WO1999009759A1 - Management of calling name delivery in telephone networks providing for telephone number portability - Google Patents
Management of calling name delivery in telephone networks providing for telephone number portability Download PDFInfo
- Publication number
- WO1999009759A1 WO1999009759A1 PCT/US1998/016936 US9816936W WO9909759A1 WO 1999009759 A1 WO1999009759 A1 WO 1999009759A1 US 9816936 W US9816936 W US 9816936W WO 9909759 A1 WO9909759 A1 WO 9909759A1
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- Prior art keywords
- cnam
- network
- telephone
- gapping
- switch
- Prior art date
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- 238000007726 management method Methods 0.000 title description 8
- 238000000034 method Methods 0.000 claims abstract description 14
- 230000004044 response Effects 0.000 claims description 31
- 238000012545 processing Methods 0.000 description 8
- 230000011664 signaling Effects 0.000 description 4
- 230000008859 change Effects 0.000 description 3
- 230000002093 peripheral effect Effects 0.000 description 3
- 238000004578 scanning tunneling potentiometry Methods 0.000 description 3
- 235000019832 sodium triphosphate Nutrition 0.000 description 3
- 238000004458 analytical method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 108091006146 Channels Proteins 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
- 238000013519 translation Methods 0.000 description 1
Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/72—Finding out and indicating number of calling subscriber
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q3/00—Selecting arrangements
- H04Q3/0016—Arrangements providing connection between exchanges
- H04Q3/0029—Provisions for intelligent networking
- H04Q3/005—Personal communication services, e.g. provisions for portability of subscriber numbers
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13091—CLI, identification of calling line
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13097—Numbering, addressing
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13102—Common translator
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13103—Memory
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13166—Fault prevention
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13176—Common channel signaling, CCS7
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13345—Intelligent networks, SCP
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04Q—SELECTING
- H04Q2213/00—Indexing scheme relating to selecting arrangements in general and for multiplex systems
- H04Q2213/13387—Call gapping
Definitions
- the present invention relates to the network management of services or features in telephone networks and, more specifically, to the network management of the calling name (CNAM) service in telephone networks which also provide a number portability (NP) service.
- CNAM calling name
- NP number portability
- the switch maintained control over the call processing and merely requested and received data from the peripheral devices.
- at least some of the intelligence to process calls may be offloaded from the switch to a service control point (SCP) whose software can be readily modified by the local carrier in order to provide new calling services (e.g., voicemail).
- SCP service control point
- IPs intelligent peripherals
- the current IN architecture may further include a service node (SN), which comprises a standalone computer platform dedicated to providing a particular calling service autonomously (i.e., independently of the SCP or the switch).
- SN service node
- the various IN elements or nodes are interconnected by a common channel signaling (CCS) data network which uses, for example, the Signaling System No. 7 (SS7) protocol.
- CCS Signaling System No. 7
- SS7 Signaling System No. 7
- STP signaling transfer point
- the switch analyses call related information (e.g., calling customer service profile record, dialed digits, etc.) to determine whether it requires an IN feature for routing the call or providing a calling service. If the switch detects that an IN feature should be invoked, it sends a query (data message) to the SCP over the SS7 network. In response, the SCP can assume control over call processing and execute the desired service internally or, as necessary, invoke an external resource (IP, SN or another SCP) which can deliver the desired service. Alternatively, the SCP may simply access a database and return the desired data (e.g., routing information) to the switch over the SS7 network.
- call related information e.g., calling customer service profile record, dialed digits, etc.
- NP number portability
- DN telephone directory number
- NPA 10-digit number represented by NPA-NXX-XXXX (where "NPA” designates the numbering plan area in which the subscriber is located, "NXX” is a 3-digit prefix assigned to the local switch to which the subscriber is connected, and "XXXX” is a four-digit suffix assigned by the local switch operator to the subscriber).
- a subscriber to the NP feature may change his or her telephone service, for example, from plain old telephone service (POTS) to an integrated services digital network (ISDN), from one telephone service provider to another, or from one physical location to another, while retaining the same DN.
