"not allowed" om the screen

Question edited fir clarity

Ideas here. You can also Google
make model manual
See if it is a an outgoing call barring feature.

https://www.google.com/search?q=I-DECT+Phone.+It+receives+incoming+calls+but+won%27t+dial+outgoing

..

Please provide me with your model number so that I can help you.

Check which services are active [System X] *#001#
Charge advice (before call) *40* (Number)
Charge advice (All calls) *411#
Charge advice (During call) "R"(to hold call) *40#(Call will be reconnected)
Cancel all calls charge advice #411#
Reminder call *55*(Time in 24 hour format)#
Cancel reminder call #55#
Call Divert - all calls - activate *21*(Number to divert to)#
Call Divert - all calls - to check *#21#
Call Divert - all calls - to cancel #21#
Call Divert - on busy - to activate *67*(Number to divert to)#
Call Divert - on busy - to check *#67#
Call Divert - on busy - to cancel #67#
Call Divert - on no reply - to activate *61*(Number to divert to)#
Call Divert - on no reply - to check *#61#
Call Divert - on no reply - to cancel #61#
Call waiting on *43#
Call waiting off #43#
Call waiting - to check condition *#43#
Call waiting - to answer 2nd caller Recall + 2
Call waiting - remove beeps during call Recall + 0
"Ring back" (Camp on busy) 5
Cancel ring back #37#
Caller display on *234#
Caller display off #234#
BT call minder (voice mail) 1571
Check called number 1471
Release CLI 1470 + dialled number
Withhold CLI 141 + dialled number
Access "Choose to refuse" 14258
Call barring on (outgoing) *341 + option number #
(options are 1 = allows 999 and operator, 2 = allows 999 & local, 3 = allows 999 & STD, 4 = bars all operator calls, 5 = bars *, 6 = bars premium adult lines, 7 = bars premium information lines)
Call barring off (outgoing) #341*(PIN code)#
Incoming calls barred off [System X] #261#
Incoming calls barred on *261#
Incoming calls barred off #261*(PIN code)#

In my micromax Q7 mobile all incoming calls are replied with this number is busy. Neither I locked nor barred the calls, knowingly or unknowingly. Please get a solution.

Imagine ur cell battery is very low, u r expecting an important call and u don't have a charger.

Nokia instrument comes with a reserve battery. To activate, key is "*3370#"

Ur cell will restart with this reserve and ur instrument will show a 50% incerase in battery.

This reserve will get charged when u charge ur cell next time.

*3370# Activate Enhanced Full Rate Codec (EFR)-Your phone uses the best sound quality but talk time is reduced by approx. 5%
#3370# Deactivate Enhanced Full Rate Codec( EFR)


*#4720# Activate Half Rate Codec - Your phone uses a lower quality sound
but you should gain approx 30% more Talk Time
*#4720# Deactivate Half Rate Codec

2 *#0000# Displays your phones software version,

1st Line :S oftware Version,
2nd Line : Software Release Date,
3rd Line : Compression Type
3 *#9999# Phones software v ersion if *#0000# does not work

4 *#06# For checking the International Mobile Equipment Identity (IMEI Number)

5 #pw+1234567890+1# Provider Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols)

6 #pw+1234567890+2# Network Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols)

7 #pw+1234567890+3# Country Lock Status. (use the "*" button to obtain the "p,w" and "+" symbols)

8 #pw+1234567890+4# SIM Card Lock Status.(use the "*" button to obtain the "p,w" and "+" symbols)

9 *#147# (vodafone) this lets you know who called you last *#1471# Last call (Only vodofone)

10 *#21# Allows you to check the number that "All Calls" are diverted To

11 *#2640# Displays security code in use


12 *#30# Lets you see the private number

13 *#43# Allows you to check the "Call Waiting" status of your phone.

14 *#61# Allows you to check the number that "On No Reply" calls are diverted to

15 *#62# Allows you to check the number that "Divert If Unrea chable(no service)" calls are diverted to

16 *#67# Allows you to check the number that "On Busy Calls" are diverted to

17 *#67705646#R emoves operator logo on 3310 & 3330

18 *#73# Reset phone timers and game scores

19 *#746025625# Displays the SIM Clock status, if your phone supports this power saving feature "SIM Clock Stop Allowed", it
means you will get the best standby time possible

20 *#7760# Manufactures code

21 *#7780# Restore factory settings

22 *#8110# Software version for the nokia 8110

23 *#92702689# (to rember *#WAR0ANTY#)

Displays -
1.Serial Number,
2.Date Made
3.Purchase Date,
4.Date of last repair (0000 for no repairs),
5.Transfer User Data.
To exit this mode -you need to switch your phone off then on again

24 *#94870345123456789# Deactivate the PWM-Mem

25 **21*number# Turn on "All Calls" diverting to the phone number entered

26 **61*number# Turn on "No Reply" diverting to the phone number entered

27 **67*number# Turn on "On Busy" diverting to the phone number entered

Each command is prefixed with either one or two * or # characters as follows:
** Register and Activate
* Activate
## De-Register (and Deactivate)
# Deactivate
*# Check Status
© Call button



Once each command has been entered, if it is a network command (as opposed to a local handset command) it must be transmitted to the network by pressing the YES (receiver) key which acts as an enter key - this is represented here with the © character. Always enter numbers in full international format +CountryAreaNumber ( e.g. +447712345678).

