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US 5,953,407 AGranted
Distinctive ringing and distinctive call-waiting tones in an ISDN
AssigneeNortel Networks Limited
InventorsGenzao Zhang, Howard Martin Sandler, Shahram Dowlatshahi
Life of this patent
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Abstract
In a multi-service wireless, or wired, integrated services digital network, the type-of-call information in a call setup message may indicate the call is a voice call, a fax call or a data call. This information is used to generate a distinctive ring at the called subscriber unit, provided the called subscriber unit is not busy with another call. If the called subscriber unit is busy with a voice call, then a distinctive call waiting tone signal is generated based on the type-of-call information.
Claims12
In an integrated services digital network, a method for identifying non-voice calls comprising:
- receiving an indication of a called subscriber unit and an indication of type-of-call, said type-of-call indication indicating said call is either a voice call or a non-voice call;
- constructing an out-of-band call setup message to said called subscriber unit, said call setup message including a voice or non-voice indication for said call based on said type-of-call indication;
- transmitting said call setup message to said called subscriber unit;
- at said called subscriber unit, if not busy with another call, generating a distinctive ring signal based on said indication in said call setup message;
- and
- at said called subscriber unit, if busy with a voice call, generating a distinctive call-waiting tone signal based on said indication in said call setup message.
3 more elements
In an integrated services digital network, a method for identifying non-voice calls comprising:
- receiving an indication of a called subscriber unit and an indication of type-of-call, said type-of-call indication indicating said call is either a voice call or a non-voice call;
- constructing an out-of-band call setup message to said called subscriber unit, said call setup message including a voice or non-voice indication for said call based on said type-of-call indication;
- transmitting said call setup message to said called subscriber unit;
- and
- at said called subscriber unit, if not busy with another call, generating a distinctive ring signal based on said indication in said call setup message;
- wherein said type-of-call indication, when indicating said call is a non-voice call, indicates said call is one of a fax and data call and wherein the step of generating a distinctive ring signal based on said indication in said call setup message comprises generating a voice indicating distinctive ring signal if said call setup message indicates a fax call, and a data indicating distinctive ring signal if said call setup message indicates a data call.
3 more elements
In an integrated services digital network, a method for identifying non-voice calls comprising:
- receiving an indication of a called subscriber unit and an indication of type-of-call, said type-of-call indication indicating said call is either a voice call or a non-voice call;
- constructing an out-of-band call setup message to said called subscriber unit, said call setup message including a voice or non-voice indication for said call based on said type-of-call indication;
- transmitting said call setup message to said called subscriber unit;
- at said called subscriber unit, if not busy with another call, generating a distinctive ring signal based on said indication in said call setup message;
- and
- at said called subscriber unit, if busy with a voice call, generating a distinctive call-waiting tone signal if said indication in said call setup message indicates a voice call and not generating any tone signal if said indication in said call setup message indicates a non-voice call.
3 more elements
In a multi-service wireless integrated services digital network, a method for identifying non-voice calls comprising:
- receiving an indication of a called subscriber unit and an indication of type-of-call, said type-of-call indication indicating said call is either a voice call or a non-voice call;
- constructing an out-of-band call setup message to said called subscriber unit, said call setup message including a voice or non-voice indication for said call based on said type-of-call indication;
- transmitting said call setup message to said called subscriber unit;
- at said called subscriber unit, if not busy with another call, generating a distinctive ring signal based on said indication in said call setup message;
- and
- at said called subscriber unit, if busy with a voice call, generating a distinctive call-waiting tone signal based on said indication in said call setup message.
3 more elements
In a multi-service wireless integrated services digital network, a method for identifying non-voice calls comprising:
- receiving an indication of a called subscriber unit and an indication of type-of-call, said type-of-call indication indicating said call is either a voice call or a non-voice call constructing an out-of-band call setup message to said called subscriber unit, said call setup message including a voice or non-voice indication for said call based on said type-of-call indication;
- transmitting said call setup message to said called subscriber unit;
- and
- at said called subscriber unit, if not busy with another call, generating a distinctive ring signal based on said indication in said call setup message;
- and
- wherein said type-of-call indication, when indicating said call is a non-voice call, indicates said call as one of a fax and data call and wherein the step of generating a distinctive ring signal based on said indication in said call setup message comprises generating a voice indicating distinctive ring signal if said call setup message indicates a voice call, a fax indicating distinctive ring signal if said call setup message indicates a fax call, and a data indicating distinctive ring signal if said call setup message indicates a data call.
3 more elements
In a multi-service wireless integrated services digital network, a method for identifying non-voice calls comprising:
- receiving an indication of a called subscriber unit and an indication of type-of-call, said type-of-call indication indicating said call is either a voice call or a non-voice call;
- constructing an out-of-band call setup message to said called subscriber unit, said call setup message including a voice or non-voice indication for said call based on said type-of-call indication;
- transmitting said call setup message to said called subscriber unit;
- at said called subscriber unit, if not busy with another call, generating a distinctive ring signal based on said indication in said call setup message;
- and
- at said called subscriber unit, if busy with a voice call, generating a distinctive call-waiting tone signal if said indication in said call setup message indicates a voice call and not generating any tone signal if said indication in said call setup message indicates a non-voice call.
3 more elements
A multi-service wireless integrated services digital network for identifying non-voice calls comprising:
- a base station subsystem for receiving an out-of-band call setup message from a mobile switching centre for a called subscriber unit, said call setup message including a voice or non-voice indication for a call, said base station subsystem for sending said out-of-band call setup message to said called subscriber unit;
- and
- said called subscriber unit, if not busy with another call, for generating a distinctive ring signal based on said indication in said call setup message and for passing said distinctive ring signal to associated terminal equipment wherein said called subscriber unit is also for, if busy with a voice call, generating a distinctive call-waiting tone signal based on said indication in said call setup message and passing said distinctive call-waiting tone signal to voice terminal equipment associated with said called subscriber unit.
A multi-service wireless integrated services digital network for identifying non-voice calls comprising:
- a base station subsystem for receiving an out-of-band call setup message from a mobile switching centre for a called subscriber unit, said call setup message including a voice or non-voice indication for a call, said base station subsystem for sending said out-of-band call setup message to said called subscriber unit;
- and
- said called subscriber unit, if not busy with another call, for generating a distinctive ring signal based on said indication in said call setup message and for passing said distinctive ring signal to associated terminal equipment wherein said called subscriber unit is also for, if busy with a voice call, generating a distinctive call-waiting tone signal based on said indication in said call setup message and passing said distinctive call-waiting tone signal to voice terminal equipment associated with said called subscriber unit and not generating any tone signal if said indication in said call setup message indicates a non-voice call.
In an integrated services digital network, a method for identifying non-voice calls, comprising:
- receiving an indication of a called subscriber unit and an indication of a type-of-call, said type-of-call indication indicating said call is either a voice call or a non-voice call;
- constructing an out-of-band call setup message to said called subscriber unit, said call setup message including a voice or non-voice indication for said call based on said type-of-call indication;
- transmitting said call setup message to said called subscriber unit;
- at said called subscriber unit, if busy with a voice call, generating a distinctive call-waiting tone signal if said indication in said call setup message indicates a voice call and not generating any tone signal if said indication in said call setup message indicates a non-voice call.
1 more element
Dependencies are inferred from the claim text.