Incoming call rings one time and disconnects

Just a matter of reprogramming.

Pt Programming - Panasonic KX-TEM824 Features Manual

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Panasonic KX-TEM824 Manual Online: Pt Programming. Description A proprietary telephone (PT) can be used to customise the settings of the PBX or of an ...

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  Panasonic KX-TEM824 User Manual - ManualsLib

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  View and Download Panasonic KX-TEM824 user manual online. Advanced Hybrid System. KX-TEM824 pbx pdf manual download. Also for: Kx-tes824.

KX-TES824 Model KX-TEM824 Installation Manual

https://business.panasonic.sg > psd > 2020/06/08
PDF
Jun 8, 2020 - Explains how to install and use KX-TE Maintenance Console, a PC-based programming utility. Section 4 Troubleshooting. Provides information on ...
98 pages

What phone system are you using?
I will gladly show you how

KX-TEA/TES/TA series or KX-TDA/TDE/NCP series

call time warner

First assing the flexible ringing day, night, lunch in programs 408 to 410, the assign the delay ringing for the extensions you want in 411 to 413.

See my response to your first post.

There isn't on on the phone. However, certain Panasonic models of phone systems have batteries that go bad from time to time. Most noticeably the ones that were KX-T30810/61610/123210/11.
Sinse the phone can work on one of about 18 different Panasonic key systems, you'd need to be a bit more specific as to why you think you need a battery.

Carl

A phone that only rings part time sounds like a system clock or time mode issue. What mode is yours in? The attendant console (ext 101) can control the time, or system programming can control the mode that the switch is in. Things like dialing 780,781,782, and 783 on the intercom will switch to Day/Night/Lunch/Break mode.

If you have access to installer programming, 101 and 102 control the method of switching and the time of day it does it.

Carl

On the intercom, if it's a TA or similar phone system, dial 7311# for call waiting on outside lines and 7321# for call waiting on the intercom. (0 cancels).

Carl

You have 4 different modes of calling available to be programmed: DAY NIGHT BREAK and LUNCH. Your installer has to set up the ICD groups, but you can create a LUNCH group which looks like the day mode but rings all phones. The codes are accessed by dialing on the intercom *780x where 0 is day 1 is night 2 is lunch and 3 is break.

You may use the NIGHT mode in the daytime, but if you have voice mail, it will play the night greeting instead of a day greeting.

Carl

please i need your help,i use KX-T7730 in my office and of recent when incoming calls comes in all the phones in the office starts ringing and also i would like to know how i can lock and unlock the phone so as to prevent other users from accessing it.Thanks