Unparking calls feature does not work

Try 751 as the code. You can also try unplugging the main control box at the end of the workday for 10 minutes and plug it back in. This might remove temporary programming.

NEC DT400 Phone Manual

Rhode Island Telephone https://www.ritelephone.com > uploads > 2019/07
To Program a Line key as a Programmable Function. Key: 1. Press the Speaker key. 2. Dial Service Code 751. 3. Press the Line Key to be programmed.
72 pages

I have never heard of this 'hunt group' feature before.

https://www.google.com/search?q=nec+dt400+programming+guide

..

These phones work on about 8 NEC phone systems, but most are just newer versions of the same system. So, most likely the callback feature has been activated. Someone internally calls you, you don't answer, they dial # to activate callback. You come back to your phone, see feature key flashing, lift handset, dial #, call goes to whoever set callback, then feature key stops blinking.

What do you want to change? What feature is programmed on the button?

"EACH OF THESE CODES ARE PRECEEDED WITH THE ""FEATURE" " KEY"

**CONFIG NORSTAR CONFIGURATION PROGRAMMING (INSTALLER)
**SCPLUS NORSTAR SYSTEM COORDINATOR PLUS PROGRAMMING
(CICS AND ICS 2.0+)
**ADMIN NORSTAR ADMINISTRATIVE PROGRAMMING (SYS Coordinator)
**BASIC NORSTAR BASIC PROGRAMMING (CICS & ICS S.0+)
**SET NORSTAR SET PROFILE
**LINE NORSTAR LINE PROFILE
**USER NORSTAR USER PREFERENCES (CICS & ISC 2.0+)
**TIME NORSTAR TIME AND DATE (CICS & ICS 2.0+)
*0 BUTTON INQUIRY
*1 FEATURE KEY EXTERNAL AUTODIAL
*2 FEATURE KEY INTERNAL AUTODIAL
*3 FEATURE KEY PROGRAMMING
*4 PERSONNEL SPEED DIAL
*501 SELECT ENGLISH
*502 SELECT FRENCH
*503 SELECT SPANISH
*6 RING TYPE
*7 DISPLAY CONTRAST ADJUST
*80 RING VOLUME ADJUST
*81 MOVE LINE KEYS
*82 DIAL MODES
*831 AA ON/OFF (CICS)
*832 CCR ON/OFF (CICS)
*833 AA/CCR RECORDING MAINTENANCE (CICS)
*84 AUTO LOG OPTIONS
*85 CALL LOG PASSWORD
*89 PROGRAMMED RELEASE
*9 RUN/STOP
0 SYSTEM SPEED DIAL
1 SEND MESSAGE
#1 SEND MESSAGE CANCEL
2 RING AGAIN
#2 RING AGAIN CANCEL
3 CONFERENCE / TRANSFER
#3 CONFERENCE SPLIT
4 CALL FORWARD
#4 CALL FORWARD CANCEL
5 LAST NUMBER REDIAL
60 PAGE GENERAL
61X PAGE INTERNAL ZONE (1-6)
62 PAGE EXTERNAL
63X PAGE INTERNAL ZONE (1-6) PLUS EXTERNAL
64 LINE POOLS
65 MESSAGE REPLY
#65 MESSAGE REPLY CANCEL
66 VOICE CALL
67 SAVED NUMBER
68 RESTRICTION /COS OVERRIDE
69 PRIORITY CALL
70 CALL TRANSFER (BLIND)
71 LINK (HOOK FLASH)
72 TIMED RELEASE
74 CALL PARK
75 GROUP CALL PICKUP
76 DIRECTED CALL PICKUP
77 CALL DURATION TIMER
78 PAUSE
79 EXCLUSIVE HOLD
800 TRUNK ANSWER
801 CALL QUEUING
802 GROUP LISTENING
803 SHOW TIME
804 WAIT FOR DIAL TONE
805 TEST SETS (2.0)
806 HIDE DISPLAY
808 LONG TONES
810 MAKE BUSY
811 CALL INFORMATION
812 ENTER CALL LOG
813 LOG IT
815 AUTO BUMPING
817 IRAD TRANSFER (CICS ONLY)
819 OUTGOING NAME AND NUMBER BLOCKING (4.1)
#819 CANCEL OUTGOING NAME AND NUMBER BLOCKING
82 CAMP ON
83 PRIVACY CONTROL
84 LINE REDIRECTON
#84 CANCEL LINE REDIRECTION
85 DO NOT DISTURB
#85 CANCEL DO NOT DISTURB
86 BACK GROUND MUSIC
#86 CANCEL BACKGROUND MUSIC
87 "SERVICE MODES (DR-3,4,5)"
#87 CANCEL SERVICE MODES
870 SHOW SERVICE MODES (CICS)
871 EXTENDED RINGING (ICS)
#871 CANCEL EXTENDED RINGING
872 ALTERNATIVE RESTRICTIONS
#872 CANCEL ALTERNATIVE RESTRICTIONS
873 ALTERNATIVE ROUTING
#873 CANCEL ALTERNATIVE ROUTING
88 VOICE CALL DENY
#88 CANCEL VOICE CALL DENY

