CN105338206B - Gateways for network telephone call and its method for handling urgency traffic - Google Patents
Gateways for network telephone call and its method for handling urgency traffic Download PDFInfo
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- CN105338206B CN105338206B CN201410231867.8A CN201410231867A CN105338206B CN 105338206 B CN105338206 B CN 105338206B CN 201410231867 A CN201410231867 A CN 201410231867A CN 105338206 B CN105338206 B CN 105338206B
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Abstract
A kind of gateways for network telephone call, gateways for network telephone call include judgment module, handover module.Judgment module receives user and needs the telephone number dialing or answer, and judges whether telephone number is emergency number in emergency call list.Handover module is when telephone number is emergency number, when speech path network is IP network, speech path network is switched into Public Switched Telephone Network, and urgency traffic is realized by Public Switched Telephone Network, the duration of connection is kept after recording urgency traffic with Public Switched Telephone Network, and speech path network is switched into IP network after duration is more than preset time period.Gateways for network telephone call provided by the invention and its method for handling urgency traffic, it is avoided that because detecting occurs less than situations such as public exchange network clawback incoming call or unsuccessful gateways for network telephone call switching Public Switched Telephone Network, ensures Public Switched Telephone Network clawback networking telephone energy normal ON.
Description
Technical field
The present invention relates to network telephony art more particularly to gateways for network telephone call and its methods for handling urgency traffic.
Background technology
Currently, the general networking telephone (Voice Over Internet Protocol, VoIP) placement of emergency calls
Method is that call is switched to public friendship by gateways for network telephone call in Internet protocol (Internet Protocol, IP) network
Change telephone network (Public Swi tched Telephone Network, PSTN), the later gateways for network telephone call of end of conversation
The IP network of acquiescence is switched back to again.If emergency telephone services center clawback, gateways for network telephone call need to switch back to PSTN to connect
It listens.Some risks can be caused by doing so, for example detect the ring less than PSTN, gateways for network telephone call would not switchback to PSTN,
It will ultimately result in emergency call and connect obstructed serious consequence.
This case devises a kind of new technology, and after user has dialed emergency call, VoIP gateway can be always maintained at
When is when service centre's clawback for a period of time by PSTN, there is no need to switch back to PSTN from VOIP again, the wind of error is reduced
Danger.
Invention content
In view of this, a kind of gateways for network telephone call need to be provided, it is ensured that urgency traffic process is unimpeded, it is ensured that the networking telephone is used
Family can receive the phone of emergency telephone services center clawback.
In addition, also needing to provide a kind of method of gateways for network telephone call processing urgency traffic, it is ensured that urgency traffic
Cheng Changtong, it is ensured that iphone user can receive the phone of emergency telephone services center clawback.
Gateways for network telephone call in embodiment of the present invention, for making the networking telephone realize call and the public affairs of IP network
The call at exchanging telephone network altogether, the gateways for network telephone call includes judgment module and handover module.Judgment module is used
The telephone number dialed or answered is needed in receiving user, and judges whether the telephone number is tight in emergency call list
Anxious telephone number.Handover module is used for when the telephone number is emergency number and speech path network is the IP network,
Speech path network is switched into the Public Switched Telephone Network, and urgency traffic is realized by the Public Switched Telephone Network,
The duration of connection is kept after recording the urgency traffic with the Public Switched Telephone Network, and is more than pre- in the duration
If speech path network is switched to the IP network after the period.
Preferably, the judgment module is additionally operable to receive the logical of the update emergency call list of network telephone service quotient offer
Know, and the emergency call list is updated.
Preferably, the emergency call list includes leading to after emergency number, number length, the urgency traffic
Telephone network is maintained at the preset time period of the Public Switched Telephone Network.
Preferably, the handover module is additionally operable to receiving from described in the Public Switched Telephone Network clawback promptly leading to
When the phone of words, compares the duration and reach the time point of the preset time period and the end of conversation time to call back
Point, and when the duration reaches the time point of the preset time period before the end of conversation time point to call back
When, speech path network is switched into the IP network after the end of conversation time point to call back.
