derivedDataType TelNoOrEmptyDT

For HTTP based Ml interface configured (EcscfMlInterface=HTTP), the value can be Empty string, or Telephone number with or without + sign in the beginning.

For SIP based Ml interface configured (EcscfMlInterface=SIP), the value can be Empty string, or Telephone number with + sign in the beginning.

When EcscfMlInterface is set to "SIP", the value can be empty or international telephone number. The enforcing check on this restriction will be performed in following two scenarios:
a) If EcscfMlInterface is set to "SIP", any new configured number in EcscfDefaultPSAPNumber will be checked, if it is not empty or international telephone number, the new configured number will be rejected;
b) If EcscfMlInterface setting is changed from "HTTP" to "SIP", the existing value in EcscfDefaultPSAPNumber will be checked against empty or international telephone number, if there is non-compliance, the setting change on EcscfMlInterface will be rejected.


References from:
CscfEmergencyClass;
stringTelNoOrEmptyDT [ 0..1024 ]

Valid values: (^$|\+[0-9]*)
  derivedDataType TelNoOrEmptyDT