- POTS plain old telephone service
- ISDN integrated services digital network
- the first phase for NP implementation, called local number portability (LNP) covers changing service providers or physical locations within a rate center while using a "portable" DN assigned by one of the networks in that rate center (i.e., a DN from a NPA-NXX number series belonging to that network and designated by that network for use as a portable number series).
- LNP local number portability
- Such subscription changes are recorded in a LNP database maintained by the SCP of that network.
- the LRN function allows the switch that is processing a call to a portable DN to send a query containing that DN to the SCP requesting routing information for the switch to which the called DN is now connected.
- the SCP checks its LNP database and returns to the inquiring switch a response message containing the LRN for the switch that currently serves the called subscriber so that the call can be routed to the serving switch.
- the GTT relay function allows the network to route queries relating to a portable DN to the appropriate destination(s).
- the first six digits of any DN i.e., the NPA-NXX
- the first six digits of a portable DN cannot be used for this identification purpose (since the subscriber now has changed location or telephone companies).
- the GTT relay function thus is used to determine the address for the network node(s) that provide(s) the desired service or feature for a portable subscriber (e.g., a destination point code for a particular node or a capability code specifying a group of nodes capable of performing a particular function).
- the GTT relay function can be implemented in a network node such as a STP, for example.
- Queries relating to a portable DN can be directed to the GTT relay node which translates the portable DN in the query into the correct destination address.
- Another current network feature is the calling name (CNAM) delivery service, also known as the caller ID with name feature.
- the CNAM feature allows the customer premises equipment (CPE) of the called party to record and display the name of the calling party and the date and time of the call during the first silent interval in the ringing cycle.
- CPE customer premises equipment
- the SCP is provided with a database containing a list of DNs and corresponding subscriber names.
- the switch can send a message containing the calling party number to the SCP which then performs a lookup in the CNAM database to find the subscriber name associated with the calling party number. Once found in the CNAM database, the name of the calling party can be returned in a response message from the SCP to the switch which, in turn, forwards that name to the CPE of the called party.
- the SCP Since the CNAM database may be shared among several switches in the network, it is possible that the SCP containing the CNAM database may become overloaded with queries for the CNAM database.
- the SCP therefore is provided with an automatic call/code gapping (ACG) load control function which enables the SCP to order a particular node (e.g., switch) for a particular period of time to send no more than one CNAM query for any number belonging to a particular NPA-NXX series per a certain gap interval.
- ACG automatic call/code gapping
- ACG is invoked in a node against a particular NPA-NXX number series and for the duration of the overload protection period, whenever that node sends to the SCP a CNAM query for a number in that NPA-NXX series, no other CNAM query for that NPA- NXX series can be sent from that node for a time period equal to the defined gap interval. This reduces the frequency of CNAM queries by that node for that NPA- NXX series to no more than one query per gap interval.
- ACG network management function may be considered necessary for effective deployment of the CNAM feature
- application of the ACG function may lead to undesirable results in interconnected networks which support both the LNP and CNAM features, such as the three exemplary networks shown in FIG. 1.
- FIG. 1 for the sake of simplicity, it is assumed that in each of the three networks the LNP and CNAM features are provided by a single SCP.
- the first network includes a SCP 16 having a LNP database (LNP DB) 18 and a CNAM database (CNAM DB) 20, while the second network includes a SCP 36 having a LNP DB 38 and a CNAM DB 40, and the third network includes a SCP 56 having a LNP DB 58 and a CNAM DB 60.
- the GTT relay function is assumed to have been implemented in STPs 14, 34 and 54 in the first, second and third networks, respectively. Assume that a subscriber 10 in the first network places a call to a subscriber 30 in the second network.
- the subscriber 10 has ported his telephone number from the second network (i.e., this telephone number belongs to a portable NPA-NXX series assigned by the second network) and that the subscriber 30 has the CNAM feature activated.
- the call from the subscriber 10 is handled by the local switch in the end office (EO) 12 in the first network.
