MC60 Module Restarts at LOW network area

We are using MC60 Module in one of our solutions. When there is low signal, module tries to register and restart itself within a few seconds. If there is good network works fine or if there is no network at all then also works fine. Please help us to find root cause for the issue.

Restarts or hangs? In my situation it hangs due not enough power supply, solved by super capacitor.

It gets restarts.
How much power it is taking while registering on network ???

According to documentation short jump up to 700 mA. Look “BC66 Hardware Design” 3.6.2. Reference Design for Power Supply.