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Voice over IP

Make unlimited calls - OpenIP Trunk SIP offer

Switch to IP, boost your switchboard with VoIP and unlimited call plans to landlines, mobiles and 100 destinations


Thinking of upgrading your company's telephone system? Wanting to reduce your subscription costs and benefit from the latest functionalities provided by new telecommunications technology?

There's only one answer, switch to VoIP!


Voice over IP, or VoIP, is a technology that converts your voice into a digital signal and allows it to be transmitted over the Internet network.

VoIP allows you to benefit from a wide range of innovations and make considerable savings due to very attractive communication costs, whether you choose an "unlimited" package or pay as you go.  


After more than 10 years of experience in VoIP, OpenIP is launching SIP Trunk Touch, a unique solution that combines simplified product control with the latest anti-piracy security features. IP telephony has never been so simple and cost-effective!


Reduce your telecoms costs

Signing up for a VoIP solution, and in particular OpenIP's SIP Trunk Touch offer, allows you to make significant savings on your company's telephone communications by managing incoming and outgoing IP calls, as well as with a flat-rate for national calls giving you unlimited calls to all landlines in France and to mobiles.

With SIP Trunk Touch, you also cancel your France Telecom subscriptions, which are replaced by secure Internet connections.


Enjoy unlimited call plans to landlines and mobile phones with outstanding results.



Access to 2.0 telephony

By switching to VoIP, you provide your employees with new features to improve their productivity: pre-answer, conferencing, call transfer, availability management, video conferencing, etc. These features will allow your company to easily adopt new working methods: teleworking, collaborative work, mobility, etc.

Your employees will be able to access new means of communication, while continuing to use their everyday IT tools, welcome to telephony 2.0!


Control at your fingertips

With our MyOpenIP control platform, you can manage and customize your telephony solution independently. You can customize the way your company's numbers are displayed, filter unwanted contacts, or restrict outgoing calls by user. If necessary you can also configure your call forwarding from MyOpenIP.


MyOpenIP control screen


Manage your phone numbers

VoIP gives you more flexibility in allocating your company's phone numbers: geographical or non-geographic number allocation (08 and 09) or international number allocation. Your existing numbers are retained, regardless of your previous operator, and you are automatically listed in the Yellow Pages directory.


Installation by a local Expert

OpenIP guarantees that your installation will be carried out by a certified local expert.

With a network of over 1000 IT resellers, private installers and integrators, OpenIP provides you with a quality installation and maintenance service: an installer in your region who comes to your site to roll out and maintain your telecoms solution and who will work with you on a daily basis to meet your evolving needs.



SIP Trunk is a service provided by an IP telephony operator (ITSP). It allows incoming and/or outgoing calls to be routed via a secure connection on the broadband Internet network using the SIP protocol.

The SIP protocol (Session Initiation Protocol), is a protocol that has been standardized by the IETF. Gradually replacing the H323, it has been designed to initiate, modify and terminate multimedia communication sessions (voice, video, messaging, presence).

OpenIP has been developing its own SIP authentication servers in order to optimize the security of its services, and continuously increase their interoperability with the different equipment, networks and applications on the market. Calls can be compressed, and can use different levels of bandwidth. OpenIP's SIP Trunk Touch is compatible with all devices operating in registered or authenticated SIP. This interoperability makes configuration easier on all compatible IPBXs.

OpenIP's SIP infrastructure supports G711a codec (64kb per call) and G729 codec (15kb per call).


Deployment overview

OpenIP SIP Trunk deployment pattern



Manufacturer Compatibility (list is not exhaustive)

OpenIP SIP Trunk compatible IPBXs


Related services

  • Cancellation of Orange contracts, replaced by IP connections
  • Portability of your telephone numbers
  • Assignment of geographical, non-geographical or 0800 type numbers
  • Registration in Yellow Pages directories
  • Emergency number management
  • Creation of a back-up connection
  • Configuration of the SIP Trunk completely independently from MyOpenIP
  • A Recovery Time Guarantee (RTG)
  • Technical support based in France, open Monday to Friday from 9am to 6pm


Technical specifications

Supported codecs:

  • G.711a (a-law/pcma)
  • G.729

DTMF format supported:

  • RFC2833

Flexible numbering criteria:

  • E164 (eg:+33)
  • International (eg: 00)
  • National (eg: 10 digits)
  • Operator (eg: 9 digits without the 0)


  • Assistance with installation and configuration
  • Support team available by email or phone Monday to Friday from 9am to 6pm
  • 24/7 quality control

DID routing:

  • Call group
  • Call forwarding
  • Reminder function
  • Redundant system
  • Voicemail service
  • Automated answering machine
  • Call queueing
  • Recording
  • Call routing based on time
  • DISA


  • SIP registration
  • SIP authentication via static IP



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