FEATURE 900 CODES ARE USED FOR OPTIONAL EQUIPMENT SUCH AS:
"VOICE MAIL, ACD, DIAL BY NAME, DOOR PHONE, ETC."
THE FOLLOWING ARE SOME COMMON USAGES:
9** "RAD PROGRAMMING (RAD 2, FASTRAD)"
9*0 RAD TRANSFER (ALL BUT CICS IRAD'S)
9*1 CHECK FEATURE CODES FOR VOICE MAIL
9*2 SMDR Admin
9*3 LOGGER TIME STAMP
9*3 VMI Codes(this was on an 8x24, came up on this code rather than F9*9)
9*4 NORSTAR DOOR PHONE PROGRAMMING
9*5 FLASH LOW RANGE CHECK FEATURE CODES
9*7 ACD ADMIN MAINTENANCE SESSION
9*9 VOICE MAIL INTERFACE (VMI) CODES
900 SMDR,enter an account number to be logged with the call
901 ACD LOGIN
901 VMI Admin
902 ACD UNAVAILABLE
903 VOICE MAIL HIGH/LOW RANGE SELECTION (DISABLED AFTER USE)
903 ACD CANCEL WRAP
904 ACD HELP
904 FLASH ACD LOW RANGE LOGIN/OUT
905 ACD CATEGORIZE
905 FLASH LOW RANGE DN IDENTIFIER
906 ACD RECORD CALL
906 FLASH LOW RANGE VM TRANSFER
907 FLASH LOW RANGE VM INTERRUPT
908 STAR TEXT (OBSOLETE)
908 FLASH ACD LOW RANGE BUSY MODE
909 ACD ANN. MAINTENANCE
909 FLASH ACD LOW RANGE QUEUE STATUS
910 FLASH LOW RANGE LEAVE MESSAGE
911 FLASH LOW RANGE OPEN MAILBOX
912 FLASH LOW RANGE OPERATOR CONTROL
913 ACD CALLS QUEUED
913 FLASH LOW RANGE SYSTEM ADMIN LOGIN
915 NORSTAR VOICE MAIL 2ND LEVEL ACCESS (PSWD=ACCESS2)
920 ACD ADMIN SESSION
921 ACD ROUTING SESSION DAY/NIGHT
922 ACD ADMIN STATISTICS SESSION
923 ACD GROUP STATISTICS SESSION
960 DIAL BY NAME (CINTECH NSVM OPTION)
961 DIAL BY NAME ADMIN (PSWD=1234)
980 VM SEND MSG TO ANOTHER MAILBOX
981 VM LOG INT MAILBOX
982 VM OPERATOR STATUS(PSWD=OPERATOR(67372867))
983 VM ADMIN PROGRAMMING (PSWD=1020000)
983 VM SOFTWARE LEVEL(LOGIN THEN OPTION 9)
984 VM TIME AND DATE(STARTALK Pswd=1020000)
984 AUTO FOREWARD TO VMAIL(NSVM4.0)
984 FLASH ACD LOGIN/OUT
985 "VOICE MAIL DN INQUIRY(RESET VM ADMIN PSWD 9,73738767793)"
986 VOICE MAIL TRANSFER
987 VOICE MAIL INTERRUPT
988 VOICE ACTIVATED NAME DIALING (NSVM 4.0)
988 FLASH ACD BUSY MODE
989 RECORD CALL (NSVM 4.0)
989 FLASH ACD QUEUE STATUS

To program a flash key press feature 00. then press the key you want to be a flash button, then press feature 03. Press feature 00 again to exit programming.

