434 Programming telephone buttonsN0008589 3.3Notes about button programming:• The number of available button positions, will depend on the model of telephone that you areprogramming.• New button programming will overwrite any memory button programming performed at thetelephone by the user. Conversely, any changes to memory button programming performed bythe user at the telephone, after button programming, will overwrite memory keys programmedunder Button programming or CAP/KIM button programming. The screens will reflect thesechanges.• The 7316 digital phone has disjointed button numbering, because it is patterned after the 7310button programming, but has fewer available buttons. However, the Button programmingheading shows all the keys available for a 7310 digital phone. Refer to the default buttonprogramming section and ensure that you program the correct button numbers. Refer to “7316button defaults” on page 437.• IP telephones have three (2001), nine (2002) and 12 (2004/2050) programmable memory keys,as well as a display feature list that can contain up to 10 items. Refer to the IP TelephonyConfiguration Guide for information about setting up this list, and to the Telephony FeatureHandbook for an explanation about how to use the telephone buttons to access the list. Refer to“IP telephone button defaults” on page 440 for a list of default settings, and the location of thebuttons for each telephone. The 2001 IP telephone has an additional five non-visible buttonsthat can be programmed with Answer DNs or SWCA controls.Replacing digital telephonesIf you unplug a digital or IP telephone, the Business Communications Manager will retain theprogramming for that DN on these conditions:• Set relocation is enabled on the Feature settings screen. Refer to table entry: Set relocation onpage 467.• The original telephone is replaced with the same model.• The original telephone is plugged in somewhere else on the system before any other telephone isplugged into the jack from which the telephone was removed.• IP telephones: Keep DN alive is enabled on the DN record. Refer to table entry: Keep DN aliveon page 419.If the KIM attached to a 7316E digital phone becomes disconnected, the KIM loses any spilloverline programming from the 7316E, and all the buttons revert to either Blank or an Internal autodial.