SIP Trunking
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Session Initiation Protocol (SIP) trunking is a service offered by a communications service provider that uses the protocol to provision voice over IP (VoIP) connectivity between an on-premises phone system and the public switched telephone network (PSTN). SIP is used for call establishment, management and teardown. SIP trunking is typically sold as a replacement for digital Primary Rate Interfaces (PRIs), which are based on time-division multiplexing (TDM).
SIP trunking is widely deployed by communications service providers across the globe, many of which are using it to replace their TDM-based services. By delivering SIP trunking over existing Ethernet or Multiprotocol Label Switching (MPLS) network infrastructure, the providers reduce the cost and management complexity associated with legacy digital platforms, while also provisioning additional features.
Benefits of SIP Trunking
Cost Savings
With traditional phone service, your organization is subject to different, often mystifying charges for your local, long distance, and international calling. SIP trunking allows organizations instant access to simple, understandable pricing that’s generally billed on a per-user basis.
Instead of monthly shock and confusion over your voice communications statement, organizations that switch to a SIP provider usually enjoy predictable monthly costs.
Immediate ROI
With many technology investments, organizations may not appreciate returns on investment for years. In some cases, the tech investment is a gamble due to a lack of case studies providing ROI. Fortunately, SIP is a well-established technology with minimal upfront investment costs. Without a capital investment, organizations who switch to SIP begin appreciating cost savings from the first monthly billing statement.
Scalability
SIP supports your organization’s need for fast growth across multiple geographic locations. By combining your voice and data into a single network, your geographic locations and remote workers can be consolidated. The fast scalability of SIP also allows your organization to scale with extreme flexibility as you open new sites or establish full-time remote workers.
Unified Communications (UC)
SIP can act as a gateway towards Unified Communications as a Service (UCaaS). When selecting a SIP provider that offers a full suite of communication tools such as video conferencing and fiber-optic Internet connectivity, your organization can unlock the benefits of an IP-based communications suite that includes mobility, instant messaging, collaboration apps, and other flexible, cloud-based tools for business productivity.
Mobility
SIP allows your organizations to connect your employees’ mobile devices via flexible, user-friendly VoIP apps that can be securely installed. This allows your mobile workers to remain connected to your on-premise based communication systems, and fully reachable at all times via a single, dedicated business phone line. The mobility attributes of SIP and VoIP also enable organizations to maintain communications if the Internet connection fails.