Don't know about other models, but I just called RCA small business phone support (800-511-3180) to find out how to clear the message light indicator on my 25210 2-line cordless phone when it continues to blink but there is no message.

All you have to do is hold down the delete button for a few seconds and it will clear. Hope this helps someone else from going batty!

The feature codes will not help you troubleshoot the system at all. But here you go:


"EACH OF THESE CODES ARE PRECEEDED WITH THE ""FEATURE" " KEY"

**CONFIG NORSTAR CONFIGURATION PROGRAMMING (INSTALLER)
**SCPLUS NORSTAR SYSTEM COORDINATOR PLUS PROGRAMMING
(CICS AND ICS 2.0+)
**ADMIN NORSTAR ADMINISTRATIVE PROGRAMMING (SYS Coordinator)
**BASIC NORSTAR BASIC PROGRAMMING (CICS & ICS S.0+)
**SET NORSTAR SET PROFILE
**LINE NORSTAR LINE PROFILE
**USER NORSTAR USER PREFERENCES (CICS & ISC 2.0+)
**TIME NORSTAR TIME AND DATE (CICS & ICS 2.0+)
*0 BUTTON INQUIRY
*1 FEATURE KEY EXTERNAL AUTODIAL
*2 FEATURE KEY INTERNAL AUTODIAL
*3 FEATURE KEY PROGRAMMING
*4 PERSONNEL SPEED DIAL
*501 SELECT ENGLISH
*502 SELECT FRENCH
*503 SELECT SPANISH
*6 RING TYPE
*7 DISPLAY CONTRAST ADJUST
*80 RING VOLUME ADJUST
*81 MOVE LINE KEYS
*82 DIAL MODES
*831 AA ON/OFF (CICS)
*832 CCR ON/OFF (CICS)
*833 AA/CCR RECORDING MAINTENANCE (CICS)
*84 AUTO LOG OPTIONS
*85 CALL LOG PASSWORD
*89 PROGRAMMED RELEASE
*9 RUN/STOP
0 SYSTEM SPEED DIAL
1 SEND MESSAGE
#1 SEND MESSAGE CANCEL
2 RING AGAIN
#2 RING AGAIN CANCEL
3 CONFERENCE / TRANSFER
#3 CONFERENCE SPLIT
4 CALL FORWARD
#4 CALL FORWARD CANCEL
5 LAST NUMBER REDIAL
60 PAGE GENERAL
61X PAGE INTERNAL ZONE (1-6)
62 PAGE EXTERNAL
63X PAGE INTERNAL ZONE (1-6) PLUS EXTERNAL
64 LINE POOLS
65 MESSAGE REPLY
#65 MESSAGE REPLY CANCEL
66 VOICE CALL
67 SAVED NUMBER
68 RESTRICTION /COS OVERRIDE
69 PRIORITY CALL
70 CALL TRANSFER (BLIND)
71 LINK (HOOK FLASH)
72 TIMED RELEASE
74 CALL PARK
75 GROUP CALL PICKUP
76 DIRECTED CALL PICKUP
77 CALL DURATION TIMER
78 PAUSE
79 EXCLUSIVE HOLD
800 TRUNK ANSWER
801 CALL QUEUING
802 GROUP LISTENING
803 SHOW TIME
804 WAIT FOR DIAL TONE
805 TEST SETS (2.0)
806 HIDE DISPLAY
808 LONG TONES
810 MAKE BUSY
811 CALL INFORMATION
812 ENTER CALL LOG
813 LOG IT
815 AUTO BUMPING
817 IRAD TRANSFER (CICS ONLY)
819 OUTGOING NAME AND NUMBER BLOCKING (4.1)
#819 CANCEL OUTGOING NAME AND NUMBER BLOCKING
82 CAMP ON
83 PRIVACY CONTROL
84 LINE REDIRECTON
#84 CANCEL LINE REDIRECTION
85 DO NOT DISTURB
#85 CANCEL DO NOT DISTURB
86 BACK GROUND MUSIC
#86 CANCEL BACKGROUND MUSIC
87 "SERVICE MODES (DR-3,4,5)"
#87 CANCEL SERVICE MODES
870 SHOW SERVICE MODES (CICS)
871 EXTENDED RINGING (ICS)
#871 CANCEL EXTENDED RINGING
872 ALTERNATIVE RESTRICTIONS
#872 CANCEL ALTERNATIVE RESTRICTIONS
873 ALTERNATIVE ROUTING
#873 CANCEL ALTERNATIVE ROUTING
88 VOICE CALL DENY
#88 CANCEL VOICE CALL DENY

