The prompt is in Customer Data Block LD15. Via an overlay gateway and appears like this. It's the last item FOPT that you are interested in. You can print it in LD21
>ld 21
PT1000
REQ: prt
TYPE: tim
TYPE TIM_DATA
CUST 0
TYPE TIM_DATA
CUST 00
FLSH 80 200
PHDT 30
DIND 30 12 10
DIDT 30 12 10
LDTT 6
DLAT 0
BOTO 14
DBRC 60
RTIM 30 30 30
ATIM 0
AQTT 30
ADLD 0
AFNT 0
NFNA 20
ADHT 0
HWTT 300
NIT 8
FOPT 0
REQ: CHG Change existing data block
TYPE: TIM_DATA Timers
CUST 0-99 Customer number
FLSH 20-(45)-768 Switchhook Flash timing
SDFL 384-(1024)-2048
Signal Destination Flash timing
PHDT 1-(30)-63 Permanent Hold Timer
DIND 2-(30)-60 Dial tone and Interdigit timeout for non-DTMF sets
DIDT 2-(14)-60 Dial tone and Interdigit timeout for DTMF sets
LDTT 2-(6)-30 Line disconnect tone timer for 500/2500 telephones in seconds
DLAT (0)-120 Delayed Answer Timer
BOTO 2-(14)-60 Busy tone/Overflow tone Timeout
DBRC 2-(60)-120 Duration Between Reminder Cadences for Audible Reminder of Held
Call
RTIM xxx yyy zzz Recall Timers for Slow Answer, Camp-On and Call Waiting
ATIM (0)-126 Attendant Alternative Answering Timer
AQTT (0)-255 Attendant Queue Timing Threshold in seconds
ADLD (0)-20 Auto Dial Delay in seconds
AFNT (0)-126 Attendant Forward No Answer Timer (must be an even number)
AFBT (0)- AFNT Attendant Forward Buzz Tone (Your entry can be equal to or less than
your response to the AFNT prompt and must be an even number)
NFNA (0)-63 Night Forward No Answer or ring cycles
NFNS (0)-504 Night Forward No Answer in seconds
ADHT (0)-14 Attendant Delay on Hold Timer in seconds
HWTT 0-(300)-600 Length of Howler Tone in seconds
NIT 2-(
Network Alternate Route Selection Interdigit Timer
FOPT 0-(14)-30 Flexible Orbiting Prevention Timer