This article provides information about a behavior experienced by Hunt Group users, where calls only ring a couple of times before bouncing.
Hunt Groups are used to ring groups of users using the same number, either at the same time or sequentially.
If you notice calls to a user in your Hunt Group only ring a specific number of times and then stop, it is possible the call is not being rejected. Rather, it is being redirected to the next user in the Hunt Group, because the Hunt Group is configured to ring sequentially and advance after a specific number of rings. You can modify this setting to allow more time for the agent to answer by editing the Hunt Group's routing configuration and increasing the value for the Rings field under the Advance after a set number of rings checkbox.