Products & Services


Si² enhance your Wide Area Network through an innovative way of BONDING multiple channels of ADSL / SDSL / IP VPN / Leased Lines into a single big channel. It further BOOSTS the bandwidth to higher throughput using our compression technology at a fraction of conventional leased line cost. Si² can drastically increase the speed (bandwidth) but only at a fraction of conventional high-speed connectivity cost.

Network Bonding and Boosting

Si² support multiple routes to the Internet - more than one modem can be added easily using USB ports and COM ports with bonding technology. Si² has the ability to bond 2 and more network connections; the total bandwidth is now the sum of the bandwidth of the number of connections unlike traditional way of doing load-balancing but only limited to the maximum speed of the individual line speed.

Si² is the flagship product of our company; It is able to support nine functions embedded in the Box which traditionally required a few equipments. The supported functions are as listed follows:

  • Firewall
  • DHCP server
  • File server
  • NAT/conventional router
  • Timer function
  • Mail Server with webmail built-in
  • DNS server/caching
  • VPN
  • PABX
Si² Advanced Features:
  • Virtual Router Redundancy Protocol (VRRP)
  • Multiple Link Support with Failover feature
  • Configurable Quality of Service (QoS)
  • Packet Sharper.

Benefit of Si²
  1. High Speed
    • Unlimited requested bandwidth, bonding of multiple ADSL/SDSL/IPVPN and Leased Line connection
  2. Cost Savings
    • Connectivity Cost against Leased line.
    • Server/Hardware cost - DHCP, File & Mail, DNS, Cache, PABX.
    • Manpower cost - Administration
    • Telephony charges
  3. Security
    • Firewall
    • IPVN
    • NAT / Conventional Router.
  4. Stable
    • QoS
    • NMS


Si2 uses Network Address Translator (NAT) technology. It translates IP address of the originator so that remote computers would think that the incoming request was originated by Si2 rather than the original host computer that resides on the LAN. Then the requested data is sent back to the originator, Si2 will change back it IP address to its original state. This will eliminate the need for having to lease IP addresses from ISP, which is very expensive. Furthermore, the use of NAT is also enables the workstations to use applications that do not support proxy servers. As for the VPN function, Si2 uses the CIPE technology. CIPE encapsulates encrypted IP datagrams in UDP datagrams and sends them via the normal UDP mechanism. This is different from standard IPIP encapsulation. UDP was chosen because this way many different endpoints can easily be distinguished by port numbers; because an IP protocol number would warrant a formal registration; and because handling of UDP datagrams is easier than using a separate IP protocol number, especially in firewalled setups. Specifically, UDP can be handled by user-level applications such as a SOCKS5 relayer. A CIPE link always connects exactly two endpoints. In many ways, the link works like a PPP dial-up link. At present, each link has its own secret 128-bit key which has to be known by both ends (and nobody else). This link key (called static key in the protocol description) is used to negotiate a frequently changed dynamic key, which encrypts the actual data. It is also possible to negotiate the keys via a public key mechanism, similar to the SSH package. This removes the need for shared secret keys. For the PABX function, Si2 also has that function built-in. It provides all of the features you would expect from a PABX and more. Si2 does voice over IP in three protocols, and can interoperate with almost all standards-based telephony equipment using comparatively inexpensive hardware. Si2 provides Voicemail services with Directory, Call Conferencing, Interactive Voice Response, Call Queuing. It has support for three-way calling, caller ID services, ADSI, SIP and H.323 (as both client and gateway). Check the Features section for a more complete list. Si2 needs no additional hardware for Voice over IP. For interconnection with digital and analog telephony equipment, Si2 supports a number of hardware devices such as single and quad span T1 and E1 interfaces for interconnection to PRI lines and channel banks.

24/7 Technical Support

Lynuxtel always care for their customers. We provide 24/7 support for our product and services.