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

Hi, 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

Not finding what you are looking for?
Siemens optiPoint 300 basic (L28155H2100A102) IP Telephone Logo

12 questions posted

Ask a Question

Usually answered in minutes!

Top Siemens Computers & Internet Experts

Prashant M
Prashant M

Level 3 Expert

2278 Answers

Cindy Wells

Level 3 Expert

6259 Answers

Michael Thomas
Michael Thomas

Level 3 Expert

3056 Answers

Are you a Siemens Computer and Internet Expert? Answer questions, earn points and help others

Answer questions

Manuals & User Guides

View Most Popular

Siemens Computers & Internet

  • Siemens Computers & Internet

Most Popular Question

changing time siemens optipoint 500

  • Computers & Internet