![]() ![]() However, if this coworker does not answer his cell phone, this call can be forwarded to a voicemail. If a CTO calls any coworker and the call is not answered, because the person was at the lobby receiving a customer, it will be routed to this coworker's cellular phone, which happens to have a Session Initiation Protocol ( SIP) client registered to the PBX using the wireless LAN of the building. They want to keep their co-workers connected, reachable, and available at all times. Nowadays, enterprises are not merely looking for telephonic solutions (PBX) anymore they are looking for integrated, complete, and out-of-the box solutions that allow them be as productive as possible. ![]() The advantages of open source licensing allowed this project to develop features unachievable using traditional telephony devices, at very competitive prices. It was in 1999 when Mark Spencer began a very important project: Asterisk PBX. The world is getting smaller, bandwidth is growing, and protocols are getting increasingly standardised, open, and stable. There is a revolution going on in the telecommunications field these days. Introduction to Elastix Unified Communications System
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