Preferably, the handover module is additionally operable to reach the time point of the preset time period at described time when the duration
It is described more than speech path network is switched to after preset time period in the duration when after the end of conversation time point dialed
IP network.
The method that embodiment of the present invention provides gateways for network telephone call processing urgency traffic, for making the networking telephone realize IP
The call of network and the call on public switch telephone network road, the method includes receiving user to need to dial or answer
Telephone number, and judge whether the telephone number is emergency number in emergency call list, in the phone number
When code is emergency number and speech path network is the IP network, speech path network is switched into the public switch telephone network
Network, and urgency traffic is realized by the Public Switched Telephone Network, record after the urgency traffic with the public friendship
The duration that telephone network keeps connection is changed, and speech path network is switched into the IP network after the duration is more than preset time period
Network.
Preferably, the method further includes receiving the notice for the update emergency call list that network telephone service quotient provides,
And the emergency call list is updated.
Preferably, the method further include the emergency call list include emergency number, it is number length, described
Speech path network is maintained at the preset time period of the Public Switched Telephone Network after urgency traffic.
Preferably, the method further includes receiving from urgency traffic described in the Public Switched Telephone Network clawback
When phone, compares the duration and reaches the time point of the preset time period and the end of conversation time point to call back,
And when the duration reaches the time point of the preset time period before the end of conversation time point to call back,
Speech path network is switched into the IP network after the end of conversation time point to call back.
Preferably, the method further includes when the duration reaches the time point of the preset time period in clawback electricity
When after the end of conversation time point of words, speech path network is switched into the IP network after the duration is more than preset time period
Network.
The method of gateways for network telephone call and its processing urgency traffic in embodiment of the present invention, passes through and urgency traffic is arranged
Afterwards gateways for network telephone call persistently keep with the connection status of Public Switched Telephone Network for a period of time, can directly pass through the networking telephone
Gateway is connect with the networking telephone, is avoided because detecting is public less than public exchange network clawback incoming call or gateways for network telephone call switching
The appearance for situations such as switched telephone network is unsuccessful altogether, can ensure that the urgency traffic of the Public Switched Telephone Network clawback networking telephone
It is normally carried out.
Description of the drawings
Fig. 1 is the applied environment figure of one embodiment of inventive network telephony gateway.
Fig. 2 is the functional block diagram of one embodiment of inventive network telephony gateway.
Fig. 3 is the flow graph journey that one embodiment of inventive network telephony gateway updates emergency call list.
Fig. 4 is the functional block diagram of another embodiment of inventive network telephony gateway.
Fig. 5 is the flow graph journey for one embodiment of method that inventive network telephony gateway handles urgency traffic.
Fig. 6 is one embodiment network switching schematic diagram of inventive network telephony gateway.
Fig. 7 is another embodiment network switching schematic diagram of inventive network telephony gateway.
Main element symbol description
The networking telephone 10
Gateways for network telephone call 20
IP network 30
Public Switched Telephone Network 40
Modem 50
Judgment module 200
Handover module 202
Memory 204
Processor 206
Specific implementation mode
Refering to fig. 1, it show the applied environment figure of 20 1 embodiment of inventive network telephony gateway.In present embodiment
In, the networking telephone 10 is connected with the gateways for network telephone call 20 in IP network 30, when the networking telephone (Voice Over Internet,
VoIP) 10 dial be plain old telephone when, the networking telephone 10 compresses encoded speech data by the compression algorithm of voice
Processing, is then packaged these voice data by TCP/IP standards, and data packet is sent to receiving by IP network 30, then
These VoPs are stringed together, after decompression processing, original voice signal is reverted to, is passed by internet to reach
The purpose of sending voice.In this process, the core of the networking telephone and key equipment gateways for network telephone call 20, it is each department electricity
Words area code is mapped as the IP address of corresponding regional network telephony gateway, and is stored in a database, and network is dialled in user
When phone, gateways for network telephone call determines the IP address of corresponding network telephony gateway according to telephone number, and this IP address is added
In IP data packets, IP data packets are forwarded to purpose telephone number interface end through gateways for network telephone call 20.
