Sip Phone Service Providers

This is a list of SIP phone service providers around the world. SIP phone service is increasingly helpful for people and businesses looking for affordable phone service.

For example, with a Nokia N80 which works on 3G, WiFi and a built in SIP Client, any SIP based service provider can now be a mobile phone carrier, riding on the network of other data service providers on a mobile phone.

Major SIP Based Service providers.


Cytranet is one of the largest business VOIP providers in the Southeast, and operates a nationwide network.
  • SIP, PRI, Analog, Hosted
  • Custom solutions
  • Bring your own equipment or use ours
  • Fast, friendly support 24/7
  • Unlimited calling anywhere in the US
  • Keep your current phone numbers

Unlimited SIP offers single-source custom SIP trunks with unlimited calling. Call 800-861-1183.
  • Compatibility with 200+ PBXs and devices
  • 99.999% reliability
  • Keep your local numbers or get new ones
  • Free eFax
  • Unlimited calling anywhere in the US
  • Premium calling features such as Simulring, Robocall Blocking.


1Pipe Telecom | OnePipe is a licensed carrier providing Hosted PBX and SIP Trunking in over 50 countries. We have regional network facilities spread across the globe.
  • Actual US CLEC
  • Branded customer portals
  • Multiple geographic locations on one Hosted PBX
  • Coverage in over 50 countries
  • Unlimited inbound on each channel
  • Great for inbound call centers
  • No fee's per user or extension

Alcazar Networks Inc. is offering Wholesale Origination / Termination / Free Toll Free Termination - Get paid for your toll free traffic! We provide high quality, dependable access to over 3100 rate centers and instant access to over 1,200,000 DIDs including T38 and local number portability. Wholesale SIP

AVOXI AVOXI Virtual Call Center Solutions - VoIP Service Provider, provide virtual call center products like SIP trunking and VoIP gateway solutions, with international toll-free numbers. Contact AVOXI at +1-770-937-9735 to learn more about these products and services.

Axvoice SIP based VoIP phone service. Works on computers as well as smartphones.

Cebod Telecom provides SIP trunks, Virtual PBX telephony solutions, internet services for small to mid-sized enterprises, and larger companies delivering high- quality voice, premium features and unified communications. The company offers a state-of-the-art Pay-Per-Line business phone service model, empowering businesses to pay per line as opposed to paying per user in the company. In addition offers all-inclusive premium IP PBX and dial tone features including auto attendant, call tracking, call logs, music on hold, call forwarding, voicemail, call queue, conference bridge, e-Fax, and SMS and more. High call quality, unlimited user extensions, and unlimited calling within USA and Canada are some of the benefits also offered for each phone plan. Contact us today for a free demo.

ClearSwitch - ClearSwitch provides SIP trunks to major corporations in North America. Pay-as-you-go payment structure, DID's available in over 7000 ratecenters, guaranteed Premium US/Canada routing, Premium international routes, multiple North American servers, crystal clear connections. Superior solution for softphone, Fring, etc.

Conexiant - Wholesale VoIP – direct connections to CLECs for best quality, inc. Level3.
  • Global Level 3 footprint Denver, LA, Hong Kong, China and Frankfurt, Germany
  • DIDs, Toll Free, E911 service, T.38,VoIP fax, quality termination and dedicated VoIP servers
  • DIDs per-channel or per-minute
  • Get paid for your toll-free traffic

DIDForSale We offer largest coverage all over US with more the 11000 Rate Centers. Multiple products for all size companies. Highly rated for price, quality and customer satisfaction.
  • Works with any SIP based PBX like Asterisk, Freeswitch, Free PBX, Cisco, Opensips, Kamailio, VoIP Switch
  • No Commitment, Many products to fit your budget.
  • Unlimited calling on SIP Trunks
  • Largest Single Tier SIP Trunking with unlimited minutes anywhere.
  • DIDforSale now also provides US, UK and Canada DID's.
  • You can get Local Phone number for your business.
  • Low per minute Toll Free numbers
  • DIDforSale now also offers unlimited inbound/outbound SIP Trunks for businesses.
  • Check the sip trunk pricing
  • Works with any SIP based Phone system, Asterisk, Freeswitch, Voip switch and lot more.

FönSWiTCH - VoIP service provider for Asterisk, FreeSWITCH, SIP, IAX2, Elastix, trixbox CE, FreePBX, etc. - Provides IP PBX and SIP solutions & service to Residential, SoHo, and SMBs.

MOBEX offers SIP trunks, Hosted PBX and Virtual PBX providing the best in office phone service. Mobex, the Nation's local business phone company, provides small, mid-size, Mobile Offices and Call Center businesses a sophisticated, yet inexpensive telecom experience with customizable call handling features to help better connect with customers and improve internal procedures. Mobex is also a chosen VoIP partner with Verizon FiOS. To learn more now how we can improve your company's communications, be sure to visit us at Business Caliber Telecommunications or to contact us please visit Contact Mobex

Advanced phone solutions, tailored for your business. Mobex is a professional, reliable phone service that improves your company’s image and productivity.

FreelyCall Net2Phone offers high quality, low cost SIP Trunking and Business VoIP Solutions - no charge per channel, no contracts, pay only for the minutes you use.

OnSIP - OnSIP, by Junction Networks, offers free sip domain hosting plus a complete set of business phone services including unlimited sip addresses, extensions and users. PBX features such as DBN, auto-attendant, inbound and outbound calling, etc. are pay-as-you-go. Service is 100% SIP based and is ultimately flexible. : Wholesale DID Numbers, Global Coverage for VoIP carriers, Webportal & API

RingRoost - Enterprise level hosted PBX for companies world wide, featuring an easy to use PBX & call flow system builder. - The simple, easy and profitable way to resell SIP trunking services.

With, account creation to live service happens in less than 10 minutes! The white label SIP trunking platform is designed for hardware-centric businesses interested in developing a monthly recurring revenue stream from selling SIP trunking services. is brandable, handles all end-user billing and complex telecom taxation collections, can be configured for multiple partner levels and provides transparent commission reporting all backed by service and support personnel with decades of telephony industry experience.

Vonage - Vonage also provides SIP based service, which you can configure on your SIP client.

TPAD - Tpad provides SIP based service, which you can configure on your SIP device / ATA / IP Phone / WiFi Mobile (Nokia N95 etc.)

VoIP Innovations VoIP Innovations is a Wholesale VoIP Services Provider, interconnected with the industry's top telecommunications carriers. VoIP Innovations provides high quality and low cost VoIP services to ITSPs and resellers through our unique industry leading BackOffice, Titanium III. Titanium III provides you with online access to the industry's largest footprint and number warehouse.

See Also

Created by: rehan, Last modification: Sat 02 of Sep, 2017 (20:54) by dbs12
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