ocr: IDSE-T2 IDSE-T3 Rerouting, Note 3 IDSE-O IDSE-D IDSE-T1 CCITT-61200 Notes 1 and 2 Congestion during call set-up Note I - Call attempt reaches IDSE-T,. Note 2 - No route is provided between IDSE-Ti and IDSE-T3. Note 3 1 Call rerouting is attempted via IDSE-T2, IDSE-T3 and IDSE-D. FIGURE 1-10/X.110