We have the Avaya 18d phones...how do you change the number of rings?

Are these call from the outside? If so, it sounds like the Night Service is turned on. If not and these are extension calls then the Do Not Disturb is probably on.

Mute the speaker, mute the ringing?

Press Feature 00 (zero, zero) from station 10 or 11. Press left intercom button twice, press #103, and then enter time in military format (24 hr). Press feature 00 again. This is all done with the handset down.

http://dstech1.com/changing-time-on-a-partner/

Here you go.

Programming is done on extension 10 or 11
Press feature 00
Left intercom, Left intercom
#506
mode 1
line 01
number of rings 4
do the same for all lines
Cheers

First, call your voice mail. After the messages you will be given a menu to follow. On the Sony Ericsson W350 I went to Personal Options (4) then to Administrative Options (2) and finally Prompt Level (3). After reaching Prompt Level you have the option to shorten or extend the number of rings. At this point I chose to shorten the prompt and then I exitted the system.

Sounds like you changed your line selection. Changing line selection on a Partner system is done on either ext 10 or 11.
At one of those ext's press the feature key and "00"
Next press the left hand intercom twice
The display should say system programming

Press the right hand intercom once. The display should say Centralized Programming.

Enter in the extension number that you want to program.

enter **
press the lit line in the order you want the to be used, i.e. line 2 then line 3 then line 4 etc.
enter ** when finished with line selection
.
Press feature "00" to logout
Hope that helps

The phone is forwarded.
At that phone, press feature 11, XX, XX

Where the XX's are is that extension number. So if it was extension 12:



Feature 11, 12, 12

Try hitting the speaker button and intercom your boss. When you hit the speaker button to hang up, do you get the same thing? If not. It could be that the gray "clicker" switch that pushes down when you put the handset back isnt going all the way back down...

Let me know.

Are you trying to change if it rings or how it sounds when it rings?

The phone you have (Partner 18D) can be used on several different Avaya phone systems that all program differently. To change when it rings, this would need to done in the system programming (not the phone) All the manuals are avaialble on Avaya's web site but you need to know which system you have before you can start searching. www.avaya.com