- the EO 12 analyses the dialed digits and sends call setup signaling data via STPs 14 and 34 to EO 32 in the second network where the called subscriber 30 is located.
- the EO 32 checks the subscriber profile for the subscriber 30 and determines that the CNAM feature is activated for this subscriber.
- the EO 32 generates a CNAM query containing the calling party number (CgPN) and routes this CNAM query to the local SCP 36.
- the SCP 36 Upon receiving the CNAM query, the SCP 36 will not be able to find the CgPN in the CNAM DB 40 (since the number has been ported). Thus, the SCP 36 will formulate a so-called CNAM "requery" for transmission to the STP 34 (which implements the GTT relay function necessary for routing queries for portable numbers to the appropriate destination).
- the GTT relay function in the STP 34 in the second network will route the CNAM query received from the SCP 36 to the STP
- the STP 14 which provides the GTT relay function in the first network.
- the STP 14 will route the CNAM query to the SCP 16 which maintains CNAM DB 20 containing the CgPN and other numbers connected to the EO 12. If the SCP 16 is in overload condition, the response message from the SCP 16 to the SCP 36 will contain an ACG order requesting SCP 36 to apply gapping (in accordance with the ACG data in the message) to subsequent CNAM requeries relating to DNs in the NPA-NXX series of the portable CgPN.
- This interference problem also occurs if the EO 32 were to global title route the initial CNAM query instead of routing it to the SCP 36.
- the CNAM query would be routed from the EO 32 through the STPs 34 and 14 to the SCP 16.
- the CNAM response message containing the ACG order from SCP 16 would be returned to the EO 32. If most of the other 9999 subscribers in the portable NPA-NXX series of the CgPN reside in the second network or the third network, application of gapping to this series at the EO 32 means that CNAM queries relating to these other subscribers are gapped by the EO 32 even though such queries would be handled by the SCP 36 or the SCP 56, which may not be under an overload condition.
- CNAM queries involving any calling party number (CgPN) that is in a portable series can be directed to an application in the local SCP which can determine the location routing number (LRN) associated with that portable number.
- CgPN calling party number
- LRN location routing number
- the local SCP application can obtain the LRN for any portable number within a rate center from the LNP DB in the local network.
- the local SCP application may maintain its own database of portable numbers and their respective LRNs.
- the local SCP application Upon receiving a CNAM query containing a portable CgPN, the local SCP application will generate a new CNAM query (requery) which is routed through the GTT relay node to the remote CNAM DB using the CgPN received in the original CNAM query.
- the local SCP application also will save the corresponding LRN (or at least the first six digits, or NPA-NXX portion, of this LRN) for use in performing call gapping in the event that the SCP which handles the remote CNAM DB is found to be in an overload condition, as may be indicated in the response to the CNAM requery.
- the local SCP application will initiate code gapping on subsequent CNAM requeries containing either portable numbers that are associated with the same LRN as the saved LRN, or non- portable numbers belonging to the same number series (NPA-NXX) as the saved LRN (instead of applying gapping to CNAM requeries involving numbers in the same number series as the portable CgPN, as in the prior art).
- the local SCP application will route a CNAM requery to the remote CNAM DB in that network using the non-portable CgPN, but not the GTT relay function since the CgPN is not a portable number.
- the local SCP application will apply gapping to subsequent CNAM requeries containing non-portable numbers belonging to the same number series (NPA-NXX) as the CgPN (in this case, as the CgPN is a non-portable number, gapping can be applied to the NPA-NXX of the CgPN since that NPA-NXX correctly identifies the switch to which the CgPN is connected as well as the remote CNAM DB in which the name of the corresponding subscriber is stored).
- NPA-NXX non-portable numbers belonging to the same number series
- call gapping will be applied to subsequent CNAM queries destined to the CNAM DB node which ordered the gapping rather than to a CNAM DB node which is not under overload.
