When you have bought a suitable SIP trunk, and have gotten your account information from the provider, we can continue, and set it up. Everyone wants to sell a service, nothing wrong with that, but watch out for VOIP-providers that explicitly filter connections from users own Asterisk-servers. Some companies don’t want people to run their own PBXs and create their own services, for free, and with the freedom that comes with using Asterisk, they want you to pay for their services, like voicemail, “answering machines”, and such. What they really do though, is set up a SIP trunk between a device in your home, and their telephone switch, which may very well be Asterisk, in many cases it is. Some doesn’t call it a SIP trunk though, they call it simply “Broadband Telephony”, or “VOIP Service”, and so on. There are many companies offering SIP trunks.
Through a trunk, many calls can be sent, the limit is only your bandwidth and computer resources at the machine where your Asterisk runs, unless your VOIP-provider, or you for that matter, limit the number of calls in some way (by configuring the PBX at either end of the trunk), that are allowed to go through it. If you also have a DID (Direct Inward Dialing) number at the provider, calls made to you are forwarded to your Asterisk PBX, then you switch the calls as you see fit. And if you also have a telephone number ( DID) associated with the trunk, for others to be able to dial your phones, through your Asterisk PBX.Ī SIP trunk is often defined using many buzz- and marketing words throughout the web, but, what it basically is, is a two-way connection to a VOIP-provider, that routes the calls you send to it, out on the PSTN for you, and charges you for the calls you make.
#Incoming call from asterisk how to#
This time I will show you how to configure a SIP trunk, and add extensions in the dialplan so that the telephones can dial out through the trunk.
We also created two additional extensions for test purposes. In my previous article we configured Asterisk with some SIP-devices, and created a basic dialplan so that they could dial eachother.
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