Written by Beth Hildreth on February 13, 2015

SIP trunking is rapidly becoming a standard for unified communications as enterprises extend communications beyond their IT walls. It is a major shift from the traditional on-premise Private Branch Exchange (PBX) systems that limited communications within and outside organizations.

Businesses want to maximize the use of their Voice over Internet Protocol (VoIP) network not only for improving Public Switched Telephone Network (PSTN) access, but for enhancing communications within their organizations. They want a SIP trunking service with centralized management, quick provisioning, and rapid implementation to interconnect their business phone systems located in dispersed work stations.

Keep business going

SIP trunking capabilities include business continuity solutions to ensure that calls are connected in case of access outages. Newer SIP trunking models are capable of addressing key deployment issues with additional Session Border Controller (SBC) functionality, Quality of Service (QoS) reporting, monitoring of latency, jitter, and packet loss or delay, and identifying bandwidth spikes to prevent attacks and other anomalies.

Boost productivity

Businesses want to save money. SIP trunking can help companies boost their productivity by reducing the number of divergent platforms in the network. A leaner but meaner infrastructure means reduced capital expenses and IT staff training costs. Administrators will consume less time managing complex processes and improve efficiency.

Centralized DID feature

SIP trunking comes with a centralized Direct Inward Dialing (DID) feature that saves cost and time and allows for flexibility. DID enables callers to directly dial desired phone extensions without the need to press additional numbers. It shortens the path to their final destination, and the need for a receptionist or attendant is eliminated.

Avail of feature-rich communication

Not just for voice, SIP trunking was designed to initiate multiple types of real-time communications over the Internet. It has become standard protocol for VoIP and other multimedia and text sessions. Real-time communications may include:

  • Application sharing and collaboration
  • File sharing and transfer
  • Instant messaging
  • Video conferencing
  • Machine-to-machine communication
  • Presence to view who is online

While SIP trunking may be complex, there are best practices that need to be implemented to leverage its benefits. For instance, SIP trunking options need to be rigorously tested and QoS standards followed. Redundancy and diversity are both necessary to ensure reliability and business continuity.

Forward-thinking enterprises should plan for future SIP trunking expansion as their businesses grow. SIP trunks can be spread out across disparate locations to prepare for disasters and minimize the occurrence of organization-wide outages. Finally, a dynamic bandwidth allows enterprises to function effectively and continuously during normal, seasonal, or emergency periods.

SIP trunking has opened a new era of evolution for truly unified communications. Experts foresee an all IP and SIP world where businesses can operate across time zones and geographies and where everyone is reachable anytime and anywhere as long as there is access to the Internet.