Busy Lamp Field (BLF) - a set of illuminated buttons on a physical phone that provide visual indication for busy (usually red light) and available (usually green light) lines and extension on the PBX system. The buttons can also be pushed to dial an available line or extension. The TeleConsole has software settings to set up BLF. Read about it and the difference from speed dial here.
Call Flow - a call between two private individuals usually involves only two interactive points - a source and a destination (that is not to say the call does not get routed more times on the national phone system. But the routing is automatic and non-interactive). A call in a PBX system, on the other hand, can have many more interactive points along the way. It may arrive in the IVR, get routed to a department, get placed in a hold queue, and then get picked up by an agent. The progress of the call between these points is referred to as the Call Flow. Call flows information, including any relevant recordings, can be observed with the call logs function in either the ACD Panel or Analytics or by sending this API request.
Circuit switching - a network connection method where a dedicated wiring path is established between a source and a destination before the transmission occurs. Circuit switching is traditionally used with analog telephone communication. A continuous wire connection is created in the telephone exchanges once a call is from one telephone is picked up by the recipient. While the connection is in session the only data that travels on it is between the two connected phones. The data is sent continuously and in sequence, unlike the divided data in Packet Switching. This gurantee call quality and reliability at the expense of lesser network capacity (since lines can't be shared).
FXS - stands for Foreign Exchange Subscriber. It is a type of port on analog telephony network (or POTS service) that delivers the analog signal and electric current from a phone company (or the PSTN) to an FXO port (see next term) on analog telephone, fax machine, or other analog devices (the FXO port provides an on-hook/off-hook indication to start and end a call). Offices that have existing FXS ports can connect them to an IP network using a VoIP gateway, a device that can convert multiple analog lines to digital VoIP data.
FXO - stands for Foreign Exchange Office. It is the port that receives the analog telephony equipment that receives the analog signal delivered from an analog FXS port (see pervious term). Because the signal from the FXS port is continuous, the FXO port is required in order to provides an on-hook/off-hook indication to start and end a call. Offices that have existing equipment with FXO ports only can connect them to an IP network using an ATA adapter.
IPv4/IPv6 - the Internet Protocol is a communication addressing system used to identify devices on a network and across the Internet. IPv4 (Internet Protocol Version 4) is its fourth revision and most widely used. It is a 32 bit addressing system which limits it to about 4.3 billion devices. With growing number of computing devices (especially smart phones) this limit will be reached in the forseeable future. To deal with this the IPv6 version was introduced. It is a 128 bit addressing system with more than 3 Duodecillion possible addresses (3 followed by 38 numbers). It also offers additional configuration, routing and privacy benefits. Presently both formats are in use alongside each other and implementation of IPv6 depends on both server and devices support. Your SIP or IP phone are assigned either an IPv4 or IPv6 address when they are provisioned.
ISP - Internet Service Provider is a company that provides your business with connectivity to the Internet. The ISP usually provides both the physical wiring infrastructure (cable, phone lines, fiber optics etc) and the networking access that enables Internet traffic over the wiring. In some rare cases the infrastructure and networking are provided by two different companies, but usually your available infrastructure will also dictate your choice of ISP. Your ISP also gives you a router to facilitate the Internet connectivity. Not all routers may be compatible with VoIP or with Telebroad's services out of the box, but we do have some guidelines of how to adjust them for such functionality. Our support team will occasionally refer you to your ISP if they think an issue with your Telebroad account is due to Internet connectivity problem rather than a problem on our end.