Transmitted in the form of digital signal due to the data of IP network 30, the data of Public Switched Telephone Network 40 be with
The form transmission of analog signal, so that the signal of two networks is mutually transferred, need to carry out by modem 50
The conversion of digital signal and analog signal.When the networking telephone 10 dial be emergency call when, gateways for network telephone call 20 will converse
To Public Switched Telephone Network 40, the data packet of form of data signals will be transmitted to public network switching by modem 50
The networking telephone 10 is attached by switched telephone network 40 with the corresponding emergency number dialed, and starts the logical of emergency call
Words.
Referring to Fig.2, showing the functional block diagram of gateways for network telephone call 20 shown in FIG. 1.In the present embodiment, network
Telephony gateway 20 is applied in application environment shown in FIG. 1, and gateways for network telephone call 20 includes judgment module 200 and handover module
202。
In the present embodiment, when the judgment module 200 of gateways for network telephone call 20 receives the electricity that the networking telephone 10 is dialed
After words, judgment module 200 judges whether the number dialed is emergency number, such as the numbers such as 110,119,120 are tight
Anxious telephone number, emergency number are provided more new version by network telephone service provider to gateways for network telephone call 20 in time,
Specific renewal process is refering to Fig. 3.
If judgment module 200 judge the number dialed as plain old telephone when, which is dialled by using IP network 30
It beats to number reception end.If judgment module 200 judge the number dialed as urgency traffic when, handover module 202 is by the call
Network switching realizes urgency traffic to Public Switched Telephone Network 40, by Public Switched Telephone Network 40, records urgency traffic
After gateways for network telephone call 20 and Public Switched Telephone Network 40 keep the duration of connection, and be more than preset time period in duration
Speech path network is switched into the IP network afterwards.
For example, it illustrates (110,3,185) refering to table 1, after user and 110 end of conversation of emergency call, network electricity
Words 10 are still within connection status by gateways for network telephone call 20 and modem 50 with Public Switched Telephone Network 40, and
And this period is set as 185 seconds.
Handover module 202 compares urgent when receiving from the phone of the urgency traffic of Public Switched Telephone Network clawback
After end of conversation gateways for network telephone call 20 and Public Switched Telephone Network 40 keep the duration of connection reach preset time period when
Between end of conversation time point for putting and calling back, and when the time point that the duration reaches preset time period is logical what is called back
When before words end time point, speech path network is switched into the IP network after the end of conversation time point to call back
Network.Handover module 202 reaches time point of preset time period when after the end of conversation time point to call back when the duration,
Speech path network is switched into the IP network after the duration is more than preset time period.
It illustrates for (110,3,185), in this 185 seconds, is in and public friendship when there is other networking telephones to dial this
When changing the networking telephone of telephone network connection status, gateways for network telephone call 20 can provide the just busy prompt tone of the user.When at this
In 185 seconds, Public Switched Telephone Network 40 is without the clawback networking telephone 10 or the networking telephone 10 also without placement of emergency calls
When, after keeping the networking telephone 10 and Public Switched Telephone Network to be in connection status 185 seconds, handover module 202 is by net of conversing
Network is switched to IP network 30 from Public Switched Telephone Network 40.In this 185 seconds, when emergency telephone services platform clawback network electricity
When talking about 10, modem 50 and 20 connected network phone 10 of gateways for network telephone call can be directly over.If starting in this 185 seconds
Urgency traffic, and converse when continueing to apart from 185 seconds of urgency traffic end time last time, gateways for network telephone call 20 is still
It can ensure that urgency traffic process is normally carried out, after urgency traffic, the handover module 202 of gateways for network telephone call 20 just can
Speech path network is switched back into IP network 30 from Public Switched Telephone Network 40.
