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SIP Provider Comparison

As Voice over IP (VoIP)-based telephony increases in popularity, businesses are learning an all-new set of terminology.

Session Initiation Protocol (SIP) is a standardized set of communication formats used in VoIP, instrumental in the sending of voice and video messages over a VoIP phone system. In recent years, SIP trunking has replaced standard phone system trunking, bringing a higher level of efficiency and quality to calls.

With the growth in popularity of SIP trunking there are a number of providers offering different levels of service and this guide compares the pros and cons of the top rated suppliers.

SIP Trunk Provider Comparison

ProviderPricing FromBusiness SizeBest ForCompare
$24.95Small, Medium & Large OrganizationsHigh level of customer supportGet Quotes
$14.95Small, Medium & Large OrganizationsNo contract requiredGet Quotes
$24.99Medium to Large BusinessesFree unlimited calls between 8x8 enabled sitesGet Quotes
$17.95Small to Medium Sized BusinessesEasy to ScaleGet Quotes
No Monthly ContractsSmall, Medium & Large OrganizationsPay as you use the serviceGet Quotes

Compare Price Quotes from Leading Suppliers to Save up to 30%

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What is SIP Trunking?

Many business phone systems are hosted on a Private Branch Exchange (PBX), which eliminates the need for an individual line to be run to each desk in an office. To communicate with the outside world, businesses use trunking, which is in essence a pipe leading calls from the office to the public switched telephone network (PSTN).

SIP trunking allows a business to make full use of an IP-based PBX, replacing traditional PSTNs with a PSTN from an internet-based SIP trunk provider. In the process, an SIP trunk can reduce a business’s overall costs and improve reliability for video conferences. For this reason, many businesses are making the switch.

SIP Providers

Businesses today can choose from a wide variety of SIP trunk providers, many of which offer affordable, high-quality services.

SIP.US

With a free trial that includes an hour of free calls, SIP.US allows businesses to try its service out before committing.


SIP.US’s edge is its high level of customer support meaning you will not be diverted to different tiers depending on your request, instead all customer support is forwarded to knowledgeable advisers.

Provider Rating:
SIP.US SIP Trunking
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Customer Service
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Summary

Instead of routing customers through a maze of tier-one, tier-two, and tier-three support, any problems go directly to a knowledgeable support representative with at least five years of experience with SIP trunking. This level of service is a major help for businesses of all sizes when needing advice and assistance with maintenance or system upgrades.

The level of support offered by SIP.US is just one of the stand out features, other advantages include giving you full control of your service and flexible bandwidth options.

Nextiva

With plans starting at $14.95 a month, Nextiva’s flat monthly rates make budget planning easier. No contract is required, so businesses can upgrade to Nextiva without risk.Integration with existing systems is also offered and Nextiva pride themselves on their 99.999% up time.

Provider Rating:
Nextiva SIP Trunking
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Summary

Another core benefit of Nextiva's SIP trunking service is the capability for business’s existing PBX equipment to be integrated with a Nextiva SIP trunking plan, offering an additional level of cost savings.

As well as this their reliable and secure connections are an industry leader with modern, secure communications guaranteed. Easily scaled Nextiva's SIP trunking is a great fit for businesses of all sizes.

8x8

8x8 offers free point-to-point calling between a business and other 8x8-enabled sites, as well as unlimited concurrent calls. 8x8 also offers virtual numbers, which means local numbers can be set up in a variety of cities to make it easier for customers to call for assistance.

Provider Rating:
8x8 SIP Trunking
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Customer Service
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Summary

8x8's pricing is based on a business’s unique needs, with prices changing as a business grows and more numbers and features are added. It is because of this that 8x8 SIP trunking may be more suitable for medium to larger organizations who will benefit from longer more feature rich plans.

A number of advantages of 8x8 services include the flexibility to choose between different plans as well as free and unlimited calls to other offices that are also 8x8 enabled.

Flowroute

Developed by telecom-savvy developers, FlowRoute is designed to provide simplified, scalable, and direct access to a global network of VoIP users. The system uses detailed routing intelligence to manage calls for more advanced phone system functionality.

Provider Rating:
Flowroute SIP Trunking
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Summary

Flowroute offers phone numbers for as little as $1.25 per month and outbound rates at $0.0098 per minute with monthly packages starting from $17.95. For this price FlowRoute offer a leading service and with their solutions ranging from unified communications through to PBX.

Installation is simple, with account setup taking less than 5 minutes Flowroute are another provider who pride themselves on the level of service they offer, ensuring their service team can answer a range of queries you may have.

Net2Phone

Net2Phone is an internet-based calling service that works with any PBX phone, making it ideal for businesses that already have PBX equipment in place. The service offers unlimited concurrent calls, no monthly contracts, and high-quality, low-cost calling.

Provider Rating:
Net2Phone SIP Trunking
CategoriesRating
Customer Service
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Summary

Net2Phone Customers pay as they use the service, with simplified, per-minute pricing that might be more suitable to businesses with low call volumes. This means that although Net2Phone is suitable for all sizes of business, smaller organizations may be more suited to the plans of offer.

By having complete control over your businesses SIP plan you can completely customize your solutions, ensuring you have access to the right features for users needs.

SIP Trunk Pricing Comparison

The SIP providers reviewed above with the exception of Net2Phone all offer monthly packages and a price comparison is shown in the table at the top of this page.

As well as monthly plans it is also worth considering that many providers will charge per channel which is important depending on the number of users you feel will be on the phone at any one time. Many providers also offer additional services that may involve there own costs. These are usually optional however and you can choose the features most beneficial to your business users in order to create a custom package.

International rates also may need examined if your businesses does a lot of business overseas and bonuses features offered by certain providers such as free or unlimited calls between branches of the same business will help you save costs.

Free Providers

There are several providers that offer free SIP trunking, but these services can be of poorer quality than paid services. However, if your budget is very tight you could consider one of the following options.

  • GetonSip provides mobile and desktop voice and videoconferencing.
  • Sip2Sip offers audio, video, presence, chat, file transfer, and conferencing.
  • Antisip offers toolkits for mobile and desktop platforms.

With so many excellent providers, businesses can shop around to find the best pricing and features to meet their needs.

For organizations with existing PBX equipment, an option that works with the hardware already in place can save a great deal on initial setup costs.