User's Manual
Table Of Contents
- Contents
- Table Index
- Figure Index
- 0. Revision history
- 1. Introduction
- 2. Product concept
- 3. Application interface
- 3.1. Pin
- 3.2. Operating modes
- 3.3. Power supply
- 3.4. Power on and down scenarios
- 3.5. Power saving
- 3.6. Summary of state transitions
- 3.7. RTC backup
- 3.8. Serial interfaces
- 3.9. Audio interfaces
- 3.10. SIM card interface
- 3.12. Behaviors of the RI
- 3.13. Network status indication
- 3.14. Operating status indication
- 4. Antenna interface
- 5. Electrical, reliability and radio characteristics
- 6. Mechanical dimensions
- 7. Storage and Manufacturing
- Appendix A: GPRS coding schemes
- Appendix B: GPRS multi-slot classes
M95 Hardware Design
M95_HD_V1.0 - 56 -
RI
Idle Ring
Data calling establish.
On-hook by
“ATH”. SMS
received
HIGH
LOW
Figure 33: RI behavior of data calling as a receiver
RI
Idle Calling
On-hook
Talking
HIGH
LOW
Idle
Figure 34: RI behavior as a caller
RI
Idle or
talking
URC or
SMS
Received
HIGH
LOW
120ms
Figure 35: RI behavior of URC or SMS received