ISDN Intelligent Network Voice Mail Internet Service National Trunk Service Int. When a telephone is shifted from one position to another in the same room it is known as internal shifted from one room to another or from one building to another building in the same locality or different locality, shift is called external shift. Shifts Within the same exchange area.
Shifts form one exchange area to the another exchange area in multi exchange system.
All India Shift. In all other cases of local shift Rs. Permissible will be sent in the name of tenant. Correspondence entertained with landlord. Landlord to give undertaking for responsibility of payment of all telephone dues.