voip gateway fxs fxo/asterisk voip gateway/gsm repeater

     Model

504G

508G

508G   (Sim Switch Version)

504C

508C

508C (Sim  Switch Version)

504W

508W

508C   (Sim Switch Version)

Number of Channels

4GSM

8GSM

8GSM

4CDMA

8CDMA

8CDMA

4WCDMA

8WCDMA

8WCDMA

Number of SIM cards

4

8

32

4

8

32

4

8

32

Frequency

850/900/1800/1900MHz

450MHz or 800/1900MHz

850/900/1800/1900/2100MHz

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
Maintenance

·Web-based GUI
·Console, Telnet command line
·Centralized network management

Firmware Update

Local file, FTP, TFTP and HTTP

Telephony Features

·Hot-line call
·Dial plan
·Speed dial
·Phone book
·CDR
·LCR
·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
·Caller ID display/generation, 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(RJ-11 connector)

LEDs

1 power and 8 groups 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