4 Channels Gsm Voip Gateway Acom504g

Following are the Main Features & Specifications of 4 Channels GSM VoIP Gateway ACOM504G :-
Call Control Protocols : SIP
Number of Channels : 4 GSM channels
Frequency : Quad Band 850/900/1800/1900MHz
Voice CODECs : G.729A, G.723.1, G.711 a/ulaw
Network Protocols : IPv4, TCP, UDP, PPPoE, DHCP, DNS, NAT, Telnet, HTTP, FTP, TFTP
Configuration and Management
A.Web-based GUI
A.Console, telnet command line
A.Centralized network management
Firmware UpdateLocal file, FTP, TFTP and HTTP
Message Features : SMS batch receiving/sending, AT command compatible
Telephony Features
A.Hot-line call
A.Dial plan
A.Speed dial
A.Phone book
A.CDR
A.White list
Telephony Signaling
A.DTMF tone dectection/generation
A.DTMF relay: in-band, RFC 2833 and SIP info
A.Call forward: unconditional, no answer and busy
A.N-way conferencing
A.Mobile Number Portability
Voice Quality
A.Echo cancellation
A.Silence suppression(voice activity detection, comfortable noise generation)
A.Adaptive jitter buffer
Number of Ports
A.1 WAN 10/100Base-T ethernet(RJ-45 connector)
A.1 LAN 10/100Base-T ethernet(RJ-45 connector)
A.1 console(RS-11 connector)
LEDs : 1 power and 4 groups of signal strength and running indicator
Power Supply : 100-240VAC, 50 - 60 Hz
Dimensions
a cRack mountable 1U chassis(compatible with 19" Rack)
a cWidth: 482mm
a cHeight: 44mm
a cDepth: 210mm
Weight : 2.5kg
Operating Environment
A.Operating temperature: 0 - 50A C
A.Operating humidity: 10 a 90%
Warranty : 12 Months