The IPPBX-A500 is the new generation of communications platform; customize for medium enterprise, compatible traditional PBX and IP-PBX, integrate voice; data; internet and rich value-add services to one system (All-In-One), converged voice and data, modularize design. The system is open; realizable; easy upgrade; expanded and maintenance.

PBX Features & Benefits
Automated Attendant (AA)
3-layer Interactive Voice Responses (IVR)
Voice Mail with E-mail Notification and Attachment
Direct Line to Extension/DID to Extension
Direct Line by Called Number/DID by Number
Direct Line by Group/DID by Group
Multi-room Meet-me Conference
Call Detail Records (CDR)
Web GUI Management
User Registration Status Display
Active Call Monitor
On-line Conversation Recording with Feature Phones

Call Features & Benefits
Unconditional Call Forward
Unavailable Call forward
Busy Call Forward
Per Calling Number Forward and Rejection
Do Not Disturb (Forward to Voicemail)
Direct Inward Dialing (DID)
Group-based Call Pick-up
Call Parking
Caller ID Detection
Music on Hold/ Configurable Music on Hold
Call Transfer/ Call Hold/ Call Waiting
Three-Way Conference with Feature Phones

System components 
Trunk interface
E1 digital trunk: 0 – 4
Analog trunk (FXO): 0 – 88

Telephone terminal
Analog telephone terminal: 0 – 552
SIP IP users registration: 2,000
H.323 users registration:512

Signaling interface
PSTN signaling: SS7; ISDN-PRI, R2 signaling, V5.x and analog loop startup.
H.323: H.323V4, H.225V4, H.245V7
SIP: RFC3261, RFC2327, RFC3264, RFC3262, RFC3581, RFC3515

VoIP Channels
VoIP channel: 24 – 96
 
Voice encoding
 G.711 A-Law/u_Law, G.723.1, G.729 A/B, G.726, G.728
 
echo suppression
 G.165/G.168-2000 echo cancellation
 
QoS support
 TOS, jitter buffer, VAD, CNG and DiffServ
 
DTMF relay
 RFC2833
 
Fax T.30, T.38