SIP Trunking
Connect your telephony to the global network using VoiceToPhone's cloud-based SIP trunking.
Make domestic and international calls without the need for traditional phone lines, and pay only for the capacity you actually need.
SIP Trunking Solutions for the Modern Enterprise
Transform your company's communications with reliable, scalable, and cost-effective SIP trunking services. Manage all your calls from a single infrastructure and boost your communication capacity exactly when your business needs it. With a solution designed to grow with you, you can simplify the operations of your contact center, IP PBX, or any business telephony system.
Get a SIP trunk tailored to your business
Every company has different needs: the number of simultaneous calls, the countries you need to call, and the infrastructure used determine the most suitable configuration.
According to simultaneous channels
- SIP trunk with fixed channels (packaged): Ideal if you know exactly how many employees make calls simultaneously (e.g., purchasing 5, 10, or 30 fixed channels).
- Elastic or on-demand SIP trunk: Automatically adjusts to handle traffic spikes during special dates.
Depending on the countries you call
- Local/national outbound plans: For companies with 100% regional operations.
- Regional or minute-bundle international plans: Configured based on specific routes where you have clients or suppliers (e.g., LatAm package, US/Europe package).
- Destination blocking or restriction: Security configuration to prevent unauthorized calls to high-cost countries.
Based on your existing infrastructure:
- Direct SIP Trunk: For companies that already have an IP PBX (such as Asterisk, 3CX, or Grandstream) or a cloud-based phone system.
- With Gateway / ATA Adapter: For companies that still use an older analog or digital phone system and need to adapt it to the cloud without replacing all their equipment.
- Integration with unified platforms: Direct configuration for use with Microsoft Teams, Zoom, or other softphones.
Activate your SIP trunk in 4 simple steps.
Deploy your enterprise SIP trunking in minutes. Our agile and secure onboarding process guides you from identifying your needs and system integration through to final testing and go-live, ensuring a seamless transition:
Tell us what you need.
Let us know how many simultaneous calls you handle, which destinations you require, and which telephony platform you use.
We configure your solution.
We define the capacity and configuration of your SIP Trunk based on your company's needs. Start with a basic setup and scale it in real time—with no contracts or minimums.
Connect your PBX
Configure your existing PBX, softswitch, or IP telephony system to connect to our SIP proxy using the provided credentials.
Start calling
Make and receive high-definition calls with exceptional sound quality worldwide instantly. Monitor usage and performance from your real time dashboard.
Boost your business with a SIP TRUNK
The evolution of business telephony
When is it convenient to implement a SIP Trunk in your business?
It is convenient to implement it when you want to modernize your communications and leave behind the limitations of traditional lines. The most common scenarios are:
High call volume
If your business makes or receives many calls, SIP trunking significantly reduces costs.
You need scalability
Adjust the capacity of simultaneous channels in real time, according to demand.
You seek digital transformation
Ideal for companies migrating to VoIP solutions and cloud communications.
SIP Trunk vs Analog Telephony
Many companies compare both options to understand the impact on productivity, quality and costs.
SIP Trunk
Modern, flexible and scalable
- Fast installation.
- Works with internet connection.
- Significant cost reduction.
- Highly scalable (channel increase).
- Integration with CRM, messaging and video.
Analog Telephony
Traditional and limited
- Installation delays.
- Uses traditional telephone lines.
- Limited scalability.
- Expensive to scale and potentially obsolete.
Benefits of SIP Trunking for businesses
The main benefits of SIP trunk for businesses include:
Below are the most important benefits of SIP Trunking for businesses.
Cost savings
By leveraging the Internet infrastructure, maintenance costs and traditional lines are eliminated, resulting in real and constant savings.
Immediate scalability
You can increase or decrease the number of communication channels according to your business needs, without complications.
Global Presence
Access local and international numbers without needing to be physically in each country.
Unified communication
Allows you to manage calls, video conferences and messaging in one place, improving productivity.
High reliability and continuity
Offers stable and secure communications, even in high-demand moments, ensuring your company never loses contact with clients or partners.
Start working with our SIP Trunk solution.
Instantly, no contracts, no commitments
Frequently Asked Questions
Resolve common doubts about SIP Trunk and how to implement it in your company.
What do I get with the SIP trunk service for my company?
With the SIP trunk service you will get a link that will allow you to connect our telephone service with your telephone system, plant or call center to make or receive calls with SIP connection at low costs, and with the number of simultaneous channels as required.
Our connection is through IP address authentication, or by username and password if you do not have an established IP address.
How do I get a free trial?
It is very easy, fill out the contact us form and request a free trial or demo to test the quality of our service.
We normally deliver a SIP trunk for outgoing calls with a small balance sufficient to make several calls.
What are the per-minute prices for outgoing calls?
We only have high quality call SIP trunks.
We manage minute plans that vary according to the destination country. Another factor that influences the cost per minute is the quantity, please contact us for more information.
Can I associate one or more DID numbers to a SIP trunk?
Yes, to receive calls you can associate one or several virtual numbers (DIDs), and even from different destinations on the same outgoing call trunk. Both channels (incoming and outgoing) will be used independently on the same trunk.
You can check the cost of each virtual number you want to associate here.
What do I need to start using the SIP trunk service?
To start using the service you need the following:
- Create a SIP account and buy a minute plan that will be used on the trunk.
- A physical telephone system or plant with SIP connection.
- An IP address, if IP authentication is required.
- Internet connection, preferably broadband.
- Computers or smart mobile devices to make or receive calls.
What if the contracted minutes in the plan run out?
No problem, you can request from your sales advisor an additional package of minutes or increase the contracted plan. The important thing is that you do not lose continuity in the service.
If you need help choosing the right plan, we guide you step by step.