VoIP Software Asterisk

VoIP Software Asterisk



so let's find out what Asterix is and what it can do for you Asterix is a free communications framework meaning it is the glue for all of your communication methods for example voice phone calls integrating with video conferencing or mixing instant messaging and cell phone texting Asterix is a platform that will give users the ability to create applications to solve communication problems Asterix at its most basic layer is a private branch exchange or PBX a PBX is a phone system which allows for extensions voice calling voice mail group paging Conference bridges automated attendance and a host of other telephony applications asterisks can be a simple PBX to a very complex telephony application over the years Unified Communications has become quite the industry buzzword so Asterix has evolved to embrace this new trend unified communications is meant to merge communication technologies into a single system which in this case is asterisks Asterix started back in 1999 when Mark Spencer released the first code using the general public license his interest in telephony steered him towards using computers and networks to provide telephony applications this was the start of something bigger since at the time proprietary phone systems were very expensive and ruled by the likes of Avaya and Nortel with his technology users were able to replace their hundred thousand dollar Avaya phone system with asterisk free software running on a free linux operating system only incurring costs for the hardware like servers and IP phones asterisk is now being maintained by the asterisk community in Digium the companies started by mark Asterix was developed using Linux but has since been ported to many other operating systems I would strongly recommend using a Linux server since they are very stable and still are the preferred method for deploying asterisks since its inception Astrix has had a warm welcoming across the world and the community continues to expand its capabilities to include other countries telephony requirements asterisks has lowered the price barrier of getting an enterprise level phone system Astrix is efficient enough to run on small embedded devices like a Lix boards which I included a link to in the lecture resources these work great for small businesses and run on solid-state hardware also it can coexist with routers on an open wrt device sipper session initiated protocol is the preferred method of communications sip is very robust and there are many sip carriers to provide PSTN or public switched telephone network connectivity I will be using the acronym PSTN pretty often and this just means public dial tone where I could place a phone call to a cell phone or any other real phone number now that we have extensively covered what asterisks is let's figure out what it can do for you some of the common features of asterisk systems include voice calling allowing users to make internal extension to extension phone calls domestic phone calls or even international phone calls these can be sent over a phone line a t1 or e1 or even using a sip carrier voicemail is included by default and allows you to set up voicemail to email and can be used as a voice mail server conference call bridges are easy to set up using asterisks they are flexible and have many options such as playing enter and exit tones or locking it with a pin code call recording can be set up on asterisks to record the whole phone call or do on-demand call recording automated attendant menus are great to allow callers self-service and to get them to the right department for example press one for sales press two for marketing or press nine for customer service automatic call distribution is typically used in contact or call center environments to distribute the phone calls to agents evenly speech recognition can be accomplished using asterisks and third-party tools click to call from a webpage allows users to enter a phone number and asterisks will call that number videoconferencing is built into asterisks and just requires configuration of the system Auto or predictive dialers are common in call centers so with the asterisks you can have a system act as a dialer to eliminate the expensive dialer hardware from Noble or other dialer providers you can host your own dialing interface and customize it specifically for your call center there are many versions of asterisks so we should talk about what they are the original version of asterisks was 1.0 followed by 1.2 1.4 1.6 and 1.8 which is still being supported all versions prior to 1.8 are no longer supported and should not be used the current methodology for version numbers is 10 11 12 and the latest being asterisks 13 the difference between all of these versions is little but it can depend on what you're used for asterisks is for the purposes of the upcoming lab we're going to use certified asterisks 11 due to its long term support and stability I strongly recommend using a certified version so you're not compiling the latest version every other month most of the time asterisks config files are going to be backwards compatible it is rare that changes to the software will remove features typically is more about adding features and improving functionality before we get to the lab I do want to point out the prerequisite packages that are required to compile asterisks from source on a Linux system don't worry if you don't understand this we're going to walk through this by step in the lab once these packages are installed compiling Asterix from source will be as easy as a few commands so let's get this wrapped up and jump into the lab so you can get your hands on an asterisk system this is the end of the lecture so you are now ready to tackle our first lab proceed to the next lecture and it will be a follows follow along step by step lab

Leave a Reply

Your email address will not be published. Required fields are marked *