Telephone numbers in Indonesia have different systems for land lines and mobile phones: land lines use area codes, while mobile phones do not.For land line area codes, the digit "0" is added in front when dialing domestic long distance from within Indonesia, but is always omitted when calling from abroad. Instead, callers would use the Indonesian country code +62, followed by the area code, without the "0". Domestic phone numbers in large cities have 8 digits, and in other areas 7 digits. Mobile phone numbers have a total of 10 or 11 digits for postpaid depending on the operator, whereas prepaid services get 11 to 12 digits determined by the operator. Until October 1999, East Timor was included in the Indonesia Telephone Code Plan, using the area codes 0390 (for Dili) and 0399 for (Baucau). To make a phone call to Indonesia from abroad, the following format is used: <IDD access number> 62 <area code> <phone number> For calls to mobile wireless phone (GSM) from abroad: <IDD access number> 62 <prefix> <phone number>