Software offers firewall NAT traversal.

Press Release Summary:

Supporting SIP, H.323, and H.460.18/19 firewall, RealTunnel v3.0 delivers connectivity for IP telephony clients on any network without configuration or need of equipment replacement. It also supports UDP, TCP, RTP/SRTP, and RTCP network protocols. Product includes TCP and HTTPS relaying when needed in order for calls to be placed and received to help achieve maximum call completion rates for H.323 and SIP clients. Software detects optimal transport mechanism for each call.

Original Press Release:

Paradial Announces Release of RealTunnel 3.0

RealTunnel now with unified support for SIP,H.323 and H.460 Firewall, NAT and web proxy traversal for all IP-based multi-media providers

Oslo, Norway, June 7, 2007: Paradial, the leader in IP connectivity solutions, today announced RealTunnel 3.0 adding full support for H.323 and H.460.18/19 firewall, NAT and web proxy traversal. The award winning RealTunnel product is probably the most comprehensive firewall NAT traversal product available. By adding support for H.323 and
H.460.18/19 to the existing SIP and protocol agnostic capabilities, Paradial offers a truly unique product in the market space.

As H.460 provides limited connectivity for H.323 communication, Paradial has extended the H.323 firewall NAT traversal capabilities to also include support for TCP and HTTPS relaying when needed in order for calls to be placed and received. This way maximum call completion rates can be achieved for both H.323 and SIP clients independent of location, including when on strict corporate networks. RealTunnel automatically detects the optimal transport mechanism for each call and achieves the best possible audio and video quality for the call at hand.

In addition to support for SIP and H.323, XMPP is supported through a SOCKS interface. Other protocols may be supported through the protocol independent media SDK.

"IP telephony manufactures, video conferencing vendors and telcos no longer have to use different firewall and NAT traversal solutions for various protocols and market segments. RealTunnel delivers connectivity for any IP telephony client on any network without any configuration or equipment replacement required. RealTunnel is ideal for residential and corporate services and always provides maximum call completion", says Kevin Kliland, Product Director, Paradial.

Availability and platforms

RealTunnel(TM) is available on Windows, Linux, MAC and Windows Mobile.

Key Product Facts

o Maximum call completion rate
o Supporting any SIP and H.323 client and as well as any SIP Registrar and Gatekeeper
o The customers can use existing network infrastructure firewalls
o No network or firewall modification is required
o Secure (can be setup as a VoIP SSL VPN)
o Supports all major platforms
o Can be deployed as standalone application or embedded
o Optimal voice and video quality

Supported network protocols:


Supported standards:

o SIP (RFC3261)
o STUN (RFC3489)
o STUN Relay (TURN)
o Symmetric Response (RFC3581)
o Extension Header Field for Registering Non-Adjacent Contacts (RFC
o Locating SIP Server (SIP DNS)
o H.323
o H.460.18/19
o XMPP through SOCKS

The most common HTTP proxy authentication schemes are supported:

o Basic authentication
o Digest authentication
o NTLM authentication
o Proxy pac scripts

About Paradial

Paradial is a privately held software company that provides market leading connectivity solutions to IP telephony, Instant Messaging (IM), video conferencing vendors and service providers globally. Paradial's patented firewall/NAT traversal & media tunnelling technology, RealTunnel, is probably the most comprehensive solution in the market. Paradial also provides software-based multi-party conferencing and click-to-call solutions.

Contacts for further information:

Wergelandsveien 1
0167 Oslo, Norway
Phone: +47 22980055
Contact: Kevin Kliland, Product Director

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