One handset on our Panasonic KX-T7730 system has gone wrong. I can get a line on Co 1 and Co 2 but the Sp-Phone mode is always on. As soon as I switch back to Co 1 or 2 to speak direct into the handset the line is cut. Something seems to have gone wrong with the programming. The manual does not deal with this fault.

If you are using the KX-T7730 phone on a Panasonic KX-Txx 308/824 system. From the Switcboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle/hook :
1. Press PROGRAM * # followed by the system password ( default is 1234).
2. Now press 001 and then SP-PHONE. Enter the system speeddial location ( 00 to 99 ) or just press SP-PHONE again to go to 00.
3. Enter your line access number ( usually 0 or 9 ) followed by the telephone number you would like to assign for the speeddial.
4. Press AUTO DIAL / STORE to save your setting.
5. To go to the next speeddial location press SP-PHONE and follow steps 3 and 4 again.
6. Press PROGRAM to exit program mode.
7. To dial the system speeddial from any extesion lift the handset and press * followed by the speeddial location ( example 00 )

Hello, if you are using this phone with a 308 or 824 system, while the handset is still on the cradle / hook press PROGRAM and then the one touch button you want to assign a CO line to. Now press 0 followed by the line port number ( example 1 ). Press AUTO DIAL / STORE to save the changes. Press PROGRAM to exit program mode.
PLEASE vote if this was helpful

If you are using the KX-T7730 phone on a Panasonic KX-Txx 308 or 824 system.
From the Switchboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle/hook :
1. Press PROGRAM * # followed by the system password ( default is 1234).
2. Now press 400 and then SP-PHONE. Enter the line number you wish to change. ( In your case 2)
3. Press AUTO ANS / MUTE to change between Connect and Not Connect.
4. Press AUTO DIAL / STORE to save your changes.
5. Press PROGRAM to exit program mode and you are done.

If you are using the KX-T7730 phone on a Panasonic KX-Txx 308/824 system. From the Switcboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle/hook :
1. Press PROGRAM * # followed by the system password ( default is 1234).
2. Now press 001 and then SP-PHONE. Enter the system speeddial location ( 00 to 99 ) or just press SP-PHONE again to go to 00.
3. Enter your line access number ( usually 0 or 9 ) followed by the telephone number you would like to assign for the speeddial.
4. Press AUTO DIAL / STORE to save your setting.
5. To go to the next speeddial location press SP-PHONE and follow steps 3 and 4 again.
6. Press PROGRAM to exit program mode.
7. To dial the system speeddial from any extesion lift the handset and press * followed by the speeddial location ( example 00 )

If you are using the KX-T7730 phone on a Panasonic KX-Txx 308/824 system. From the Switcboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle/hook :
1. Press PROGRAM * # followed by the system password ( default is 1234).
2. Now press 001 and then SP-PHONE. Enter the system speeddial location ( 00 to 99 ) or just press SP-PHONE again to go to 00.
3. Enter your line access number ( usually 0 or 9 ) followed by the telephone number you would like to assign for the speeddial.
4. Press AUTO DIAL / STORE to save your setting.
5. To go to the next speeddial location press SP-PHONE and follow steps 3 and 4 again.
6. Press PROGRAM to exit program mode.
7. To dial the system speeddial from any extesion lift the handset and press * followed by the speeddial location ( example 00 )

If you are using the KX-T7730 phone on a Panasonic KX-Txx 308/824 system. From the Switcboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle/hook :
1. Press PROGRAM * # followed by the system password ( default is 1234).
2. Now press 001 and then SP-PHONE. Enter the system speeddial location ( 00 to 99 ) or just press SP-PHONE again to go to 00.
3. Enter your line access number ( usually 0 or 9 ) followed by the telephone number you would like to assign for the speeddial.
4. Press AUTO DIAL / STORE to save your setting.
5. To go to the next speeddial location press SP-PHONE and follow steps 3 and 4 again.
6. Press PROGRAM to exit program mode.
7. To dial the system speeddial from any extesion lift the handset and press * followed by the speeddial location ( example 00 )

If you are using the KX-T7730 phone on a Panasonic KX-Txx 308/824 system. From the Switcboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle press Program * # followed by the system password ( default is 1234). Now press 001 and then SP-PHONE. Enter the system speeddial location ( 00 to 99 ) or just press SP-PHONE again to go to 00. Now enter your line access number ( usually 0 or 9 ) followed by the telephone number you would like to assign for the speeddial. Now press AUTO DIAL / STORE to save your setting. To go to the next speeddial location press SP-PHONE and follow the above steps again. Press Program to exit program mode. To dial the system speeddial from any extesion lift the handset and press * followed by the speeddial location ( example 00 )
PLEASE rate this answer if it was helpful.
Thank you.

If you are using the KX-T7730 phone on a Panasonic 308/824 system. From the Switcboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle press Program * # followed by the system password ( default is 1234). Now press 001 and then SP-PHONE. Enter the system speeddial location ( 00 to 99 ) or just press SP-PHONE again to go to 00. Now enter your line access number ( usually 0 or 9 ) followed by the telephone number you would like to assign for the speeddial. Now press AUTO DIAL / STORE to save your setting. To go to the next speeddial location press SP-PHONE and follow the above steps again. Press Program to exit program mode. To dial the system speeddial from any extesion lift the handset and press * followed by the speeddial location ( example 00 )
PLEASE rate / vote this answer if it was helpful.
Thank you.

If you are using the KX-T7730 phone on a Panasonic KX-Txx 308/824 system. From the Switcboard / Main telephone ( usually ext 101, 10 or 9 ) with the handset on the cradle press Program * # followed by the system password ( default is 1234). Now press 001 and then SP-PHONE. Enter the system speeddial location ( 00 to 99 ) or just press SP-PHONE again to go to 00. Now enter your line access number ( usually 0 or 9 ) followed by the telephone number you would like to assign for the speeddial. Now press AUTO DIAL / STORE to save your setting. To go to the next speeddial location press SP-PHONE and follow the above steps again. Press Program to exit program mode. To dial the system speeddial from any extesion lift the handset and press * followed by the speeddial location ( example 00 )
PLEASE rate this answer if it was helpful.
Thank you.

Panasonic KX t7730 call forwarding function to external party:
If you are using the Kx-TA624 pbx (TES 824 models) system, program your phone unit (t7730) as follows: lifet handset, press FWD/DND button, press 3, then the outside line access code, then phone number, then #, then return handset.
If you are using the kx-ta1232 (higher models) of pbx system (usually with 9 or more CO lines cabable, use the following command:
lift handset, press FWD/DND button, press 6, then the outside line access code, then telehone number, then # then return handset to cradle.