FEATURE 900 CODES ARE USED FOR OPTIONAL EQUIPMENT SUCH AS:
"VOICE MAIL, ACD, DIAL BY NAME, DOOR PHONE, ETC."
THE FOLLOWING ARE SOME COMMON USAGES:
9** "RAD PROGRAMMING (RAD 2, FASTRAD)"
9*0 RAD TRANSFER (ALL BUT CICS IRAD'S)
9*1 CHECK FEATURE CODES FOR VOICE MAIL
9*2 SMDR Admin
9*3 LOGGER TIME STAMP
9*3 VMI Codes(this was on an 8x24, came up on this code rather than F9*9)
9*4 NORSTAR DOOR PHONE PROGRAMMING
9*5 FLASH LOW RANGE CHECK FEATURE CODES
9*7 ACD ADMIN MAINTENANCE SESSION
9*9 VOICE MAIL INTERFACE (VMI) CODES
900 SMDR,enter an account number to be logged with the call
901 ACD LOGIN
901 VMI Admin
902 ACD UNAVAILABLE
903 VOICE MAIL HIGH/LOW RANGE SELECTION (DISABLED AFTER USE)
903 ACD CANCEL WRAP
904 ACD HELP
904 FLASH ACD LOW RANGE LOGIN/OUT
905 ACD CATEGORIZE
905 FLASH LOW RANGE DN IDENTIFIER
906 ACD RECORD CALL
906 FLASH LOW RANGE VM TRANSFER
907 FLASH LOW RANGE VM INTERRUPT
908 STAR TEXT (OBSOLETE)
908 FLASH ACD LOW RANGE BUSY MODE
909 ACD ANN. MAINTENANCE
909 FLASH ACD LOW RANGE QUEUE STATUS
910 FLASH LOW RANGE LEAVE MESSAGE
911 FLASH LOW RANGE OPEN MAILBOX
912 FLASH LOW RANGE OPERATOR CONTROL
913 ACD CALLS QUEUED
913 FLASH LOW RANGE SYSTEM ADMIN LOGIN
915 NORSTAR VOICE MAIL 2ND LEVEL ACCESS (PSWD=ACCESS2)
920 ACD ADMIN SESSION
921 ACD ROUTING SESSION DAY/NIGHT
922 ACD ADMIN STATISTICS SESSION
923 ACD GROUP STATISTICS SESSION
960 DIAL BY NAME (CINTECH NSVM OPTION)
961 DIAL BY NAME ADMIN (PSWD=1234)
980 VM SEND MSG TO ANOTHER MAILBOX
981 VM LOG INT MAILBOX
982 VM OPERATOR STATUS(PSWD=OPERATOR(67372867))
983 VM ADMIN PROGRAMMING (PSWD=1020000)
983 VM SOFTWARE LEVEL(LOGIN THEN OPTION 9)
984 VM TIME AND DATE(STARTALK Pswd=1020000)
984 AUTO FOREWARD TO VMAIL(NSVM4.0)
984 FLASH ACD LOGIN/OUT
985 "VOICE MAIL DN INQUIRY(RESET VM ADMIN PSWD 9,73738767793)"
986 VOICE MAIL TRANSFER
987 VOICE MAIL INTERRUPT
988 VOICE ACTIVATED NAME DIALING (NSVM 4.0)
988 FLASH ACD BUSY MODE
989 RECORD CALL (NSVM 4.0)
989 FLASH ACD QUEUE STATUS

What do you want to change? What feature is programmed on the button?

