numberE164CheckEnabled

This is the flag to toggle the E164 check for the number field. This is an advanced property which should be used if you know your use case requires it. Use cases:

• false: To allow non-E164 numbers like +001234567890, 1234', or abc`. This is useful for dialing out to non-E164 numbers on your SIP trunks.
• true (default): To allow only E164 numbers like +14155551234. This is for most standard PSTN calls.

If false, the number is still required to only contain alphanumeric characters (regex: /^\+?[a-zA-Z0-9]+$/).
@default true (E164 check is enabled)