User Guide for the SIP-T19P/SIP-T19 IP Phone583. Click Conf irm to add the block out number.NotePublic telephone networks in countries around the world have a single emergencytelephone number (emergency services number), that allows a caller to contact localemergency services for assistance when necessary. The emergency telephone numbermay differ from country to country. It is typically a three-digit number so that it can beeasily remembered and dialed quickly. Some countries have different emergencynumbers for different emergency services.You can specify the emergency telephone number on the IP phone for contacting theemergency services in an emergency situation.NoteTo s pecify emergency numbers via web user interface:1. Click on F e atures->Phone Lock.2. Enter the emergency number in the Emergency field.For multiple numbers, enter a comma between every two emergency numbers. Thedefault emergency numbers are 110, 911 and 120.3. Click Conf irm to accept the change.Not eContact your local phone service provider for available emergency numbers in yourarea.Block out number is configurable via web user interface only.Emergency number is configurable via web user interface only.