- the present invention provides a service control point (SCP) in one of a plurality of telephone networks including a plurality of subscribers each assigned a telephone number in a predetermined number series associated with a particular switch in one of the telephone networks, with one or more of the number series being designated as portable number series and including telephone numbers assigned to a switch in one network but capable of being connected to a switch in another network, while each of the other number series including non-portable telephone numbers assigned to a switch in one network and connected to that same switch in that same network.
- SCP service control point
- the SCP of the present invention comprises a calling name (CNAM) database (CNAM DB) for storing a plurality of telephone numbers and corresponding names of subscribers; means for receiving a CNAM query to the CNAM DB, the CNAM query containing the telephone number of a subscriber that has placed a call to another subscriber; means for providing the name of the calling subscriber if the telephone number of the calling subscriber is stored in the CNAM DB; means for sending a CNAM requery to a CNAM DB in another network if the telephone number of the calling subscriber is not stored in the CNAM DB, the CNAM requery containing the telephone number of the calling subscriber; means for receiving a gapping order in a response from the other network, the gapping order specifying the gapping of subsequent CNAM requeries containing telephone numbers belonging to the same number series as the telephone number of the calling subscriber; and means for responding to the gapping order from the other network (a) by gapping subsequent CNAM
- the present invention provides a method for managing calling name databases (CNAM DBs) in a plurality of telephone networks comprising a plurality of subscribers each having a telephone number in a predetermined number series associated with a particular switch in one of the telephone networks, with one or more of the number series being designated as a portable number series and including telephone numbers assigned to a switch in one network but capable of being connected to a switch in another network, while each of the other number series including nonportable telephone numbers assigned to a switch in one network and connected to that same switch in that same network, and with each of the networks including a CNAM DB for storing a plurality of telephone numbers and corresponding names of subscribers connected to the switch in that network.
- CNAM DBs calling name databases
- the method of the present invention comprises the steps of detecting a call from a calling subscriber in one of the networks to a called subscriber in another one of the networks; determining whether the telephone number of the calling subscriber is a portable number or a non-portable number; if the telephone number of the calling subscriber is a portable number, obtaining a location routing number (LRN) associated with the telephone number of the calling subscriber, the LRN being used to identify the switch and the network of the calling subscriber; if the telephone number of the calling subscriber is a non-portable number, using the telephone number of the calling subscriber to identify the switch and the network of the calling subscriber; sending from the network of the called subscriber to the CNAM DB in the network of the calling subscriber a CNAM query containing the telephone number of the calling subscriber; receiving at the network of the called subscriber in response to the CNAM query a gapping order from the network of the calling subscriber specifying the gapping of subsequent CNAM queries containing telephone numbers belonging to the same number series as
- FIG. 1 is a block diagram of three exemplary prior art networks each of which includes a service control point (SCP) for providing calling services;
- FIGs. 2A-B together show a flowchart of the steps executed by a SCP constructed in accordance with the present invention.
- FIG. 3 is an illustration of a call gapping table used by the SCP in FIG. 2.
- FIGs. 2A-B there is shown a flowchart of the steps executed by a SCP constructed in accordance with the present invention. These steps are executed in the manner shown whenever the SCP receives a CNAM query for a given call, as indicated at block 50 in FIG. 2A.
- the CNAM query may be received, for example, from an EO in the local network or from a SCP in a remote network.
- the SCP determines whether it or some other node is the originator of the received CNAM query by comparing the origination point code (OPC) in the CNAM query to its own OPC (as well known in the art, each node in the network is identified by a unique OPC which is included in all global title routed messages originating from that node).
- OPC origination point code
- each node in the network is identified by a unique OPC which is included in all global title routed messages originating from that node.
- This particular step is performed in order to prevent any possibility of an "endless loop" through the flowchart in FIGS. 2A-2B where this SCP itself is the originator of the CNAM query. In that case, the SCP will generate a "Return Error" message as shown at block 54.
- the SCP proceeds to block 56 and indexes the CNAM DB with the calling party number (CgPN) in the received CNAM query in an attempt to find the name of the calling party.