"EACH OF THESE CODES ARE PRECEEDED WITH THE ""FEATURE" " KEY"

**CONFIG NORSTAR CONFIGURATION PROGRAMMING (INSTALLER)
**SCPLUS NORSTAR SYSTEM COORDINATOR PLUS PROGRAMMING
(CICS AND ICS 2.0+)
**ADMIN NORSTAR ADMINISTRATIVE PROGRAMMING (SYS Coordinator)
**BASIC NORSTAR BASIC PROGRAMMING (CICS & ICS S.0+)
**SET NORSTAR SET PROFILE
**LINE NORSTAR LINE PROFILE
**USER NORSTAR USER PREFERENCES (CICS & ISC 2.0+)
**TIME NORSTAR TIME AND DATE (CICS & ICS 2.0+)
*0 BUTTON INQUIRY
*1 FEATURE KEY EXTERNAL AUTODIAL
*2 FEATURE KEY INTERNAL AUTODIAL
*3 FEATURE KEY PROGRAMMING
*4 PERSONNEL SPEED DIAL
*501 SELECT ENGLISH
*502 SELECT FRENCH
*503 SELECT SPANISH
*6 RING TYPE
*7 DISPLAY CONTRAST ADJUST
*80 RING VOLUME ADJUST
*81 MOVE LINE KEYS
*82 DIAL MODES
*831 AA ON/OFF (CICS)
*832 CCR ON/OFF (CICS)
*833 AA/CCR RECORDING MAINTENANCE (CICS)
*84 AUTO LOG OPTIONS
*85 CALL LOG PASSWORD
*89 PROGRAMMED RELEASE
*9 RUN/STOP
0 SYSTEM SPEED DIAL
1 SEND MESSAGE
#1 SEND MESSAGE CANCEL
2 RING AGAIN
#2 RING AGAIN CANCEL
3 CONFERENCE / TRANSFER
#3 CONFERENCE SPLIT
4 CALL FORWARD
#4 CALL FORWARD CANCEL
5 LAST NUMBER REDIAL
60 PAGE GENERAL
61X PAGE INTERNAL ZONE (1-6)
62 PAGE EXTERNAL
63X PAGE INTERNAL ZONE (1-6) PLUS EXTERNAL
64 LINE POOLS
65 MESSAGE REPLY
#65 MESSAGE REPLY CANCEL
66 VOICE CALL
67 SAVED NUMBER
68 RESTRICTION /COS OVERRIDE
69 PRIORITY CALL
70 CALL TRANSFER (BLIND)
71 LINK (HOOK FLASH)
72 TIMED RELEASE
74 CALL PARK
75 GROUP CALL PICKUP
76 DIRECTED CALL PICKUP
77 CALL DURATION TIMER
78 PAUSE
79 EXCLUSIVE HOLD
800 TRUNK ANSWER
801 CALL QUEUING
802 GROUP LISTENING
803 SHOW TIME
804 WAIT FOR DIAL TONE
805 TEST SETS (2.0)
806 HIDE DISPLAY
808 LONG TONES
810 MAKE BUSY
811 CALL INFORMATION
812 ENTER CALL LOG
813 LOG IT
815 AUTO BUMPING
817 IRAD TRANSFER (CICS ONLY)
819 OUTGOING NAME AND NUMBER BLOCKING (4.1)
#819 CANCEL OUTGOING NAME AND NUMBER BLOCKING
82 CAMP ON
83 PRIVACY CONTROL
84 LINE REDIRECTON
#84 CANCEL LINE REDIRECTION
85 DO NOT DISTURB
#85 CANCEL DO NOT DISTURB
86 BACK GROUND MUSIC
#86 CANCEL BACKGROUND MUSIC
87 "SERVICE MODES (DR-3,4,5)"
#87 CANCEL SERVICE MODES
870 SHOW SERVICE MODES (CICS)
871 EXTENDED RINGING (ICS)
#871 CANCEL EXTENDED RINGING
872 ALTERNATIVE RESTRICTIONS
#872 CANCEL ALTERNATIVE RESTRICTIONS
873 ALTERNATIVE ROUTING
#873 CANCEL ALTERNATIVE ROUTING
88 VOICE CALL DENY
#88 CANCEL VOICE CALL DENY

