SDAA112 September   2025 AM625

 

  1.   1
  2.   Abstract
  3.   Trademarks
  4. 1Use Case
  5. 2Platform and Products
    1. 2.1 Hardware
    2. 2.2 Software
  6. 3Methods
  7. 4Overview of Steps to Bring Up the Interface and Establish A Connection
  8. 5Troubleshooting
    1. 5.1 Power and Initialization First
    2. 5.2 Verify Network Before PPP
    3. 5.3 Test Manual Dial First
    4. 5.4 Timing When Dialing Up
    5. 5.5 Serial Communication
    6. 5.6 Chat Script
    7. 5.7 PPP Options
    8. 5.8 Signal Strength and Antenna Setup
    9. 5.9 Modem Reset
  9. 6Summary
  10. 7References

5.3 Test Manual Dial First

Before relying on PPP, attempt to dial manually with ATD*99#. If this does not result in a CONNECT, PPP does not succeed either.