One Phone Number, multiple lines (hunting?)

I’ve found tutorials and guides for virtually everything I need to deal with Asterisk but I haven’t found one that explains how to get one phone number from a voip provider that allows more than one concurrent conversation. It seems that you can get one DID number with multiple channels although I haven’t found a voip provide that says that on their web page so I’m not sure if that’s the correct way to say it.

In addition, I haven’t seen examples of dialplans that show how to handle concurrent calls. Ideally, I’d just like to queue the second call until the first is finished with an option to leave a voicemail if they’re getting tired of waiting.

Anyone seen any guides that talk about how to configure Asterisk for this and anyone know of any voip providers that are compatible with this?

what happens to the second caller right now?

On VoIP, any limitation of a DID number to a single concurrent call would be a commercial decision by the ITSP. There are no natural limits to the number of concurrent calls that apply to a single number, rather than the aggregate traffic.

I would expect the same on ISDN, although there will be a hard aggregate limit.

As long as you don’t try and use a service intended for home users, you should get multiple concurrent calls out of the box.

For VoIP, there is no hunting involved. For ISDN, the hunting should be done across channels shared by all your DIDs.