Special service call routing
First Claim
1. A method of setting up a facsimile call comprising the steps of:
- recognizing a special dialed prefix of the call indicating that the call is from a facsimile station;
responsive to said step of recognizing, setting a facsimile indicator in data of a common channel signaling (CCS) message being sent to a switching system for further routing said call; and
processing the call as a facsimile call in the switching system.
1 Assignment
0 Petitions
Accused Products
Abstract
This invention relates to methods of establishing facsimile (fax) connections. When it is determined that a call is a fax call, a fax indicator is sent with Common Channel Signaling (CCS) messages for that call. If a call with a fax indicator is received in a destination switching office, then the destination office checks to see if the called number is a fax number; if not, translation is made to find the number of a fax station for serving fax calls to the called number, and the call is completed to that fax station. Fax calls may be recognized by a fax class mark in an originating message from an Integrated Services Digital Network (ISDN) line or a dialed prefix such as #, #3, or an alternative common carrier code (10XXX) from an ordinary line. Calls may be automatically redirected to a store and forward system on busy or no answer, routed to one of a plurality of alternative destinations based on the day and time, junk fax calls may be screened, and a fax message waiting lamp on the called (voice) destination may be operated. For international calls, a translation from voice to fax may be made at an egress gateway switch; the fax calls may also be automatically routed over low distortion international transmission facilities.
257 Citations
23 Claims
-
1. A method of setting up a facsimile call comprising the steps of:
-
recognizing a special dialed prefix of the call indicating that the call is from a facsimile station; responsive to said step of recognizing, setting a facsimile indicator in data of a common channel signaling (CCS) message being sent to a switching system for further routing said call; and processing the call as a facsimile call in the switching system. - View Dependent Claims (2, 3, 7, 8, 9, 10, 11, 12, 13, 14, 15)
-
-
4. A method of setting up a facsimile call comprising the steps of:
-
in a first switching system, recognizing a facsimile call identifier in a signaling message from customer equipment; responsive to said step of recognizing, setting a facsimile indicator in data of a common channel signaling (CCS) message being sent to a second switching system for further routing said call; and processing the call as a facsimile call in the second switching system. - View Dependent Claims (5, 6)
-
-
16. A method of setting up a facsimile call comprising the steps of:
-
in a first switching system, recognizing that the call is from a facsimile station; responsive to said step of recognizing, setting a facsimile indicator in a common channel signaling (CCS) message being sent to a second switching system for further routing said call; and responsive to receiving said message in said second switching system, checking whether the call is to be forwarded to a store and forward system; and responsive to the check, forwarding the call from said second switching system to a store and forward system. - View Dependent Claims (17, 18)
-
-
19. A method of setting up a facsimile call comprising the steps of:
-
in a first switching system, recognizing that the call is from a facsimile station; responsive to said step of recognizing, setting a facsimile indicator in data of a common channel signaling (CCS) message being sent to a second switching system; and processing the call as a facsimile call in the second switching system; wherein said step of processing comprises; responsive to receiving said message, checking whether the call is to be forwarded to another facsimile line; and responsive to the check, forwarding the call to said another facsimile line.
-
-
20. A method of sending a facsimile message from a first facsimile station to a second facsimile station comprising:
-
connecting said first facsimile station to a first switching system; recognizing in said first switching system that said first station is a facsimile station; extending the connection from the switching system to an egress switch of a telecommunications network and notifying said egress switch that said connection is for transmitting facsimile signals; in said egress switch, checking a store and forward indicator in data of the second facsimile station; if the second facsimile station is busy and the indicator is set, extending the connection from said egress switch to a facsimile store and forward facility; and subsequently, delivering the message from the store and forward facility to the second facsimile station. - View Dependent Claims (21)
-
-
22. A method of setting up a facsimile call comprising the steps of:
-
recognizing that the call is from a facsimile station; responsive to said step of recognizing, setting a facsimile indicator in a common channel signaling (CCS) message being sent to a switching system for further routing said call, said message comprising a first number identifying said facsimile station and a second number identifying a destination; responsive to receiving said message in said switching system, translating from said second number to derive screening data; and responsive to said step of translating, comparing that said screening data with said first number to determine whether the call should be extended from said switching system toward another switching system for completing said call.
-
-
23. A method of setting up a facsimile call comprising the steps of:
-
recognizing that the call is from a facsimile station; responsive to said step of recognizing, setting a facsimile indicator in data of a common channel signaling (CCS) message being sent to a switching system for further routing said call; responsive to receipt of said CCS message, detecting that said call is an international call; and translating from a destination number received in said CCS message to an associated facsimile destination number for extending said call from said switching system toward a facsimile station associated with said destination number.
-
Specification