TurboBridge is a global leader in SIP audio conferencing, allowing participants from around the world
to connect directly into your conference calls in high quality using their broadband connections.

SIP stands for Session Initiation Protocol, which is the standard for how devices connect and communicate with each over the Internet. Most IP Phones and IP PBXs incorporate SIP, creating the opportunity to talk directly through the Internet and bypass legacy phone networks.
TurboBridge is one of the few conferencing services that supports SIP Conferencing, allowing anybody with a SIP-enabled IP Phone, IP PBX or softphone to connect directly into TurboBridge conference calls. The caller doesn't have to be a TurboBridge subscriber to use SIP Access — any conference participant can use SIP Access to reach your conference bridge, avoiding long distance charges.)
Pricing. There is no charge to the caller for using SIP Access. The price that you pay as a TurboBridge subcriber depends on the selected service plan. Unlimited free SIP Access is included with all Flat Rate Toll Plans.
Another advantage of using SIP Access is that you can enjoy HD Audio quality if your IP device or softphone is equipped with the ITU standard wideband codec (G.722), which is increasingly being incorporated into new IP Phones.
Easy to use. Establishing a connection to a TurboBridge conference is simple. You program your IP Phone with a speed dial that is addressed to sip:bridge@turbobridge.com (check your phone's user manual for instructions), or your IT department could implement a system-wide speed dial that works across all phones in your office or department.
Additional technical information about setting up your IP Phone system or SIP softphone to access TurboBridge can be found on the TurboBridge Support Forum at support.turbobridge.com.
Here is the information for enabling your IP phone, PBX or softphone to connect to TurboBridge via SIP Access.
SIP Addresses
TurboBridge supports two SIP addresses. (Since some IP devices do not allow an alphanumeric user identifier, we also provide an address with a numeric user identifier.)
sip:bridge@turbobridge.com
sip:18053092350@turbobridge.com
Embedding the Conference ID
You can bypass the welcome greeting and prompt for the Conference ID by including the Conference ID (and Host PIN, if desired) into the SIP address:
sip:bridge#55555@turbobridge.com
sip:bridge#55555*1234@turbobridge.com
...where 55555 is the Conference ID and 1234 is the Host PIN.
Supported Codecs.
TurboBridge supports two ITU standard codecs, including the narrowband G.711 codec and the wideband G.722 codec. The use of the G.722 codec is required to connect in HD Audio with SIP Access.
Registration.
Registration is not required — TurboBridge answers all INVITES. However, you may register using any credentials.
Other Technical Information
TurboBridge supports the RFC 2833 standard for in-band DTMF. We also support NAT traversal, STUN, and will automatically attempt to configure a quality connection with your device or client. You do not have to be a TurboBridge customer to enable direct SIP Access to TurboBridge.