SIP Trunking uses Session Initiation Protocol (SIP), a signaling communications protocol commonly used for Voice over IP (VoIP), to deliver voice calls over a data circuit. Businesses use SIP Trunking to replace existing telephone lines that connect internal phone systems with the Public Switched Telephone Network (PSTN). Rather than using a dedicated circuit for your phone calls, SIP Trunking uses a data connection to carry both voice and data and allows for as many voice calls as bandwidth allows.
Smaller businesses reduce costs by combining voice and internet connections, often combining two or more circuits to a single connection. Larger businesses reduce costs by centralizing all local service from many locations into one or two central SIP Trunking locations.
SIP trunks can be added or deleted for seasonal fluctuations without adding or deleting circuits. They also are not bound to a physical location, so it is simple to move office space or set up new offices.
Smaller businesses reduce complexity by combining voice and internet connections. Larger businesses reduce complexity by centralizing. Troubleshooting, and telephony management also becomes centralized.
After combining many location’s circuits to a central SIP Trunk, having a redundant path is important to maintain connectivity during failure conditions. You can take advantage of alternate trunk routing, or other means to re-direct calls near instantly in the event of a disaster.
With AT&T SIP trunking services, you can integrate voice and data into one network, and see better utilization of your network capacity.
Organizations look at the following criteria as they assess a transition to SIP trunking
The total number of phones you have throughout the enterprise will likely determine the configuration and capacity you require.
How many simultaneous calls do you need to handle at your peak call traffic? Think of SIP trunks like concurrent call paths; regardless of how many telephone numbers or Direct Inward Dial numbers (DID’s) you have, your number of SIP trunks will determine how many simultaneous calls you can make at any given time.
SIP Trunk Routers can be configured to support many legacy phone systems, as well as newer IP-PBXs.
If you are using your main internet connection for your SIP trunks, you will want to ensure that your internet bandwidth is large enough to support both your normal daily online usage as well as your call volume.
Share this with others
Streamline your processes and run your business more efficiently
Improve productivity by relying on the security of the cloud with the performance capabilities and solutions you need
Stay connected in and out of the office, virtually anytime, anywhere, to get work done faster and easier than ever
Protect your business from cyber criminals, data breaches, natural disasters, and more
Connect and monitor assets from virtually anywhere for maximum productivity
Get the word out about your products and services by using the latest hardware, software, and other technology
Streamline collaboration, communication, and management to mobilize people, processes, and assets
Experience greater bandwidth, security, intelligence, simplicity, scalability, and flexibility in an integrated single network platform
Sign up for the AT&T Business newsletter
Please provide the following information to access your document:
* To access your content, please check your browser settings to make sure pop-up windows are allowed.