| 摘要 |
PURPOSE:To automatically set an R point clock suitable for an ISDN communication system. CONSTITUTION:In order to make communication among plural ISDNs whose communication speed differs from each other, a composite ISDN having an ISDN terminal equipment varying an R point clock of an R point clock output circuit 1 is featured to be provided with an R point clock speed identification information input means 2 receiving R point clock speed identification information together with path setting information to an incoming call destination in the case of dialing, or an extract means extracting user speed information in a call setup message received in the case of the arrival of an incoming call, a clock revision control means 3 outputting revision information in response to the R point clock speed identification information or the user speed information and an R point clock revision means 4 revising an R point clock in response to the revision information. |
