Although there are customer available settings in our switch, it is very important that you make all caller ID settings with 11 digits...IE.16167230100.  This is important because domestic USA VoIP termination vendors rely on accurate information sent on between all carriers.

Caller ID setting can be found here:

Customer Portal / Customer info / Service features / Default Valid

If you have any questions or need additional assistance, please contact Midwest SIP support at 616-723-0100.