On inbound calls, the caller dials a toll-free number which is routed over the Public Switched Telephony Network (PSTN) to the DOW Networks Gateway and Server.
There, all calls are first packetized as data and then routed to your location over the internet. The ethernet port on the Cisco IAD (Inegrated Access Device) located on the customer's premise will have an assigned public IP address that is pre-registered in the DOW Networks server(s).
At your location, the packets travel through to your router to your Ethernet Hub, and are then handed off to the IAD. The IAD then converts the data packets back into voice calls (either analog or digital, depending on your PBX) and hands the call off to the PBX. The PBX distributes the call to your phones as it normally does so that you retain all your current PBX functionality and your current phones.
Each call requires 16k of internet bandwidth and the IAD on the customer's premise needs to have a public IP address assigned to it. Example: if you have a 16 port IAD, you will need to have 256k of internet bandwidth dedicated for your calls (16 calls X 16k = 256k).
On outbound calls from your location, the call is generated from your phone through the PBX and handed off to the IAD. The IAD converts the voice call into data packets and hands them off to the router. The router then sends the packets back to the DOW Networks Gateway and Server where the whole inbound process in played out in reverse.
Note: Alternate configurations may be possible. |
VoIP Solutions