- CgPN calling party number
- the SCP determines whether the CgPN was found in the CNAM DB. If the CgPN was found in the CNAM DB, the SCP will generate a "Return Result" message containing the name of the calling party, as shown at block 60. However, if the CgPN was not found in the CNAM DB, thus implying that the calling party is connected to a switch in another network, the SCP next determines at step 62 whether the CNAM DB in the network of the calling party can be queried for purposes of obtaining the calling party name.
- This determination may be based, for example, on whether there is an agreement with the other network for the exchange of CNAM data, whether this SCP contains the functionality for formulating a CNAM requery, and other similar considerations. If the CNAM DB in the other network cannot be queried, the SCP will generate a "Return Error" message as shown at block 64. On the other hand, if the SCP determines that the CNAM DB in the other network should be queried, the SCP will next determine at step 66 whether the CgPN on which to query the other network belongs to a portable number series.
- the SCP at block 68 will fetch the location routing number (LRN) from the LNP DB, and will save that LRN (or its NPA-NXX portion) as the gapping number to which gapping will be applied, if necessary.
- LRN location routing number
- the SCP proceeds to block 70 and saves the CgPN as the gapping number.
- the SCP next determines at block 72 whether call gapping should be performed for this call (i.e., this CNAM query). For this purpose the SCP will consult a call gapping table 110 as shown in FIG. 3.
- the call gapping table 110 stores a list of gapping numbers (CgPNs and/or LRNs) and associated values for the gap interval timer.
- a gapping number becomes listed in the gapping table 110 whenever the SCP receives an automatic call gapping (ACG) order in a response to a CNAM query involving the CgPN corresponding to that gapping number. At that time, the SCP will set the gap duration and gap interval timers to the values indicated in the ACG data.
- the SCP will apply call gapping to this call if the gapping number for this call (as determined at blocks 66-70) is present in the gapping table 110 and the associated gap interval timer has not expired. If both of these conditions are met, the SCP at block 74 will create a "Return Error" message since it cannot at this time send a CNAM requery to the other network.
- the SCP proceeds to step 76 in FIG. 2B and determines whether the gap interval timer for any gapping number stored in the gapping table 110 should be started. This step basically resolves to a determination of whether the gapping number for this call (as determined at blocks 66-70) is present in the gapping table 110. If so, the gap interval timer for this gapping number will be started, as shown at block 78, since the SCP will now be sending out a CNAM requery for the CgPN corresponding to this gapping number, the CNAM requery being Global Title routed to the CNAM DB in the other network as shown at block 80.
- the SCP awaits the receipt of a response message from the other network.
- the response message received by the SCP from the other network could be a "Reject” message, a "Return Error” message or a "Return Result” message, respectively.
- the "Reject” message will be sent by the other network if, for example, there was a transmission error or certain types of formatting errors in the CNAM requery sent by the SCP.
- the "Return Error” message will be sent by the other network if, for example, it was unable to locate the CgPN in its CNAM DB or if the CNAM DB was unavailable.
- the "Return Result" message will be sent by the other network if it was successful in locating the CgPN in its CNAM DB.
- the SCP at block 90 determines whether an ACG parameter was included in the CNAM response message. If an ACG parameter is detected in the CNAM response message, the SCP at block 92 will insert, delete or leave the gapping number for this call in the gapping table 110 as specified in the received ACG data. Otherwise, the SCP will proceed directly to block 94 and determine the type of the CNAM response message received from the other network so as to generate the proper response to the originator of the CNAM query.
- the SCP will generate a corresponding "Return Result" message (containing the calling party name) as shown at block 96. However, if the CNAM response message received from the other network is of another message type (i.e., "Reject” or "Return Error” message), the SCP will generate a "Return Error” message as shown at block 98. In either case, the SCP will proceed to block 100 in order to determine whether to include ACG data in its response message to the originator of the CNAM query (note that block 100 in FIG. 2B may also be reached from block 54, 60, 64 or 74 in FIG. 2A).
