Automatic logging-on device for long distance calls

Abstract

A device to make long distance call on the network automatically includes the input end of its AC switch, coming call ringing current picker, picking circuit of pick-up and hang-up to be connected with external line separately, the input end of coming call ringing current being connected with pick-up picking circuit and its output end is connected with cut-off output circuit, the output end of cut-off output circuit to be connected with AC switch, the input end of dual audio frequency decoding circuit to be connected with the input end of telephone set and its output being connected with non-zero picking circuit and zero picking circuit separately, the output end of zero picking circuit being connected with automatic dialer in which its output end is connected with the dialing over picking circuit and the external line, the output end of non zero picking circuit, dialing over picking circuit, hang-up picking circuit to be connected with closed output circuit in which its output end is connected with AC switch.

Description

1. Technical field: [0001] The invention relates to a device for automatically accessing an IP network when making a long-distance call, and belongs to the technical field of manufacturing additional devices for telephone sets. 2. Background technology: [0002] At present, IP telephony has been paid more and more attention by people because of its low call cost, clear voice, wide coverage and large usage. When people make domestic or international long-distance calls, they often think of using IP phones, but because there are currently many telecommunications companies (such as China Telecom, China Unicom, Netcom, Jitong, Railcom, etc.) their IP phone numbers are not consistent. Not only is it difficult to remember, it is also inconvenient to use. For example, if you want to make a long-distance call to Beijing, you need to dial the 5-digit Internet access number of the IP phone, then dial the area code, and finally dial the phone number, and you need to dial 16 digits in ...

AI Technical Summary

Problems solved by technology

When people make domestic or international long-distance calls, they often think of using IP phones, but because there are currently many telecom companies (such as China Telecom, China Unicom, China Netcom, Jitong, Railcom, etc.) their IP phone numbers are not consistent. Not only is it difficult to remember, it is also inconvenient to use

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