After getting into your car and turning of the ignition key, two lights on the command keypad and the display should come on to indicate your handsfree system is powered up.
GSM Offboard:
The CK3500 loads a class 8/10 GSM/GPRS module.
The presence of this module let you use the SIM Access Profile (SAP) of your telephone or even use your CK3500directly as a car phone, without Bluetooth phone, with only a physical SIM card. It also lets you use your kit as internet access point by using the GPRS.
The SIM Access Profile (SAP) allows the information on your personnal SIM card to be used by Bluetooth.
You thus benefit from the GSM antenna of the CK3500 and you save on the battery in your Bluetooth telephone.
Pairing:
For safety reasons, the pairing procedure of SAP telephone is different.
You must select the SIM Access Phone section in the "Preference" / "Advanced Pref" / "Pair Telephone" menu.
A 16-digit code is displayed on the screen of the CK3500, which is the link code to be captured on your SAP telephone.
If the CK3500 requires the PIN code of your personal SIM card, it will ask you to enter it.
Functioning:
The SIM Access mode is activated by default if your telephone supports it.
The CK3500 will use this mode as soon as your telephone is detected by maintaining continuity of service.
The way to use the interface is the same as for Bluetooth telephony.