Fig. 12 – Signalling LEDsBasic diagnostic tests and gateway initialisation are performedautomatically whenever the gateway is connected to supplyvoltage. Each test step is signalled by a specific colourcombination of the LEDs. If a test step fails, the indicatorcombination related to the failed test remains lighted.Power IndicatorThe Power LED signals whether the VoiceBlue Lite gateway issupplied or not.Power indicator (blue)Power LED colour/statusNo light The system is not working. /Blown fuse / Wrong powersupplyContinuous light The system is working.Tab. 1 – Survey of Power Indicator StatusesGSM IndicatorsThe GSM 1 to GSM 4 LEDs signal statuses of the respective GSMmodules. Whenever the 2N - VoiceBlue Lite is started, detectionof the GSM modules is carried out. This process is signalled by agreen LED. If all GSM modules are present and ok, the LED goesout. After that the firmware and configuration uploading process isinitiated, which is signalled by various LED colour combinations.The initialisation process is followed by a check of presence ofSIM cards in slots. Quick blinking of the green LED of therespective GSM module indicates this procedure. If a GSM18VoIPon www.voipon.co.uk sales@voipon.co.uk Tel: +44 (0)1245 808195 Fax: +44 (0)1245 808299
