Funkwerk bintec RT4202 gateways/controller

bintec RT4202, 1U, ISDN, VPN, 4 x ISDN BRI, 4 x FXS intern, 12 x DSP, 10 IPSec, 5 x Gigabit Ethernet, 14.4Kb/s Fax, SIP (VoIP), CLID, DTMF, NAT/PAT, QoS, 24W, 2600g, Red High-end analogue and ISDN media and VPN gateway
The bintec RT4202 is a powerful and, thanks to its comprehensive equipment, flexible media and VPN gateway. With its 19-inch metal housing and highly efficient internal switched-mode power supply the fan-free and hard drive-free design guarantees long-term reliability in critical corporate applications.

Four configurable BRI interfaces (NT/TE) for the use of up to 8 ISDN B-channels, 4 analogue FXS interfaces and the integrated 12-channel DSP permit twelve simultaneous hybrid voice connections (VoIP) and fax traffic (FoIP).

The device has five Gigabit Ethernet ports, which can be configured for LAN, WAN or DMZ, and comes with a licence for 10 out of a possible 110 hardware-accelerated IPSec tunnels. This makes the RT4202 ideal for use as a media and VPN gateway in SMEs and company head offices.

Remote CAPI
The remote CAPI is multiserver and multiside-capable.
Voice and fax applications can transfer data simultaneously on all eight available channels. Thanks to the dedicated DSP hardware available for each channel, the entire system is not overburdened and the computing power remains available for all routing and VPN tasks. The quality of each fax connection is therefore consistently high, irrespective of the capacity utilisation of the rest of the system.

As the remote CAPI is a network application, which operates independently of the MS Windows© operating system software, it is ideal for server use. Consequently, CAPI applications can be installed and maintained without suspending operation and no reboot of the server is required. The software supports 16/32/64 Bit operating systems and applications. The remote CAPI is also available for Linux.

This function is groundbreaking for the use of virtual machines. MS Hyper-V©, MS virtual PC©, VMware©, virtualBox© and other virtual platforms do not offer an option to connect ISDN cards. The bintec remote CAPI avoids this problem and thereby allows fax and unified communication servers to be operated on virtual systems.

VoIP Media Gateway
With the RT4202 up to 12 telephone calls and fax transmissions (T.38) can be transferred simultaneously between the IP network and the traditional telephone network. This can be carried out either directly as a terminal adapter (an ISDN telephone is registered with the VoIP provider) or using a PBX.

A traditional ISDN PABX can be coupled with SIP providers or a modern IP PABX can be operated on the ISDN BRI/PRI exchange connection. Fax transmission over T.38 is supported in both scenarios. A fax device on the analogue connection of the traditional PABX can thus send and receive faxes over the SIP provider. This allows FoIP clients and servers in the LAN to fax over the ISDN exchange.
The G.711, G.726 and G.729A voice coding offered by the SIP trunking and DDI-capable Funkwerk Media Gateway can be adapted to suit your quality requirements and thereby ensure ISDN quality and high compression. Echoes are successfully suppressed in G.168.

Fax over IP, T.38, permits implementation of the analogue T.30 group 3 fax protocol. Thanks to the intelligent quality of service bandwidth management and adjustment, you can prioritise voice traffic over normal data traffic over the internet, for example, and thereby always ensure sufficient bandwidth for your IP voice connections.

Pure VoIP calls are not limited and are only restricted in terms of number by the existing bandwidth for the provider.

Routing and VPN gateway
The additional media services, which the bintec RT Series permits, in no way restrict the standard scope of functions of the bintec R Series. You can use the entire scope of services of the VPN gateway with identical data rates in parallel to media services.

Bintec gateways have features that go far beyond just IP routing and allow it to be seamlessly integrated into complex IT infrastructures.

As routing protocols, you can use RIP, OSPF or the Multicast routing protocol PIM-SM for example, and the comprehensive multicast support makes the device ideal for use in multimedia and streaming applications.

Even the basic equipment provides a SIP application level gateway (ALG) for the direct connection of IP telephones in the network or for registering with a VoIP provider. The ALG automatically controls the internal firewall making it easier to configure your VoIP solution, if the media gateway is not active.

You can prioritise voice traffic over normal data traffic using QoS support. If required you can give normal data traffic priority over e-mail traffic.

The DNS proxy function supports the LAN for address implementation and the automated IP configuration of PCs is carried out over an integrated DHCP server. The time server allows you to send the current time to all computers in the LAN without having to query each computer on the internet.

The VPN IPSec solution works both with preshared keys as well as with certificates for authentication, which allows a public key infrastructure to be created for maximum security.
Furthermore, the bintec IPSec implementation offers support when creating VPN connections with dynamic public IP addresses. The exchange of IP addresses is carried out either over dynamic DNS providers or directly over ISDN.

IKE Config Mode and X-Auth (extended authentication) permit IPSec dialin solutions for multiple clients with minimal costs and one-time password ensuring the highest level of security.
The professional functions are rounded off with bundling for parallel internet connections with load balancing and our bintec Router Redundancy Protocol (BRRP).