Fast dial tone on analog interface port

[tsunami]

Good Day everyone!

One port of the analog interface of the AMIX board has a fast dial tone. Before this happened, it had a normal dial tone and it was functioning normally. No problem with the incoming and outgoing calls both internal and external. However, when it changed to this kind of tone, it can only call internal numbers. I already put this port logically out of service then change a telephone unit but still it occurs. I double checked the restriction and barring but it wasn't change. This is the configuration that was used earlier before the fast dial tone occurred. I already tried to cancel the call forward feature thinking that it was forwarded but sad to say that it wasn't.

Does anybody had experienced this kind of situation. Please help... Thank you in advance.

[et]

May be you have locked this set. Try to unlock by dialling Lock/Unlock prefix followed by password of this set.

[tsunami]

Thank you very much et...