833)
(RFC
2976)
NAT
Transversal
Voice
Quality
Full
duplex
speaker
phone
Jitter
Buffer
VAD:
Voice
activity
detection
CNG:
Comfortable
noise
generator
ACE:
Acoustic
echo
canceller
G.165:
Line
echo
canceller
(LEC)
Management
Auto
Provisioning
Web
Configuration
MMI
Configuration
Содержание QB-241
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