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  What Are Some Advantages of VoIP? Because Internet Voice is digital, it may offer features and services that are not available with a traditional phone. If you have a broadband internet connection, you need not maintain and pay the additional cost for a line just to make telephone calls. With many Internet Voice plans you can talk for as long as you want with any person in the world (the requirement is that the other person has an Internet connection).  You can also talk with many people at the same time without any additional cost. IP PBX Asterisk , Voice over Internet Protocol, also called VoIP, IP Telephony , Internet telephony, Broadband telephony, Broadband Phone and Voice over Broadband is the routing of voice conversations over the Internet or through any other IP-based network.

           ISDN BRI and ISDN PRI Services   There are two main services associated with ISDN Basic Rate Interface (BRI) and Primary Rate Interface (PRI). Both services consist of multiple channels over which data can be sent (known as B channels) and also include a signaling channel (the D channel). The D channel is used for control and signaling purposes, such as setting and tearing down ISDN call. Referred to as out-of-band signaling, this method ensures that other ISDN calls do not interfere with existing connections, that bandwidth on the B channels is reserved for data only, and ultimately results in quicker call setup and teardown. TE110PE Basic Rate Interface (BRI) ISDN Basic Rate Interface ISDN is made up of two 64 Kbps B channels that are used for sending and receiving data in full duplex, and one 16K D channel for signaling. I...

  What is IVR ? IVR (Interactive Voice Response) The Digital Receptionist menu within the FreePBX interface provides for Interactive Voice Response (IVR) menus. A well designed IVR system is one of the key features that can give a company a very professional appearance. An example of an IVR menu would go like this: "Thank you for calling American Widgets, for sales press 1, for support press 2, for a company directory press the pound key, or you may dial an extension at any time" FreePBX interface allows us to easily build complex, multi-branching voice menus to help route callers to appropriate departments. For example, once a user presses "2" for support, another menu will ask the user to "press 1 for the Presidio model line, press 2 for the Pendleton model line". Using the IVR menu system, we can route any valid key sequence to another me...

        Difference Between Asterisk and Issabel,VitalPBX The simplest way of looking at it is that Asterisk is simply one of the many components of Issabel,VitalPBX. While Asterisk is the actual PBX software, Issabel,VitalPBX is a self-installing package that installs a complete operating system, Asterisk PBX, and all the supporting components as listed in the previous section. The core strength of Issabel,VitalPBX lies in its simple setup and FreePBX (the web interface). This book will cover FreePBX in detail for the configuration of our PBX system as well as the other components. Voip ： voice over internet protocol To get an Asterisk phone system up and running, we would have to pick a supported Linux distribution, install the distribution, configure it securely, and then install Asterisk and configure that. With Issabel,VitalPBX we have one installation routine, which not...

  The PRI (PRI : Primary Rate Interface) is a telecommunications interface standard used on an ISDN (ISDN: Integrated Services Digital Network) for carrying multiple voice and data transmissions between the network and end users. PRI is the standard for providing telecommunication services to businesses,offices,hotels,schools and home.There are 3 types of PRI.It is based on the E1 is common in Europe,Asia,South America and Australia,while T1 transmission in the US, Canada, and J1 in Japan. The T1 line consists of 23 bearer (B) channels and one data (D) channel for control purposes. The E1 carrier provides 30 B- and one D-channel for a bandwidth of 2.048 Mbit/s. ISDN PRI cards have 1/2/4 E1/T1 ports, with PCI/PCIE interface.They support Asterisk,FreePBX,Issabel,VitalPBX,Dahdi ...  Users can build a VoIP phone PBX ,Asterisk phone system,call center for enterprises,offices,hotels,schools,business,home...

  Issabel Server : Asterisk PBX Issabel is Powered By Asterisk. Issabel is an Open Source Software that brings together IP Communications Services in one place It's a platform that simplifies the management of your business interaction channels, incorporating a Telephone exchange (VoIP) with email, CRM, fax, videoconference, recording, reports and more. And it is free,download it from www.issabel.org All of ChinaRoby's Asterisk cards can wok with Issabel. With Issabel and ChinaRoby's Asterisk cards,users can build an Asterisk IP PBX ,VoIP Phone System,call centre,Issabel server for home / businesses / hotels / schools ...

  What is Asterisk  IP PBX ? Asterisk is one of the world's leading open source softwares, telephone PBX platforms. With Asterisk cards ( FXS cards,FXO cards,PRI T1 cards,PRI E1 cards),Asterisk can convert a general purpose computer into a VoIP communications solution ,free phone PBX server,phone system for home / small business / school,hotel,office etc . Asterisk IP PBX , VoIP Phone system used by all kinds of home / Soho / companies / business / schools / hotels to improve their communication solution. Asterisk is the market leader in open source VoIP PBX (Asterisk PBX).There are many voip phone appliances softwares based on Asterisk to meet all kinds of requirement .such as FreePBX,Issabel ,VitalPBX,ViciBOX ... They are great communication servers in functionality, scalable and sophisticated than those available today. Asterisk software is free to download,it...