TMCnet asked Peter Sandstrom, CTO at BandTel (News - Alert), to answer some questions about SIP
trunking—what it is, how it works, what it’s used for.
What is SIP trunking?
SIP Trunking is a mechanism used to interconnect SIP enabled PBXs and/or SIP user agents to each other to establish voice sessions between each other over an IP network. SIP trunks allow for call control and routing, enabling enterprises to create a single, pure IP connection.
What is SIP trunking used for?
SIP Trunking is used to provide a pure IP connection between the enterprise and the carrier. It has emerged as a viable alternative to legacy and fixed-line circuits for the establishment and transmission of voice communications.
How does SIP trunking make VoIP telephony more reliable and easier to use?
With SIP Trunking, only one IP-based connection needs to be maintained for both data and voice. Eliminating the need for several circuits translates to fewer interfaces, reducing costs and increasing efficiency. Businesses may choose to re-invest these savings in maintaining diverse and redundant IP-based connections to ensure superior reliability and security.
How does SIP trunking empower businesses to use VoIP with their existing, legacy systems?
SIP enables businesses to easily transition to VoIP without having to replace their legacy systems. This reduces telecom costs by combining voice and data over a single IP connection and maximizing bandwidth usage. It allows enterprises to deploy VoIP services. Now they can use voice termination and origination services over their existing pipes for reduced telecom costs.
How does SIP trunking benefit call centers?
That’s pretty simple: SIP trunking reduces expenses for call centers.
How does SIP trunking benefit enterprises?
SIP trunking reduces the cost of communication while delivering productivity and application benefits that emerge from SIP’s role as the enabler of converged multimedia services. Costs are reduced because the enterprise’s PBXs have a pure connection to the carrier’s PSTN gateways. Some features include disaster recovery, on-demand provisioning of lines, direct inward dialing (DID) and toll free numbers, and geographic abstraction of local DIDs.
How does SIP trunking benefit small to medium-sized businesses (SMBs)?
Again the answer is pretty simple: SIP trunking offers SMBs low-cost IP telephony.
How does SIP trunking benefit resellers?
For resellers, SIP Trunking reduces quality problems which in turn will increase their business.
What is N-Plus?
BandTel’s N-Plus network is based on several pairs of DNS servers that direct the SIP calls to SIP Signaling Transfer Points (STPs), which in turn direct those SIP calls to an “N” SIP proxy in the BandTel SIP matrix.
How does N-Plus differ from other SIP trunking solutions?
BandTel’s new N-Plus solution lifts the burden placed upon even the fastest servers by creating a clustered architecture that that eliminates the need for numerous IP addresses on numerous SIP proxies. N-Plus also eliminates any single point of failure.
What else should people know about SIP trunking and N-Plus?
The N-Plus architecture allows BandTel to deploy any number of SIP proxies (N-Plus) to handle the load required for any given call to any given end point. There is no processing limit and no need for the user agents to hard code a carrier’s proxy address into their network configuration schemas.
To learn more about SIP trunking, check out BandTel’s TMCnet.com channel, SIP Trunking.
For more about next-gen communications, check out this white paper: Connectivity Challenges for Real-time IP Communications—just one of the reference documents available in TMCnet’s White Paper Library. After perusing the library, make sure you hop on over to the Communications Developer Conference site to register and get additional info about the event (May 14-17, 2007 at the Hyatt Regency Santa Clara, California)—where you can learn how to build the next generation of IP-based communications products and services.
Mae Kowalke previously wrote for Cleveland Magazine in Ohio and The Burlington Free Press in Vermont. To see more of her articles, please visit Mae Kowalke’s columnist page. Also check out her Wireless Mobility blog.
Voice over IP (VoIP) | X |
| A real-time communications system that converts voice into digital packets containing media and signaling data that travel over networks using Internet Protocol....more |
Public Switched Telephone Network (PSTN) | X |
| A PSTN number is a dialed call which is switched or connected via a CO switching system called a Class 5 End office or in SS7....more |
Domain Name Server (DNS) | X |
| DNS basic functions provide:
- A way to identify computers like phone numbers.
- Servers called Proxy Servers change web site URL-Uniform Resource Locator words and names such as www.techtionary.com...more |
Internet Protocol (IP) | X |
| IP stands for Internet Protocol, a data-networking protocol developed throughout the 1980s. It is the established standard protocol for transmitting and receiving data
in packets over the Internet. I...more |
Session Initiation Protocol (SIP) | X |
| SIP is the real-time communication protocol for VoIP. SIP is a signaling protocol for Internet conferencing, telephony, presence, events notification (emergency calling) and instant messaging.
SIP...more |
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