FEATURE 900 CODES ARE USED FOR OPTIONAL EQUIPMENT SUCH AS:
"VOICE MAIL, ACD, DIAL BY NAME, DOOR PHONE, ETC."
THE FOLLOWING ARE SOME COMMON USAGES:
9** "RAD PROGRAMMING (RAD 2, FASTRAD)"
9*0 RAD TRANSFER (ALL BUT CICS IRAD'S)
9*1 CHECK FEATURE CODES FOR VOICE MAIL
9*2 SMDR Admin
9*3 LOGGER TIME STAMP
9*3 VMI Codes(this was on an 8x24, came up on this code rather than F9*9)
9*4 NORSTAR DOOR PHONE PROGRAMMING
9*5 FLASH LOW RANGE CHECK FEATURE CODES
9*7 ACD ADMIN MAINTENANCE SESSION
9*9 VOICE MAIL INTERFACE (VMI) CODES
900 SMDR,enter an account number to be logged with the call
901 ACD LOGIN
901 VMI Admin
902 ACD UNAVAILABLE
903 VOICE MAIL HIGH/LOW RANGE SELECTION (DISABLED AFTER USE)
903 ACD CANCEL WRAP
904 ACD HELP
904 FLASH ACD LOW RANGE LOGIN/OUT
905 ACD CATEGORIZE
905 FLASH LOW RANGE DN IDENTIFIER
906 ACD RECORD CALL
906 FLASH LOW RANGE VM TRANSFER
907 FLASH LOW RANGE VM INTERRUPT
908 STAR TEXT (OBSOLETE)
908 FLASH ACD LOW RANGE BUSY MODE
909 ACD ANN. MAINTENANCE
909 FLASH ACD LOW RANGE QUEUE STATUS
910 FLASH LOW RANGE LEAVE MESSAGE
911 FLASH LOW RANGE OPEN MAILBOX
912 FLASH LOW RANGE OPERATOR CONTROL
913 ACD CALLS QUEUED
913 FLASH LOW RANGE SYSTEM ADMIN LOGIN
915 NORSTAR VOICE MAIL 2ND LEVEL ACCESS (PSWD=ACCESS2)
920 ACD ADMIN SESSION
921 ACD ROUTING SESSION DAY/NIGHT
922 ACD ADMIN STATISTICS SESSION
923 ACD GROUP STATISTICS SESSION
960 DIAL BY NAME (CINTECH NSVM OPTION)
961 DIAL BY NAME ADMIN (PSWD=1234)
980 VM SEND MSG TO ANOTHER MAILBOX
981 VM LOG INT MAILBOX
982 VM OPERATOR STATUS(PSWD=OPERATOR(67372867))
983 VM ADMIN PROGRAMMING (PSWD=1020000)
983 VM SOFTWARE LEVEL(LOGIN THEN OPTION 9)
984 VM TIME AND DATE(STARTALK Pswd=1020000)
984 AUTO FOREWARD TO VMAIL(NSVM4.0)
984 FLASH ACD LOGIN/OUT
985 "VOICE MAIL DN INQUIRY(RESET VM ADMIN PSWD 9,73738767793)"
986 VOICE MAIL TRANSFER
987 VOICE MAIL INTERRUPT
988 VOICE ACTIVATED NAME DIALING (NSVM 4.0)
988 FLASH ACD BUSY MODE
989 RECORD CALL (NSVM 4.0)
989 FLASH ACD QUEUE STATUS

This worked for me:

Feature 4, 0 1 (xxx) xxx-xxxx

Mike

You need to program the feature "recall" on a button.

On the phone you want to program, press Feature 00
press a button you can program as "Recall"
press feature 03
when finished, press feature 00 and you are done.

Recall is the "flash" button

1. Press the Feature key.
2. Dial Call Forward All/DND
set code 69.
3. Press the Feature key
again.