number gets stuttered dial tone instead of ringback Possible problem The remote caller has tried to reach a Norstar target line, but has reached a trunk with DISA instead. Alternatively, the Norstar system has mapped incoming digits onto the DISA DN. Solution 1. Verify all the digit strings that the switch should be sending. 2. Check that you have defined a corresponding Received number for every target line in your system. 3. Check that you have defined the correct DISA DN for your system. 4. Make sure that the published telephone numbers for your network are correct. Dialed number gets dial tone instead of ringback Possible problem The remote caller has tried to reach a Norstar target line, but has reached the Norstar system instead. Norstar has mapped the incoming digits onto the Auto DN. Solution 1. Verify all the digit strings that the switch should be sending. 2. Check that you have defined the corresponding