It show the flow graph that one embodiment of inventive network telephony gateway updates emergency call list refering to Fig. 3, Fig. 3
Journey.In step S300, gateways for network telephone call 20 receives the newer emergency call list that network telephone service provider sends.
Include emergency number in the list, the networking telephone after the digit and emergency call end of conversation of emergency number
10 persistently keep the time interval being connect with Public Switched Telephone Network.For example, emergency call list is as shown in table 1：
| Number | Digit | Time/s |
| 110 | 3 | 185 |
| 119 | 3 | 360 |
Table 1
(110,3,185) it indicates after the networking telephone 10 dials 110 this 3 numbers, gateways for network telephone call 20 can be in net
After network phone 10 and 110 emergency telephone services platform end of conversations, when no placement of emergency calls again, by network after 185 seconds
The speech path network of phone 10 is switched to IP network 30 from Public Switched Telephone Network 40, when 40 clawback net of Public Switched Telephone Network
When network phone 10, it is ensured that call is normally carried out, and after end of conversation, judges that the time terminated at this time apart from last time urgency traffic is
It is no to reach 185 seconds, the speech path network of the networking telephone 10 is switched to IP network 30 from Public Switched Telephone Network 40 if reaching,
If do not reached, 185 seconds ability of arrival is waited for switch the speech path network of the networking telephone 10 from Public Switched Telephone Network 40
To IP network 30.Similarly (119,3,360) indicate to carry out urgency traffic after the networking telephone 10 dials 119 this 3 numbers, urgent logical
Time after words with Public Switched Telephone Network holding connection is 360 seconds, that is, 110 are substituted for 119,185 seconds and is replaced
It changes into 360 seconds.
It should be pointed out that update emergency call list can be increased new emergency number or delete no tight
Anxious telephone number can also be the change for the period that original emergency call is arranged, as long as to emergency call list
Modification belongs to the range to emergency call list update.
In step s 302, judgment module 200 according to the emergency call list of reception to original emergency call list into
Row update.
Refering to Fig. 4, it is shown the functional block diagram of 20 another embodiment of inventive network telephony gateway, in this embodiment party
In formula, judgment module 200, handover module 202, memory 204 and processor 206.Judgment module 200, handover module 202
Function is identical as Fig. 2, and this will not be repeated here.Memory 204 includes software code, for realizing judgment module 200, switching mould
Block 202, function.Processor 206 is for executing software code to realize the function of above-mentioned module.
It show the flow graph that inventive network telephony gateway handles one embodiment of method of urgency traffic refering to Fig. 5, Fig. 5
Journey.In the present embodiment, gateways for network telephone call 20 is applied in application environment shown in FIG. 1, and gateways for network telephone call 20 is Fig. 2
Shown in function module, including judgment module 200 and handover module 202.
In step S500, gateways for network telephone call 20 receives the networking telephone that the networking telephone 10 is dialed.
In step S502, judgment module 200 judges whether the call is emergency call, and be connected to by comparing needs
It is identical whether number has with the number in emergency call list.
When judging that it is not emergency numbers to need the number being connected to, in step S504, handover module 202 is without net
Network switches, and is directly conversed with the number using 30 connected network phone 10 of IP network.
When judging that it is emergency numbers to need the number being connected to, in step S506, handover module 202 carries out network and cuts
It changes, Public Switched Telephone Network 40 is switched to by modem 50, it will be between the networking telephone 10 and the emergency numbers dialed
Establish call.
In step S508, after urgency traffic, gateways for network telephone call 20 disconnects the connection with the emergency call.
In step S510, talk line is maintained at Public Switched Telephone Network for a period of time by gateways for network telephone call 20.
This time was determined according to the period that each emergency call is correspondingly arranged in emergency call list, according to table 1 illustrate come
It says, after 110 emergency numbers end of conversations, it is 185 seconds to be kept for the time being connected to Public Switched Telephone Network, urgent with 119
After number end of conversation, it is 360 seconds to be kept for the time being connected to Public Switched Telephone Network.At 185 seconds of this preset time or
In 360 seconds, when there is other networking telephones to dial in the networking telephone with Public Switched Telephone Network connection status, network
Telephony gateway 20 can provide the just busy prompt tone of the user.
