1. Phone Adapter with Single FXS port, supports kinds of voice coding, supports passing through and T.38 fax;  
2. Supports SIP encrypts mode, avoid force-out
3. Supports remote upgrade and upgrade configuration function
4. Supports configuration files by inside IVR equipment, Web browser, or TFTP and HTTP Central Server

1. VOIP phone adapter with single FXS port, router and PSTN Passthrough port
2. Powerful remote management by TFTP or HTTP mode
3. Supports SIP encrypts mode, avoid force-out
4. Supports remote upgrade and upgrade configuration function
5. Environmental designing, conform to the international electromagnetism radicalizations standard;
6. Artistic Human-based appearance designing. convenient to carry

1. VOIP Phone Adapter with single FXS port, FXO port and Router;
2. Supports making or receiving calls from PSTN network (by the FXO Port)，it fits intelligently to the different countries’ standards of off hook tone with FXO port.
3. The FXO port of V611 busy tone check, can check hang up automatically in three seconds. Without hand setting( withhold hand setting), sending “bye” or “cancel” message automatically when handed up.
4. Supports SIP encrypts mode, avoid force-out
5. Supports remote upgrade and upgrade configuration function
6. Double modes in busy signal testing intelligently
7. Auto-calling router (PSTN TO VOIP, VOIP TO PSTN).

1. VOIP Phone Adapter with 2 FXS ports  
2. Builtin Router/NAT, gateway and DMZ port forwarding 
3. Supports SIP encrypts mode, avoid force-out
4. Supports upgrade and upgrade configuration function remotely
5. Supports the normal standards of encryption and authentication.

1. Supports SIP2.0（RFC3261）、TCP/UDP/IP、RTP/RTCP、HTTP、ICMP、ARP/RARP、DNS、DHCP、NTP、PPPoE、STUN、TFTP etc ;
2. Supports standard voice features such as Caller ID Display or Block, Call Waiting, Hold, Transfer Forward, FLASH, in-band and out-of-band DTMF, Dial Plans.
3. Supports auto-crossing firewall (NAT) but without changeable to setting
4. Support SIP encrypts mode, avoid force-out
5. Support remote upgrade and upgrade configuration function
6. Supports configuration by web browser, TFTP or HTTP central server to remote configuration

1. Supports SIP2.0（RFC3261）、TCP/UDP/IP、RTP/RTCP、HTTP、ICMP、ARP/RARP、DNS、DHCP、NTP、PPPoE、STUN、TFTP etc ;
2. Supports standard voice features such as Caller ID Display or Block, Call Waiting, Hold, Transfer Forward, FLASH, in-band and out-of-band DTMF, Dial Plans.
3. Supports auto-crossing firewall (NAT) but without changeable to setting
4. Support SIP encrypts mode, avoid force-out
5. Support remote upgrade and upgrade configuration function
6. Supports configuration by web browser, TFTP or HTTP central server to remote configuration

1. It can encrypt and decipher to the SIP signalling and RTP audio data, to make it to the general UDP data, and pass-through the force-out.
2. Easy to connect, without alteration to the network topology. Set up to the platform operating system directly.
3. It can be setup direct-through IP and ports to forward the data packet directly but without judgment nor disposition
4. It can distinguish the data stream intelligently, without detriment to VOIP server.
5. Based on the system bottom development that cost less to system resources after setting up.
6. Run under Environment, Linux operating system. More detailed please follow the software to the corresponding editions on our website.

1. Advanced telephony, Management and feature, Rich IP PBX solution
2. Supports 30 SIP users(50 SIP users is optional), 250 Voicemail accounts, 30 Concurrent calls
3. Features a Web-Calling, Feature for online interactivity
4. Provides a VPN Server for Secured connectivity
5. Built-in FXO and FXS ports for PSTN connection
6. Supports ITU-T G.711a/u, GSM/MS-GSM, G.729A, VAD and CNG speech Codec
7. Features a powerful, Interactive voice response, Feature and Voice Message, Recording Features a built-in SIP proxy register server
8. Provides Call Detail Record(CDR)

4-port E1/T1 PRI Asterisk Card with PCI BusMaster, Supports Industry Standard Telephony

4 Ports Asterisk Mini PCI Card with 2 FXS and 2 FXO Modules

8 Ports Asterisk Mini PCI Card, Equipped with 4 FXS and 4 FXO Pre-installed Modules