Does SIP allows multiple active media sessions?

SIP
1

When user A is in active call with B, User A wants to make another call to user C. To do this, does call between A and B required to be on hold or required to be terminated?
Does SIP or IMS allows multiple active media sessions??

If no, then why it is not allowed? What is the limitation in terms of SIP?
Will network allow this?

2

Hi

Active media sessions are limited by the channels , each number comes with 2 incoming channels at the moment, we’ll be able to offer more soon

No need to terminate an active call, it can be set on hold and there are no limitations as far as outgoing calls

Let us know if you have any other questions