End User Changes TSP

Steps

1. End User wants to port his TN to a new TSP (TSPn).

2. TSPn contacts T1E for the ENUM service for the TN, provides its

default T2E info., and receives End User-selected T2E info.

3. T1E informs T2E about TSP change and TSPn’s default T2E info.

4. TSPn interacts with T2E to provision its NAPTR RRs, or T2E

retrieves the NAPTR RRs from TSPn’s default T2E.

5. In synchronization with the activation for the ported TN, T1E

informs T2E to switch to TSPn’s NAPTR RRs.

T2E

T1E

TSPn

End User

1

3,5

2

4

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