derivedDataType OnEnumPstnDT

EcimDerivedString with length (0..255) constraint and pattern restriction (All|Tel) where:
All - The call is routed to BGCF (ENS) for all pstn ENUM sub-services, that is, both E2U+pstn:tel and E2U+pstn:sip.
Tel - A E2U+pstn:tel call is routed to BGCF (ENS). A E2U+pstn:sip call will be routed to BGCF (ENS) if the domain is known and user portion in the request URI includes a telephone number. Other E2U+pstn:sip calls will be routed on domain.