
1. Product Introduction
6
•
Signal:
be red or green. be red if there is no signal. be off for 500ms then be red for 500ms if
there is no SIM card. be orange when there is SIM card and signal but the register to service
provider's network failed. be green if every thing is ok.
•
Service:
be red or green. be off if there is no call. be off for 500ms then be red for 500ms if
there is no SIM card. be green when there is a call.
Figure 1-5
GSM/CDMA interface card
A External Antenna