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pbxnsip IP PBX is designed and built to use Open Standards.
Open Standard means using a protocol which is defined by a group or member structure. A common Open Standard protocol is HTTP, it is designed by a group and everyone maintains the standards.
pbxnsip, as the name suggests, uses the Session Initiation Protocol (SIP). pbxnsip IP PBX software acts as the core to a PBX solution. To enable a full deployment of your IP PBX, other componants are required...
- IP Phones
- Softphones
- Adapters
- PSTN Gateways
- PSTN Cards
- ITSPs
- Microsoft Exchange
- Microsoft OCS
1. The pbxnsip PBX server is the core of the enterprise communication system.
2. It is connected to the companies local area network (LAN) which provides enough bandwidth to transport data and voice.
3. Typically most of the SIP-phones (IP Phones) are registered inside the LAN to the PBX. They can make internal calls and they can call the PBX to check the mailbox.
4. The PC in the network can access the PBX through the LAN. This makes computer telephony-integration simple. The PBX can initiate phone calls from an address book, run soft phones that are registered to the PBX and/or use the web browser to log into the PBX and change settings, initiate conference calls or check call lists.
5. If the LAN contains WiFi access points, cordless devices can be registered to the PBX just like other SIP devices. If the access point includes routing functionality, the WiFi phones can hang off a subnet. Other devices like DECT-enabled devices are registered as regular SIP phones.
6. In order to make phone calls into the PSTN, typically a PSTN gateway is being employed. This makes sure that there is excellent audio quality and that phone calls are possible even if the Internet connection should be down.
7. Calls can be routed to regular PSTN destinations such as old analog phones.
8. Calls to cell phones that are associated to extensions are also run over the PSTN gateway. These calls can run in parallel to the ringing of internal extensions and whoever picks up first will get the call.
9. Many companies also would like to include the public Internet in their communication infrastructure.
10. In order to reach the the Internet, the PBX needs to go through the corporate firewall. This can be done by assigning a second IP address to the PBX which can be routed from the public Internet.
11. Regular SIP phones can be registered through the public Internet. The built-in mini-SBC of the PBX will take care about home DSL routers and make sure that those phones can register to the PBX.
12. If public WiFi access points are available, the PBX can even keep registrations of WiFi-enabled cell phones alive and integrate them as regular extension into the corporate communication infrastructure.
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