Voice level controller
AssigneeCanon Kabushiki Kaisha
InventorOsamu Hirata
Life of this patent
Estimating the term…
Abstract
A voice level controller comprises a discriminator for determining whether speech is transmitted through an analog line or not, and a control circuit for controlling a speech level in accordance with the output of the discriminator.
Claims26
A signal level controller for an outgoing call of a calling station comprising:
- sending means coupled to an ISDN for sending a SETUP message to the ISDN;
- receiving means coupled to the ISDN for receiving a CALL PROCEEDING message including a Progress identifier formed in the ISDN in response to the SET UP message for informing the calling station whether a station called by the outgoing call of the calling station is connected to an analog network or a digital network;
- and
- control means coupled to the receiving means for controlling a signal level of the station called by the outgoing call of the calling station in accordance with the Progress identifier received by said receiving means.
A method for controlling a signal level of an outgoing call at a calling station, comprising the steps of:
- sending an outgoing call signal including a SETUP message to an ISDN;
- receiving a CALL PROCEEDING message including a Progress identifier formed in the ISDN in response to the SETUP message for informing the calling station whether a station called by the outgoing call of the calling station is connected to an analog network or a digital network;
- and
- controlling a signal level of the station called by the outgoing call of the calling station in accordance with the received Progress identifier.
A signal level controller for an outgoing call of a calling station comprising:
- sending means coupled to an ISDN for sending a SETUP message to the ISDN;
- receiving means coupled to the ISDN for receiving an ALERTING message including a Progress identifier formed in the ISDN in response to the SETUP message for informing the calling station whether a station called by the outgoing call of the calling station is connected to an analog network or a digital network;
- and
- control means coupled to the receiving means for controlling a signal level of the station called by the outgoing call of the calling station in accordance with the Progress identifier received by said receiving means.
A method for controlling a signal level of an outgoing call at a calling station, comprising the steps of:
- sending an outgoing call signal including a SETUP message to an ISDN;
- receiving an ALERTING message including a progress identifier formed in the ISDN in response to the SETUP message for informing the calling station whether a station called by the outgoing call of the calling station is connected to an analog network or a digital network;
- and
- controlling a signal level of the station called by the outgoing call of the calling station in accordance with the received Progress identifier.
A signal level controller for an outgoing call of a calling station comprising:
- sending means coupled to an ISDN for sending a SETUP message to the ISDN;
- receiving means coupled to the ISDN for receiving a CONNECT message including a Progress identifier formed in the ISDN in response to the SETUP message for informing the calling station whether a station called by the outgoing call of the calling station is connected to an analog network or a digital network;
- and
- control means coupled to the receiving means for controlling a signal level of the station called by the outgoing call of the calling station in accordance with the Progress identifier received by said receiving means.
A method for controlling a signal level of an outgoing call at a calling station, comprising the steps of:
- sending an outgoing call signal including a SETUP message to an ISDN;
- receiving a CONNECT message including a Progress identifier formed in the ISDN in response to the SETUP message for informing the calling station whether a station called by the outgoing call of the calling station is connected to an analog network or a digital network;
- and
- controlling a signal level of the station called by the outgoing call of the calling station in accordance with the received Progress identifier.
Dependencies are inferred from the claim text.