| 摘要 |
PROBLEM TO BE SOLVED: To simply set an IP address by using a connected telephone set in the Internet telephone system. SOLUTION: When a button '*' or '#' of a telephone set is depressed, an address setting mode is set and numerals entered sequentially are stored in an address storage section 21. An address verification section 22 verifies whether or not the numerals are proper as the IP address, and when proper, a ping section 23 applies ping processing to them to check the arrival possibility to a speech destination. When any error is in existence in the checking above, address re-entry is urged in voice by a message synthesis section 25 and a voice output section 26. When a proper address is set, a transmission state detection section 24 detects a transmission state of a network based on the response in the ping processing to control a quantization rate of voice data by a quantization section 13. |
