Telcom te-157 user guide hand set has locked up need to get lock off

talk with a telcom provider as there is equipment on the market that enables the phone system to be locked
older type phones with the spinning dial had a lock that was placed in a hole and prevented the dila from moving
later models a digital locks so ask around
cell phones and the like can have a user password installed that requires the password to be entered before the phone opens up

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If it's on an airline reverse input/output, if it's electric you might have the polarities the wrong way round.you could try swapping connectors.This is not without risk.you may damage circuitry doing this.

Found the manual available for download here:
Download TELCOM 580 TLC580 User Guide English

This is described in the Trouble Shooting section of the User Guide. If you don't have a User Guide, you can download one from the Shure website.

Hi,
Using your remote control....

Select Menu
Select User Settings
Select Locking

You now have a choice;

If you want to completely lock your receiver...

Select Receiver Lock (note; default code is 0000)

If you want to lock certain channels...

Select Channel Locking
Select Yes
Select channels you want to lock on 'Channels to lock' screen
There are different levels you can use.

If you want to change your lock code...

Select User Setting
Select Change receiver Code.

Regards
Zahc

If I've helped, please rate me.

users guide for panasonic cordless hand set kx t4027 do not know how to program in new numbers need users guide

the full manual for the te-3000s is available here (free) http://safemanuals.com/user-guide-instructions-owner-manual/CASIO/TE-3000S-_E
once the page opens click on the "download complete user guide (1135ko) " it will open a adobe .pdf file that contains your manual. All the reference to your tax setting is there.
Regards.
p.s. you will need Adobe (free) reader to view this manual.

This is from the user manual for the monitor. You can download a copy from hp here:

http://h10025.www1.hp.com/ewfrf/wc/manualCategory?lc=en&dlc=en&cc=us&product=324216&os=228&lang=en&

Click on the "monitor user's guide" link to download.

There are four adjustable options on the OSD settings screen: Lock OSD settings, Timeout, H Position, and V Position.
To change OSD settings:
1 Open the OSD setting screen under the Advanced menu. See
“Using the On Screen Display” on page 25.
2 Press the Browse buttons to select the option you want to adjust.
3 Press the Select button to check the option.
To change OSD lock setting:
1 Press the Browse button to select yes (lock) or no (unlock). The
setting is automatically saved when you change the value.
2 Choose Exit sub-menu and press the Select button to return to
the OSD Main Menu or press the Menu button to exit OSD.
NOTE: Once OSD is locked, all OSD functions including the
shortcut buttons are disabled. If OSD is locked, pressing
any button on the monitor directly opens the Lock OSD
settings window so that you can unlock OSD.

ARE YOU SURE IT'S CODE IS TE AND NOT DE
DE IS PROBLEM WITH DOOR LOCK . TAKE THE WIRE OF THE DOOR SEAL AT FRONT . PUT YOUR HAND IN BY DOOR LOCK POSSIBLE THE PLUG HAS COME OF THE DOOR LOCK, IF NOT THE LOCK NEEDS REPLACING.
SWITCH APPLIANCE OF FIRST. GOOD LUCK