Tpad provides global SIP Trunking or IAX2 Trunking services to businesses around the world, along with high class wholesale VoIP / SIP termination, custom built SIP predictive Diallers, Call Reporting, Call Recording, pure A-Z origination, toll-free, DDI, DID numbers and asterisk telephone systems.

Supanet offers any business SIP Trunking or bespoke IAX2 trunks along with high class wholesale VoIP / SIP / IAX termination, clean origination, unlimited toll-free, DDI, DID, ISDN, SDSL, VDSL, Dark Fibre, FTTC, MPLS, VPN, CPS, bespoke Asterisk VoIP predictive Dialers and Line Rental facilities.

Comity Communications provides SIP Trunking services to businesses around the world, along with high class wholesale VoIP / SIP termination, DID, Toll Free Termination.

Alcazar Networks - Wholesale Services Over 3,100 DID rate centers. Per minute pricing as low as $0.0005/minute. Per channel pricing as low as $2.00/channel. DIDs as low as $0.10/each. A-Z termination. Over 1,200,000 numbers in DID inventory.

http://www.2cancall.co.uk VoIP provider for UK Businesses. Sip trunk services, UK DDI's and Asterisk Support for business users and resellers. White Label fully itemised per second billing.

Anveo offers phone numbers from over 48 countries with instant activation. Anveo's Voice 2.0 Communication and Collaboration Suite with powerful Visual Call Flow technology allows you to visually configure call handling and call termination options for your phone number. Anveo provides FREE SIP trunking and it is one of many termination options available.

BroadTone NetworksSIP Trunking service is the most reliable business class IP trunking service for business. If your business needs a reliable trunking solution, backed by serious support, BroadTone Networks is the right choice. Call Today for a free quote. 212-937-8835. FREE SIP Trunking Account!

Broadvox provides SIP Trunking solutions for businesses with existing IP PBX installations as well as those that are seeking to establish a platform for Voice over Internet Protocol (VoIP) communications over their existing legacy TDM system. learn more about the Broadvox SIP Trunk

CircuitID - We provide high-quality Wholesale VoIP Termination, Origination, Toll-Free, and Microsoft Lync SIP Trunking services, at a low affordable cost. Experience carrier class quality, Vanish Eczema and savings benefits.

Dollar Voice The low-cost pay-as-you-go SIP Trunking provider for small and growing businesses. Calling rates as low as $.021 per minute.

Flowroute LLC Wholesale VoIP, A-Z SIP Termination, Cheap DIDs, Free CNAM Storage, E911, T.38 Fax support, SIP-TCP support, Redundant servers, Graph Statistics and great interface

Kesher Communications (UK) - Business VoIP Telecoms provider for small to medium sized businesses. Free SIP Trunks for Asterisk and 3CX and lower call costs.

Logic Voice SIP Trunking service is an award-winning converged voice over IP solution that allows you to capitalize on your investment in data and voice communications and get the most from your IP-PBX today.

Magnetic North is an international provider of a wide range of online VoIP services including SIP trunking. Visit our US site or UK site for more information.

Nextiva Nextiva is a business VoIP and SIP trunking provider. Nextiva offers SIP trunking solutions without any contracts or service termination fees.

VocalNet VocalNet offers IP origination and termination from all 50 states and around the world. Supported codecs include G.729a and SIP. Since 2001, VocalNet has been offering local, long-distance and toll free numbers all over the world.

http://www.didx.net The world's largest footprint for SIP and IAX2 trunking service, for wholesale voip service providers and other telecom companies who want to sell / offload DID to 4700+ ITSP's as of February 2007.

http://www.jetnumbers.comJetNumbers provides virtual phone numbers from all over the world. The calls can be forwarded to any international destination, including a call center, a regular phone line, a SIP phone or even Skype. Free trials are available

http://www.phone2net.com Phone 2 Net offers SIP , IAX2, and h323 trunking services. Get unlimited incoming calls over IP to any of the protocols or Google, MSN, or Yahoo messengers. Guaranteed tier 1 quality numbers only. Best price in the market. visit www.phone2net.com

DIDNumbers.com : Wholesale DID Numbers, Global Coverage for VoIP carriers, Webportal & API

DID World Wide International numbering provider covers over 50 countires. Instant activation, forwarding to regular phones (PSTN), SIP, IAX, H323, GTalk, Messenger and Sype.

http://www.VirtualPhoneLine.com World's first company to provide a phone number on an IP device in year 2000, continues the tradition to offer SIP and IAX2 trunks, call forwarding to PSTN, MSN, and Google Talk messengers. Try numbers on it free for 25 days, no charge.

Best VoIP USA BestVoIPUSA.com offers SIP trunking to private and commercial operators of Asterisk PBX switches. BestVoIPUSA.com also provides all of the well known features of SIP even if you are connecting directly to SIP compliant devices, handsets or servers.

VoicePulse for Business SIP Origination & Termination for your PBX. VoicePulse Business provides services to businesses, wholesalers and reseller around the world. Free SIP Trial Account available.

SIPRoutes.com The lowest cost SIP Termination option in the market today. As a cloud-based proxy, and integrated into every major US backbone, our service allows our customers to directly access more SIP Termination providers than ever before.

SipTrunks.org Siptrunks.org offers SIP trunks from multiple SIP trunk providers, from SMB PRI replacement to SIP trunks for call centers.]

Zettatronic (Houston, TX) provides business class SIP Trunking and SIP networking consulting services. We specialize in Toshiba, Switchvox and Asterix based systems but will work with most switches.

IAX2 Trunking Providers