Command Description Command String
Security
Change call barring code **03*OldCode*NewCode*NewCode#©
Change call barring code **03*330*OldCode*NewCode*NewCode#©
Change PIN code **04*OldPIN*NewPIN*NewPIN#©
Change PIN2 code **042*OldPIN2*NewPIN2*NewPIN2#©
Unlock PIN code (when PIN is entered wrong 3 times) **05*PUK*NewPIN*NewPIN#©
Unlock PIN2 code (when PIN2 is entered wrong 3 times) **052*PUK2*NewPIN2*NewPIN2#©
Display IMEI *#06#
Call Forwarding (Diversions)
De-register all call diversions ##002#©
Set all configured call diversions to number and activate **004*number#©
De-register all configured call diversions (no answer, not reachable, busy) ##004#©
Unconditionally divert all calls to number and activate **21*number#©
Activate unconditionally divert all calls *21#©
De-register unconditionally divert all calls ##21#©
Deactivate unconditionally divert all calls #21#©
Check status of unconditionally divert all calls *#21#©
Divert on no answer to number and activate **61*number#©
Activate divert on no answer *61#©
De-register divert on no answer ##61#©
Deactivate divert on no answer #61#©
Check status of divert on no answer *#61#©
Divert on not reachable to number and activate **62*number#©
Activate divert on not reachable *62#©
De-register divert on not reachable ##62#©
Deactivate divert on not reachable #62#©
Check status of divert on not reachable *#62#©
Divert on busy to number and activate /td> **67*number#©<
Activate divert on busy *67#©
De-register divert on busy ##67#©
Deactivate divert on busy #67#©
Check status of divert on busy *#67#©
Change number of seconds of ringing for the given service before diverting a call (such as on no answer). Seconds must be a value from 5 to 30. De-registering the same divert will also delete this change! **service*number**seconds#© (Service numbers, see below)
Call barring
Activate barr all outgoing calls (see Security to set code) **33*code#©
Deactivate barr all outgoing calls #33*code#©
Check status of barr all outgoing calls *#33#©
Activate barr all calls **330*code#©
Deactivate barr all calls #330*code#©
Check status of barr all calls /td> *#330*code#©<
Activate barr all outgoing international calls **331*code#©
Deactivate barr all outgoing international calls #331*code#©
Check status of barr all outgoing international calls *#331#©
Activate barr all outgoing international calls except to home country **332*code#©
Deactivate barr all outgoing international calls except to home country #332*code#©
Check status of barr all outgoing international calls except to home country *#332#©
Activate barr all outgoing calls **333*code#©
Deactivate barr all outgoing calls #333*code#©
Check status of barr all outgoing calls *#333#©
Activate barr all incoming calls **35*code#©
Deactivate barr all incoming calls #35*code#©
Check status of barr all incoming calls *#35#©
Activate barr all incoming calls when roaming **351*code#©
Deactivate barr all incoming calls when roaming #351*code#©
Check status of barr all incoming calls when roaming *#351#©
Activate barr all incoming calls **353*code#©
Deactivate barr all incoming calls #35

is there another copy of your sim card?

Please try the following procedure to register the handset:

1. Place the unregistered handset in the telephone base. If PRESS FIND HS 4 SEC ON BASE does not appear on the handset screen after a few seconds, remove the handset and place it in the telephone base again.
   
2. On the telephone base, press and hold FIND HANDSET for about four seconds (until the red IN USE light on the telephone base turns on) and then release the button. The handset shows PLEASE WAIT... and it takes up to 60 seconds to complete the registration. The handset shows HANDSET X REGISTERED (X represents the handset number assigned) and you hear a beep when the registration completes.

When the registration is complete, the newly registered handset is assigned the next available handset registration number. For instance, if you already have HANDSET 1 and HANDSET 2, the next registered handset will be HANDSET 3

Friend i think u r cell phone setting are mess up
so please go to ur cell phone setting and go to security and then try to find restriction menu and then turn of it if u find it then
u got
three options like
outgoing call
incoming call
messege
phone book restriction

so set it unselect

Use the network services menu for this...

Use this menu to access network services. Please
contact your service provider to check their availability and subscribe to them, if you wish.

This network service allows you to restrict your calls.
1. Select a call barring option:
• All outgoing: prohibit outgoing calls.
• International: prohibit international calls.
• International except home: only allow calls
to numbers within the current country when
you are abroad, and to your home country.
• All incoming: prohibit incoming calls.
• Incoming while abroad: prohibit incoming
calls when you use your phone outside of your
home country.
• Cancel all: cancel all call barring settings,
allowing to be sent and received normally.
• Change barring password: change the call
barring password obtained from your service
provider.
2. Select the type of calls to be barred.
This network service allows you to restrict your calls.
1. Select a call barring option:
• All outgoing: prohibit outgoing calls.
• International: prohibit international calls.
• International except home: only allow calls
to numbers within the current country when
you are abroad, and to your home country.
• All incoming: prohibit incoming calls.
• Incoming while abroad: prohibit incoming
calls when you use your phone outside of your
home country.
• Cancel all: cancel all call barring settings,
allowing to be sent and received normally.
• Change barring password: change the call
barring password obtained from your service
provider.
2. Select the type of calls to be barred.

if you have any queries about your mobile..you can have a look at this user manual which can be downloaded from

http://safemanuals.com/user-guide-instructions-owner-manual/SAMSUNG/SGH-D600-_E

hope this helps :)