20 Most Recent Siemens optiPoint 300 basic (L28155H2100A102) IP Telephone Questions & Answers

here you go , follow this on your main phone to reset your time.

press sevice button ( top left )
press *95
press *95 again and press tick
press tick again
press right arrow key until you come to time
press tick key . then press *
enter time (hhmm) then tick key
press main service button and your done.

Siemens... | Answered on Apr 02, 2012

You must factory restor siemens simatic to remove password. Or flash it will custom rom as per your siemens model.

Siemens... | Answered on Jun 10, 2019

Look on u tube they might have one

Siemens... | Answered on Jan 21, 2019

You would have to do a local search for an authorized repair facility

Siemens... | Answered on Aug 22, 2018


If the system is not booting then ethernet will never work.

Ensure that you are getting the correct power to the system. Check the power unit first then reset the motherboard inside.

Siemens... | Answered on Jun 25, 2018

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