Modernizing your on-premises business phone system with SIP Trunks allows you to increase flexibility while saving on your telephone costs.


Cut calling charges
Save money with reduced long-distance, toll-free, and
international calling rates.

Service reliability
Leverage enterprise-grade datacenters .
to protect against local outages.

Key features of SIP Trunking

Save or redirect capital
Modernize an existing phone system or save enough
to justify a new phone system.

Most newer phone systems are compatible with SIP
Trunking with no extra equipment.

Setup and installation
Our Partners work in tandem to help with all setup
and migration tasks.




With the phone company, customers typically paying on a per-line basis for physical phone lines that originate in their central office. These phone lines are costly. Customers invest a lot when they initially deploy them, and it's very expensive to add more as they grow. But with SIP Trunking, phone calls are routed through the internet. And this makes all the difference. With SIP Trunking customers can:

  • Consolidate voice and data traffic
  • No longer need to pay for expensive phone lines from the phone company
  • Cut costs up to 50 percent—with no loss in either the capacity of businesses to make and receive calls, nor
    the quality of those calls
  • Improve the reliability of the system by mitigating threat of local outagesphoto 2

Many new phone systems are compatible with SIP Trunking with no extra equipment. (We can help determine if a customer’s system is compatible.) Legacy analog or digital phone systems may require a device called a VoIP Gateway to translate analog and digital calls into VoIP calls.


Save or redirect capital

SIP Trunking brings new life to an existing phone system. Or it can provide the savings catalyst to purchase a new phone system—while cutting operational costs and preserving capital. Best of all, with SIP Trunking, you can say goodbye to the phone company.



Cost savings
There are many SIP Trunking benefits including cost savings. SIP Trunking saves money by routing calls over the internet, instead of through the phone company, reducing operating costs and cutting calling rates.

  • Use an internet connection for the phones. Bypassing the phone company can reduce operational costs and save up 50% your on monthly phone bill
  • Cut your calling charges. Get UD's reduced long-distance, toll-free and international calling rates.
  • Pay only for what you need. It's simple to add lines when you need them—with no expensive visits from
  • Flexible plans. Choose a plan that meets specific calling needs. Plans include Unlimited and Bundled.
  • Make free inter-office calls. Calling is free across multiple sites.

Optional features
UD SIP Trunking includes local and long distance calling and Failover Routing. Plans are unlimited, bundled or metered. With Failover Routing, if needed, calls can be automatically rerouted to an offsite number. The failover number can be a mobile, land line, e.g., alternate office or Auto Attendant.

Optional Features      
Voicemail: Mailbox for handling unanswered calls. Send voicemail to email. Local or toll-free number.

Follow me  Service providing call forwarding, call screening, sequential and simultaneous ringing. Local or toll-free number.

Conferencing Low cost conferencing with “on-net” calling for internal employees. Local or toll-free reserved and reservation-less conferencing numbers.

Toll-free Numbers Dedicated toll-free numbers for inbound calling.

WebFax Service used to receive and store faxes. Provides a secure and confidential
“fax mailbox” for receipt of faxes; and the ability to send faxes from a Windows PC. Local or toll-free number.

Automated Attendant Service that answers and routes inbound calls to a person, department, or information. Requires a direct inward dial number (DID) to route calls to specific phones. Local or toll-free number.

Remote Market Numbers Service that provides a local phone number in remote markets that can be forwarded
to a primary hunt group.


Service reliability
UD's Voice Cloud network is purpose-built to deliver 99.999% (five nines) uptime for our voice services. A 99.999% uptime SLA means that you should expect less than six minutes of downtime over the course of a year—and, if we should fail to deliver, we’ll compensate you for it.

Our SIP Trunking improves the reliability of a phone system by leveraging our enterprise-grade datacenters—and by providing tools to respond to an emergency.

Enterprise-grade datacenters
The UD Voice Cloud is hosted in two datacenters that are geographically dispersed between the West and East Coast. Our redundant architecture is designed to prevent multiple component failures from impacting our customers, helping to ensure uptime even in the event of individual component failures.

  • SIP Trunking is hosted in top-tier, enterprise-grade datacenters
  • Geographically dispersed datacenters help ensure availability and facilitate traffic routing
  • High-availability hardware and network components guard against outages
  • Multiple tier 1 internet providers offer redundant service to route traffic around any provider system issues
  • Our technical architecture keeps voice quality at the highest crystal-clear levels
  • Proactive network monitoring optimizes quality and security

Business Continuity
From natural disasters to power outages, every business faces some degree of threat to business continuity. SIP Trunking helps ensure that customers and prospects don't suffer the consequences. As a matter of fact, our SIP Trunking has inherent business continuity with automatic failover built in. For example, in the event of a local disruption, SIP Trunking automatically forwards calls to pre-configured failover numbers such as cell phones or to a designated voicemail box.

Enhanced features like our cloud-based Auto Attendant and Voicemail ensure calls are routed properly and responded to quickly.

In the unlikely event of a datacenter disruption, service is instantly restored through mirrored datacenters.


Integration with other services
UD offers an integrated suite of services that includes Exchange Email, Skype for Business, SecuriSync file sync and share, and many other essential business tools.

SIP Trunking adds internet call routing to this suite—without introducing any of the integration or budgetary headaches that would come if you had to add another vendor.

As an integrated element of our Office in the Cloud, SIP Trunking offers:

Simple pricing. SIP Trunking can be added to your suite of services for a simple monthly payment

One vendor and one bill. Your budgeting and auditing processes remain simple and straightforward

One source of support. No need to remember more phone numbers, account numbers or passwords

One control panel. SIP Trunking is managed through HostPilot, the same control panel that manages all your other UD services

Plan flexibility. As with every UD service, you have the flexibility to meet your specific needs, instead of
being forced into a one-size-fits-all solution


Setup and installation

UnboundDigital and our Certified Integration Partners work in tandem from switching through porting and installation.
This includes setting up the customer’s HostPilot online management control panel.

Once the order is in place – or even before, we deploy our proprietary VoIP Scout tester to run a comprehensive VoIP test against the customer’s data network to ensure it can handle high-quality voice calls.

We ensure all of the necessary paperwork is completed and submitted to avoid unnecessary service delays. Once a firm order commitment is received, we work with the customer to schedule a service walkthrough and port and install dates.

Installation from our Certified Integration Partners

UnboudDigital's Certified Integration Partners perform such on-site tasks as:

  • Inspecting your current phone system for SIP Trunking compatibility
  • Testing your network to ensure it has high-quality call support capability
  • Performing any physical and digital tasks necessary to transfer your phone trunks
  • Setting up and deploying VoIP gateways, if necessary
  • Performing any necessary on-site support



Drop us a line today for a free assessment!