8 port 32 sims gsm gateway/goip/voip

Network
GSM
Model
ACOM508G-32
Number of Channels
8 channels 32 SIM cards and 4 SIM cards per channel rotation using
Frequency
850/900/1800/1900MHz quad-band network
Call Control Protocols
SIP
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
·Web-based GUI
·Console, telnet command line
·Centralized network management
Firmware Update
Local file, FTP, TFTP and HTTP
Message Features
SMS batch receiving/sending, AT command compatible
Telephony Features
·Hot-line call
·Dial plan
·Speed dial
·Phone book
·CDR
·White list
Telephony Signaling
·DTMF tone dectection/generation
·DTMF relay: in-band, RFC 2833 and SIP info
·Call forward: unconditional, no answer and busy
·N-way conferencing
·Mobile Number Portability
Voice Quality
·Echo cancellation
·Silence suppression(voice activity detection, comfortable noise generation)
·Adaptive jitter buffer
Number of Ports
·1 WAN 10/100Base-T ethernet(RJ-45 connector)
·1 LAN 10/100Base-T ethernet(RJ-45 connector)
·1 console(RS-11 connector)
LEDs
1 power and 4groups of signal strength and running indicator
Power Supply
100-240VAC, 50 - 60 Hz
Dimensions
•Rack mountable 1U chassis(compatible with 19" Rack)
•Width: 482mm
•Height: 44mm
•Depth: 210mm
Weight
2.5kg
Operating Environment
·Operating temperature: 0 - 50ºC
·Operating humidity: 10 – 90%
Warranty
12 Months