What is required if it don't has a solution for a customer-on-call?
When the solution is unknown, the best way to handle a customer is to politely ask the caller to hold the line while you connect the call to the appropriate person. In the case of tech support, this could be a niche specific engineer, and in case of call centers, this could be a person-in-charge or the oversee manager.
BY Best Interview Question ON 29 Mar 2020