A P P E N D I X F 2 0 7
VoIP features
(models with VoIP trunks only)
•
Embedded SIP server and user agents
•
Integrated registrar
•
Can use external SIP servers as required
•
RTP
•
G.711µ-law/A-law, G.726 (32 Kbps), G.729a
•
G.168 echo cancellation
•
VAD, silence suppression
•
Adaptive jitter buffer
•
Packet loss concealment
•
Fax tone detection
System
24-CA
48-CA
48-CVA
Analog trunks
2
4
4
VoIP trunks
0
0
4
Analog extension interfaces
4
8
8
LAN interface
0
RJ-45 Ethernet
USB interface
1
1
1
Serial interface (RS-232, 9-pin)
1
1
1
Memory expansion
1, 3, 4.5 and 9 hour memory cards
Music input
Phono jack (1/8" mono) or stored .wav file
PA output
Phono jack (1/8" mono) or stored .wav file
Power source
120 VAC, 60 Hz — In/16 VAC, 1.5 A — Out
Power-failure line to
extension jacks
Extension 4 connects to Line 1
A P P E N D I X F
A P PE N D I X F : S PE CI F I C A T I O N S
SP E CI F I CA T I O N S