How do I delete speed dial numbers previously set on the Cortelco ITT-4125

ring your service provider

Lift the head set. Press PROG button twice. Then press MEMORY then the speed dial number. Hang up. Done. Or..Lift the head set, press PROG, enter a phone number you'd like to set to speed dial, press PROG, MEMORY, the speed dial number (1,2,3,4 etc), then hang up..

Speed Dial Keys
The fax number and other data for a particular destination can be programmed using a 3-
digit Speed Dial Number. This feature allows you to transmit a document to the
particular destination by pressing the Speed Dial Key, entering the 3-digit number and
pressing the START Key. You can program a fax number in any of the 100 Speed Dial
locations, number 001 to 100.
Entering
1 Press the PROGRAM Key and scroll through the
menus until you reach the DIAL REGISTRATION
Menu. Press YES to begin programming.
2 Press 2 or scroll down to the Speed Dial menu and
press YES.
3 Enter the number of the location you want to
program and press YES.
4 Enter the Telephone number you wish to transmit
to and press YES after checking to see its OK. If
you want to enter the sub-address, press the Down
Arrow Key.
5 You can press sub-address up to 10-digit.
REGISTERED! KEEP?
OK=YES (EDIT/DEL=NO)
EDIT *DELETE
-SELECT&PUSH”YES”-
DIAL REGISTRATION?
YES / or 1-6
2 SPEED DIAL?
OK=YES
SPEED DIAL =_
OK=YES
OK=YES (SUB= )
SUB=_
OK=YES

Edit/Deleting
1 If you wish to change any entry, a screen allows you to accept or change.
2 If you wish to change a Key that was previously
programmed, this message appears. Press YES to
keep this location as is, or NO if you wish to edit it.
3 If you choose NO, use the arrow keys to select
either EDIT or DELETE and then proceed with the
needed changes.
Group Dial Keys
Instead of their regular functions, any of the One-Touch Keys can be used as Group Dial
Keys. Destinations already stored for One-Touch, Speed Dial can be entered in a Group
Dial Key. Each Group can contain up to 50 locations.
Entering
1 Press the PROGRAM Key and scroll through the
menus until you reach the DIAL REGISTRATION
Menu. Press YES to begin programming.
2 Press 3 or scroll down to the Group Dial menu and
press YES.
3 Press the One-Touch Key you wish to use.
4 Press YES to accept your selection.
NAME=_
OK=YES
REGISTERED! KEEP?
OK=YES (EDIT/DEL=NO)
EDIT *DELETE
-SELECT&PUSH”YES”-

Btw, I’m available to help over the phone in case u need at https://www.6ya.com/expert/normanj_7893313f0751935f

It's 2 wires. If you want to feel warm and fuzzy, try page 2 of the pdf http://wedophones.com/TheBellSystem/pdf/bsp/2500/502-523-402-8205.pdf

A bell in a 2554 set has a red and black wire. You can't connect them directly across the line, because it would short out the line. The network has a capacitor between A and K, so you wire the bell through those leads for bridged ringing.

Now, some bells have the capacitor already on the side...ITT mini ringers do not, but the 75-BA's do.

Carl

Had to call the local provider. They reset everything.

if they are red-green-yellow then just isolate your yellow wire and spade and open up phone junction box and connect the red/green wires to the red/green wires on phone jack terminals you can hook either way this type of phone isn't polarity sensitive,then make sure all other phones on this line work properly after install

Create speed dial entries for fax numbers that you use frequently. The number of speed dial entries you can set up depends on the HP device. For more information, see the specifications for the HP device.
To manually create a speed dial entry 1 In the HP Solution Center, click Settings, point to Fax Settings and Setup, and then click Fax Speed Dial Settings. 2 Click New Entry. 3 In the Speed Dial Settings - New Entry dialog box, type a name and fax number, and then click OK. 4 In the Speed Dial Settings dialog box, click Save. The entry is stored on the HP device.
Note If you are creating a speed dial entry for a networked HP device and you are unable to save the entry, another user on the network might have accessed the same speed dial. Wait a few minutes and try to save the entry again. To create a speed dial entry from the Address Book 1 In the HP Solution Center, click Settings, point to Fax Settings and Setup, and then click Fax Speed Dial Settings. 2 Under Address Book, click Select From. 3 In the Address Book dialog box, select one or more names, and then click OK. 4 In the Speed Dial Settings dialog box, click Save. The entry is stored on the HP device.
Note If you are creating a speed dial entry for a networked HP device and you are unable to save the entry, another user on the network might have accessed the same speed dial. Wait a few minutes and try to save the entry again.

NEW Number

Function
72
set
1
press destination like 01 the yellow part of the keyboard
enter fax number
set
enter name
set
stop

Delete a number?

press as above like 02
press clear
set
press clear
press set
stop

If you incorrectly stored an entry in speed dial, just do the steps to store a number. The previous number will be overwritten.

"With the handset on the cradle, dial the number to be stored. Next press set, then the location you want the number stored at. 0-9"

Hope this helps-wicc-

Hi Menu => Contacts =>Speed dials. Good luck.