| 摘要 |
PROBLEM TO BE SOLVED: To provide a convenient communication terminal device that does not require an owner or the like to register a telephone number of an opposite party by himself, and that can make a call to the opposite party on the basis of telephone number data if the owner or the like makes a call for the first time to the opposite party whose telephone number is not known in advance by the owner.SOLUTION: A recording device for a communication terminal device 2 is used in a communication terminal device such as a land-line phone device, mobile phone device, and multifunctional mobile telephone device (telephone device or the like). It has read-only telephone number data and is detachably attached to a device body part 1 of the communication terminal device. |
