I have been requested to design a solution where it is needed to have several calls active during several hours without any traffic, and still be able to resume a conversation at any moment.
Does anybody know about any particular limitation of using VoIP to accomplish this?
In other terms is there any time limitation for the duration of a VoIP call, either wiht or without voice traffic?
There is as such no restrictions for the Voip call duration. You can see some design guidelines in the following document: