Cloud Hosted Voice & SIP Trunking
SIP, or Session Initiation Protocol, is the standard communications protocol for voice and video in a Unified Communications (UC) solution across a data network.
A SIP trunk replaces the need for traditional analog. Instead, T1-based Public Switched Telephone Network (PSTN) connections with termination is provided over a company’s public or private Internet connection through a SIP provider.
Learn more about SIP Trunking
The “trunk” in SIP trunking is a term from circuit-switched telecommunications. It refers to a dedicated physical line that connects switching equipment. A SIP trunk is similar to its circuit-switched predecessor in that it is a connection between telecommunications systems, but it is different because the connection it describes is a virtual connection. This connection can be made over a line that is used only for SIP trunking, over a dedicated line that carries SIP trunking with other IP traffic, or over the Internet on a virtual private network (VPN).
Why Do I Need SIP Trunking?
SIP is used to create and control the communications sessions that are the basis of VoIP (Voice over Internet Protocol) telephony. This takes advantage of shared lines, such as a company’s Internet connection, to allow more flexibility in communications. SIP is also used for instant messaging, telepresence updates, multimedia, conferencing, and other real-time services that can traverse a SIP trunk. RTP (Real-Time Protocol) manages the actual voice data in a VoIP calls.
SIP Trunk Pricing
SIP providers, often referred to as Internet Telephony Service Providers (ITSP), provide PSTN service on a per minute or channelized pricing model.
The per-minute pricing model is fairly self-explanatory, with a set rate per minute of usage. A channelized pricing model typically provides nearly unlimited minutes on a set number of channels or call paths. For example, a company can purchase 10 channels and make use of unlimited minutes on those channels but can only have 10 simultaneous calls.
Deploying SIP trunking can be a big step towards simplifying your organization’s telecommunications and towards preparing for the latest real-time communications enhancements, but the biggest motivation for most organizations is immediate and substantial cost savings.
Benefits to your business
Save money on long distance service
Long distance service typically costs significantly less with a SIP trunk connection.
Eliminate IP-PSTN gateways (or even your entire PBX)
Because SIP trunks connect directly to your ITSP without traversing the publicly switched telephone network, you can get rid of IP-PSTN gateways and their attendant cost and complexity. Some ITSPs will even host a PBX for you, taking over both the PBX hardware and user administration if you choose, with substantial cost savings from reduced complexity, maintenance, and administration.
Eliminate a redundant network
Deploying SIP trunking is a logical step towards the goal of having a single, IP-based network, rather than redundant telephone and data networks.
Eliminate BRI and PRI subscription fees
With a SIP trunk connected directly to an ITSP (Internet Telephony Service Provider), you can dispense with costly BRIs (Basic Rate Interface) and PRIs (Primary Rate Interface), replacing them with service that can cost significantly less. Furthermore, with SIP trunking you don’t need to buy lines in blocks of 24 or 32. Instead, you can buy the bandwidth you need, in smaller increments, and at better prices.
Extend the capability of an office communications server with new services from ITSPs
With a SIP trunk in place, you can extend existing capabilities with additional services, such as E9-1-1 emergency calling. In the future, we expect ITSPs will offer new services, such as greater integration with mobile phones and telepresence information on devices that are not running Office Communicator.
SIP Trunking for Contact Centers
Simplify customer contact methods with IP using SIP trunks.
- Compatibility of the technical platform reduces delays and speeds call connection time, saving you money
- Technology is streamlined and simpler to manage
- Improved efficiency and flexibility of calls with automatic call distribution
- Easy to incorporate IP services and management tools
SIP Trunking with UC
SIP trunking provides the technical platform that allows you to add unified communications (UC) for extended collaboration and interaction.
- Instant messaging
- Voice, web and video conferencing
- Unified messaging
- Voice calling
- Team collaboration
- Shared calendar access
SIP Trunking has many features that allow you to have control
- Virtual Telephone Numbers (VTNs) – gives you a local presence with telephone numbers from your desired area code assign to any user, regardless of where the actual person is physically located
- Centralized call delivery allows you to route calls from various locations and answer them centrally, reducing the number of locations and equipment needed
- Calling plans that give you unlimited local, North American long distance and international reach
Migrating to SIP Trunking
In most situations where you have a PBX (Private Branch Exchange), you can keep your own phone equipment and their feature sets as our team of technical experts will help you plan, design and implement the optimal SIP trunking solution to meet your business requirements. This includes tying in multiple branches and remote workers, allowing for alternate access to the Public Switched Telephone Network (PSTN) as backup.
Enhance the Customer Experience
Features such as centralized call delivery and automated call distribution to the next free associate, provides your customers a better consistent experience with decreased wait times and less busy signals.