Claims
- 1. A communication system comprising a primary station and at least one secondary station, the secondary station having support for a facility optionally provided by the system, which support is selectively enabled at the secondary station, the primary station having means for formatting and encoding message data into message code words, means for concatenating an address code word of an addressed secondary station to the message code words, means for providing indicia indicative of the facility in a field contained in at least one of the message code words concatenated with the address code word and transmitting means for transmitting the concatenated address code word, indicia and message code words, and the at least one secondary station having means for determining if the address code word in a message received by said receiving means is one assigned to the secondary station, means responsive to determining that the address code word is one assigned to the secondary station for decoding said indicia and message code words, means for enabling presently disabled support for the facility at the secondary station in response to the received indicia and means for storing the decoded message data.
- 2. A primary station for use in a communication system as claimed in claim 1, comprising means for formatting and encoding message data into message code words, means for appending an address code word of a secondary station to the formatted message, means for providing indicia indicative of said optional facility being in a field contained in a message code word concatenated with the address code word and transmitting means for transmitting the concatenated address code word, indicia and message code words.
- 3. A secondary station for use in a communication system as claimed in claim 1, comprising: means for receiving transmissions, means for determining if the address code word in a message received by said receiving means is one assigned to the secondary station, means responsive to determining that the address code word is one assigned to the secondary station for decoding said indicia and message code words, means for enabling the normally disabled support for the facility at the secondary station in response to the received indicia and means for storing the decoded message data.
- 4. A secondary station as claimed in claim 3, including means for storing at least one subscription free identifier.
- 5. A method of transmitting messages in a communication system comprising a primary station and at least one secondary station, the secondary station being identifiable by an address code word and having support for a facility optionally provided by the primary station, which support is selectively enabled at the secondary station, the primary station transmitting message signals in the format of the address code word of an addressed secondary station concatenated with a plurality of message code words, wherein the primary station enables presently disabled support for the facility at the secondary station by transmitting indicia representative of the facility in a field contained in at least one of the message code words concatenated with the secondary station's address code word.
- 6. The method as claimed in claim 5, wherein the facility is associated with a receiver identity code of the secondary station.
- 7. The method as claimed in claim 6, wherein the the facility comprises call sequence numbering and the sequence order is specified in said indicia.
- 8. The method as claimed in claim 6, wherein the facility comprises subscription services and that a subscription service identifier is transmitted as the indicia.
- 9. The method as claimed in claim 8, wherein call sequence numbering is enabled on said subscription service and that a call sequence follows said subscription service identifier in said field.
- 10. The method as claimed in claim 6, wherein the facility comprises flexible grouping of secondary stations and in that said field comprises an extended address field containing characters indicating that flexible grouping is being enabled.
- 11. The method as claimed in claim 6, wherein the primary station reprograms a secondary station by transmitting a base receiver identity code as the address code word followed by an extended address field comprising a command character and a character defining which of the receiver identity codes pre-programmed into the secondary station is to be modified.
- 12. The method as claimed in claim 5, wherein said indicia comprises a command character and at least one character indicative of the optional facility.
- 13. A method of transmitting messages in a communication system comprising a primary station and at least one secondary station, the secondary station being identifiable by an address code word and being selectively enabled to interpret message signals from the primary station in a format defined by a facility optionally provided by the system, the message signals transmitted by the primary station being in the format of the address code word of an addressed secondary station concatenated with a plurality of message code words, wherein the primary station signals the secondary station that message signals from the primary station have been formatted in accordance with the optionally provided facility by transmitting indicia representative of the facility in a field contained in at least one of the message code words concatenated with the secondary station's address code word, and in response to the signaling by the primary station, the secondary station enables presently disabled support to interpret the message signals formatted in accordance with the optionally provided facility.
Priority Claims (1)
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9317884 |
Aug 1993 |
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Parent Case Info
This is a continuation of application Ser. No. 08/416,915, filed Apr. 20, 1995, now abandoned which is a 371 of PCT/IB94/00255..
US Referenced Citations (3)
Foreign Referenced Citations (1)
Number |
Date |
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2225140 |
May 1990 |
GBX |
Non-Patent Literature Citations (1)
Entry |
The Book of the CCIR Radiopaging Code No. 1, 1986, Appendix 1, pp. 38-40. |
Continuations (1)
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416915 |
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