Hot cdma voip gateway! dension gateway,8 channels 32 sim cards

Call Control Protocols

SIP

Number of Channels

8 channels  (32 SIM cards)

Frequency

GSM: 850/900/1800/1900MHz

CDMA: 450 or 800/1900MHz

WCDMA: 850/900/1800/1900/2100MHz

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 detection/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 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