SIP for Business Travelers: Open Access Software
Session Initiation Protocol (SIP) is the technology through which VoIP communication is delivered. SIP can be used on an enterprise-grade level to provide international marketers and business travelers with a cost-efficient method of worldwide telecommunications access.
How SIP Works
SIP is delivered via a method called “trunking,” which eliminates the need for traditional phone lines by combining voice and data signals over a single IP circuit. SIP can be used both to initiate small-scale VoIP communications and host business-grade IP PBX phone systems.
Why SIP?
So why use SIP in lieu of the more traditional Public Switched Telephone Network (PSTN)? There are many advantages to initiating SIP communications. For business travelers, SIP can increase both telecommunications reliability and cost efficiency. The following are a few features of SIP calling that are gaining rapid popularity in the business world:
- IP PBX: IP PBX, also known as hosted PBX, is a recently developed telephony system that enables the virtual management of business telecommunications. IP PBX systems reduce business overheads by eliminating the necessity of equipment installation and maintenance. These third-party call centers generally use a combination of SIP and traditional calling methods to guarantee communications connectivity. IP PBX systems are ideal for business travelers, reducing the cost of international telecommunications by up to 70% while ensuring connectivity to even the most remote of locations.
- Voicemail and Fax Conversion: Business traveler communications are often limited by roaming charges and equipment inaccessibility. SIP technology enables automatic voicemail and fax email forwarding, allowing travelers whose mobile devices are incompatible with local networks to access voicemail and fax communications via any wifi hotspot.
- Cheap International Calling: Because SIP calls are not routed traditionally,even businesses with high-volume international call traffic can utilize SIP circuits without incurring high toll and roaming charges. Business travelers can use toll-free SIP lines or free VoIP applications to communicate at low cost with employees, co workers and clients while on the road.
- 24/7 International Connectivity: By routing calls through the internet, SIP technology enables business travelers to stay connected 24/7 without incurring any extra telephone usage charges. In addition to facilitating free business and conference calls while on the road, SIP makes tablet and computer calling possible, ensuring that travelers whose phones are not compatible with international call networks need not lose service.
SIP Technology
So how does SIP technology work to deliver all of these low-cost international calling features? SIP was developed in response to consumer demand for a cheap, scalable communications system whose functionality was not exclusively reliant upon fallible phone lines. The SIP process can be broken down into the following basic steps:
- SIP users are assigned SIP addresses that serve to identify them on the SIP network
- When a SIP user initiates a call, a SIP request is sent to the callee address
- If the callee is available, a connection is established and a SIP session is begun
- If the end point cannot be reached, or the request fails to connect, SIP returns a message to the caller indicating that a session could not be initiated
- If a call is transferred mid-session, SIP redirects the call to a new endpoint
- When the session is complete, SIP logs and terminates the call
Area Code
At AreaCode.org, you'll find helpful information on area codes, including area code location. Other phone area codes may be found using AreaCode.org's area code locator. Use the search function for area code look up. Toll Free Number with no setup fees. Toll Free Number with lots of great features.
Area Codes
AreaCode.org is an area code directory with helpful information on the various United States area codes, area code listing, and other area code phone details. AreaCode.org also list international area codes within the North American Numbering Plan. We offer the best UK telephone number and manage many smart features online. UK Telephone Number made simple with TollFreeForwarding.com.
Area Code Finder
Find area codes by using AreaCode.org's area code finder. AreaCode.org provides an area codes map of area codes United States. Area zip codes are different than area codes for calling.
Area Code Lookup
AreaCode.org is an excellent resource for area code lookup and area codes phone information. Here you'll find an area codes list of area codes within the United States, plus Canada area codes.
Area Code Map
For a full list of area codes, visit AreaCode.org. It provides USA area codes and an area code map. Mexico area code is not included in the North American Numbering Plan.
Telephone Area Codes
AreaCode.org is a resource of North American telephone area codes. Beyond area code listings, relevant information about each area code is detailed. You can also search area codes by state, and within the NANP, find country area codes.
Area Codes Locator
The area codes locator shows the coverage area for each phone number area code. Area code locations are also listed by city next to the area code maps on this page.
Area Code Search
Find area codes using the area code search function on AreaCode.org. With area codes search, you can find city area codes in the United States, Canada and elsewhere.
Area Code Location
AreaCode.org shows you the area code location covered by each area code; for example, the LA area code coverage area in Los Angeles. State area codes may be found using AreaCode.org, but Mexico area codes are not included.
Telephone Area Code
The telephone area code is dialed before the local number. For area codes by city, search AreaCode.org. Area codes telephone differ from region to region, and in some places the area code must be dialed even when calling locally within that region. Find out more with area code decoder.