- the SCP checks whether it is in overload condition and whether the originator of the CNAM query is currently performing call gapping (pursuant to previously sent instructions from the SCP). If either of these two conditions is true, the SCP at block 102 will include appropriate ACG data in the response message to the originator of the CNAM query so as to initiate or update call gapping at that node. The response message, with or without ACG data as applicable, is sent to the originator of the CNAM query at block 104.
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE69838788T DE69838788T2 (en) | 1997-08-18 | 1998-08-14 | CALLER IDENTIFICATION MANAGEMENT SYSTEM IN TELEPHONE NETWORKS WITH TELEPHONE NUMBER TRANSFERABILITY |
CA002297782A CA2297782A1 (en) | 1997-08-18 | 1998-08-14 | Management of calling name delivery in telephone networks providing for telephone number portability |
EP98940905A EP1005758B1 (en) | 1997-08-18 | 1998-08-14 | Management of calling name delivery in telephone networks providing for telephone number portability |
JP2000510290A JP2001516189A (en) | 1997-08-18 | 1998-08-14 | Managing call name forwarding in telephone networks with telephone number portability |
BR9811309-7A BR9811309A (en) | 1997-08-18 | 1998-08-14 | Service control point in one of the networks of a plurality of telephone networks and method for managing databases of a plurality of telephone networks |
KR1020007001341A KR20010022744A (en) | 1997-08-18 | 1998-08-14 | Management of calling name delivery in telephone networks providing for telephone number portability |
AU89077/98A AU752646B2 (en) | 1997-08-18 | 1998-08-14 | Management of calling name delivery in telephone networks providing for telephone number portability |
NO20000785A NO20000785L (en) | 1997-08-18 | 2000-02-17 | Handling of call name delivery in telephone network delivery for telephone number portability |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US08/914,670 | 1997-08-18 | ||
US08/914,670 US5949865A (en) | 1997-08-18 | 1997-08-18 | Management of calling name delivery in telephone networks providing for telephone number portability |
Publications (1)
Publication Number | Publication Date |
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WO1999009759A1 true WO1999009759A1 (en) | 1999-02-25 |
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Application Number | Title | Priority Date | Filing Date |
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PCT/US1998/016936 WO1999009759A1 (en) | 1997-08-18 | 1998-08-14 | Management of calling name delivery in telephone networks providing for telephone number portability |
Country Status (11)
Country | Link |
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US (1) | US5949865A (en) |
EP (1) | EP1005758B1 (en) |
JP (1) | JP2001516189A (en) |
KR (1) | KR20010022744A (en) |
CN (1) | CN1108707C (en) |
AU (1) | AU752646B2 (en) |
BR (1) | BR9811309A (en) |
CA (1) | CA2297782A1 (en) |
DE (1) | DE69838788T2 (en) |
NO (1) | NO20000785L (en) |
WO (1) | WO1999009759A1 (en) |
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US6954526B1 (en) | 1999-04-05 | 2005-10-11 | Tekelec | Methods and systems for routing calling name service query messages in a communication network |
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US9088478B2 (en) | 2010-02-12 | 2015-07-21 | Tekelec, Inc. | Methods, systems, and computer readable media for inter-message processor status sharing |
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Also Published As
Publication number | Publication date |
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AU752646B2 (en) | 2002-09-26 |
CA2297782A1 (en) | 1999-02-25 |
KR20010022744A (en) | 2001-03-26 |
NO20000785D0 (en) | 2000-02-17 |
EP1005758B1 (en) | 2007-11-28 |
CN1108707C (en) | 2003-05-14 |
DE69838788T2 (en) | 2008-10-30 |
BR9811309A (en) | 2000-08-29 |
AU8907798A (en) | 1999-03-08 |
CN1267429A (en) | 2000-09-20 |
EP1005758A1 (en) | 2000-06-07 |
US5949865A (en) | 1999-09-07 |
JP2001516189A (en) | 2001-09-25 |
NO20000785L (en) | 2000-02-17 |
DE69838788D1 (en) | 2008-01-10 |
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