SIP trunking is a Voice over Internet Protocol (VoIP) and streaming media service based on the Session Initiation Protocol (SIP) by which Internet telephony service providers (ITSPs) deliver telephone services to customers equipped with SIP-based private branch exchange (IP-PBX)
Session Initiation Protocol (SIP) trunking is the use of voice over IP (VoIP) to facilitate the connection of a private branch exchange (IP-PBX) to the Internet.
In effect, the Internet replaces the conventional telephone company/telephone line, allowing a company to communicate with landline and mobile telephone users worldwide. (SIP is an IETF standard for initiating interactive multimedia user sessions)
In order to take advantage of SIP trunking, an enterprise must have an IP-PBX that connects to all internal end users and an Internet telephony service provider (ITSP) or a gateway that serves as the interface between a NON IP-PBX and the ITSP.
The MAIN Result of utilizing SIP Trunks is Reduced Overall Cost and Enhanced Functionality & Reliability.
With SIP trunking, subscribers can:
•Initiate and receive local calls
•Initiate and receive long-distance calls
•Make emergency calls (911)
•Access directory assistance
•Connect to landline and mobile telephone sets
For enterprises wanting to make full use of their installed IP-PBXs and not only communicate over IP within the enterprise, but also outside the enterprise a SIP trunk provided by an Internet Telephony Service Provider (ITSP) to connect to the traditional Public Switched Telephone Network (PSTN) network is the solution. Unlike in traditional telephony, where bundles of physical wires were once delivered from the service provider to a business, a SIP trunk allows a company to replace these traditional fixed PSTN lines with PSTN connectivity via a SIP trunking service provider on the Internet.
SIP trunks can offer significant cost-savings for enterprises, eliminating the need for local PSTN gateways or costly T1/PRIs.
There are three components necessary to successfully deploy SIP trunks: a PBX with a SIP-enabled trunk side, an enterprise edge device understanding SIP and an Internet telephony or SIP trunking service provider.
The IP-PBX (telephone system)
In most cases the PBX is an IP-based PBX, communicating with all endpoints over IP, but it may just as well be a traditional digital or analog PBX. The sole requirement is that an interface for SIP trunking connectivity is available.
The enterprise border element (Firewall)
The PBX on the LAN connects to the ITSP via the enterprise border element.The enterprise edge component can either be a firewall with complete support for SIP or an edge device connected to the firewall, handling the traversal of the SIP traffic.
The ITSP
On the Internet, the ITSP (Internet Telephone Service Provider) provides connectivity to the PSTN (Public Switched Telephone Network) for communication with mobile and fixed phones.
AccessLine is our preferred ITSP.
About AccessLine
For over 20 years, AccessLine Communications has been meeting the exacting communications quality standards of Fortune 50 companies like IBM, Hewlett Packard, Standard Register, Federal Express, Sun/Oracle, and Internap. Now, AccessLine offers this proven network performance to you.
Intermedia acquired AccessLine
On August 30th 2013, Intermedia completed its acquisition of AccessLine, your leading provider of cloud-based phone and voice services.
About Intermedia:
Intermedia is the premier provider of cloud services to small and mid-sized businesses. Delivered from Intermedia’s secure datacenters, these services include hosted Microsoft Exchange email, VoIP telephony, instant messaging, file management, security, backup, support for the full range of smartphones and tablets, and more. The company’s proprietary cloud infrastructure assures high reliability, and a certified support team is available around the clock. Intermedia also empowers thousands of partners – including managed service providers and select Fortune 500 companies – to sell cloud services. Founded in 1995, Intermedia was the first company to offer business-class cloud email and now has 600,000 premium hosted Exchange mailboxes under management — more than any other provider.
About ECS
ECS, headquartered in Auburn, WA, is a team of experts ready to help businesses with the important and often complicated decision of finding the best communication solutions for their company, from voice to data. Servicing Washington & Oregon, ECS is an Avaya SME Expert Business Partner focusing on the IP Office platform and specializing in Voice over IP. For more information contact ECS at (253) 886-5400 or visit us on the web at www.GoECS.com
Want to learn more?
www.Intermedia.com
www.accessline.com
www.GoECS.com