Hi Sergey
3.1.1 WireLess
How do you want to route such call types without a postal code?
We only offer Fixed Landline Services. No mobile. So this is not the issue. We know the 'installation' location of every fixed line.
Of course, if a customer takes his phone somewhere else, this is his responsability. A location could also be labeled 'nomadic' to indicate that it is uncertain.
I am in contact with the team @ Swisscom which runs the LIS server. I guess I will be able to clarify many of those questions with them.
Mit freundlichen Grüssen
-Benoît Panizzon-