In step S512, speech path network is switched to IP network 30 by handover module 202 from Public Switched Telephone Network 40.
In step S510 keep the networking telephone 10 be connected to Public Switched Telephone Network 40 this may go out for a period of time
Existing a variety of situations, refering to Fig. 6 and Fig. 7, citing illustrates two kinds of situations of appearance.
It show one embodiment network switching schematic diagram of inventive network telephony gateway refering to Fig. 6, Fig. 6.The networking telephone
Gateway 20 is in urgency traffic state after being connected to Public Switched Telephone Network 40, and after end of conversation, gateways for network telephone call 20 is protected
It holds the networking telephone 10 and is in connection status for a period of time with Public Switched Telephone Network, citing as shown in table 1 can be call knot
It is persistently kept after beam 185 seconds, in this 185 seconds, Public Switched Telephone Network 40 does not have the clawback networking telephone 10 or network
When phone 10 does not have placement of emergency calls yet, connection status 185 is in Public Switched Telephone Network when keeping the networking telephone 10
After second, in step S512, speech path network is switched to IP network 30 by handover module 202 from Public Switched Telephone Network 40.
It show another embodiment network switching schematic diagram of inventive network telephony gateway refering to Fig. 7, Fig. 7.Network electricity
Phone network close 20 be connected to Public Switched Telephone Network 40 after in urgency traffic state, after end of conversation, gateways for network telephone call 20
The networking telephone 10 is kept to be in connection status for a period of time with Public Switched Telephone Network, citing as shown in table 1 can be call
After persistently keep 185 seconds, in this 185 seconds, when the 40 clawback networking telephone 10 of Public Switched Telephone Network, public exchange
Telephone network 40 directly establishes connection by gateways for network telephone call 20 with the networking telephone 10, without carrying out network switching.Work as call
After, in step S512, handover module 202 judge time that the last urgency traffic of distance at this time terminates whether be more than
185 seconds, if being more than 185 seconds, speech path network is switched into IP network 30.If judge at this time apart from last time urgency traffic when
Between be less than 185 seconds, then speech path network is continuously maintained in Public Switched Telephone Network 40, until the time when reaching 185 seconds, cuts
Speech path network is switched to IP network 30 by mold changing block 202 from Public Switched Telephone Network 40.
The method of gateways for network telephone call and its processing urgency traffic in embodiment of the present invention, passes through and urgency traffic is arranged
Afterwards gateways for network telephone call persistently keep with the connection status of Public Switched Telephone Network for a period of time, when urgency traffic information desk return
It when dialling the networking telephone, can directly be connect, be avoided because detecting is less than PSN Public Switching Network with the networking telephone by gateways for network telephone call
The appearance for situations such as network clawback is sent a telegram here or gateways for network telephone call switching Public Switched Telephone Network is unsuccessful, can ensure that public friendship
The urgency traffic for changing the telephone network clawback networking telephone is normally carried out.
Claims (10)
1. a kind of gateways for network telephone call, for making the networking telephone realize call and the public switch telephone network road of IP network
Call, which is characterized in that the gateways for network telephone call includes：
Judgment module needs the telephone number dialed or answered for receiving user, and judges whether the telephone number is tight
Emergency number in anxious phone list；And
Handover module will lead to for being emergency number and when speech path network is the IP network in the telephone number
Telephone network switches to the Public Switched Telephone Network, and realizes urgency traffic, record by the Public Switched Telephone Network
The duration of connection is kept after the urgency traffic with the Public Switched Telephone Network, and when the duration is more than default
Between speech path network is switched into the IP network after section.
2. gateways for network telephone call as described in claim 1, which is characterized in that the judgment module is additionally operable to receive the networking telephone
The notice for the update emergency call list that service provider provides, and the emergency call list is updated.
3. gateways for network telephone call as described in claim 1, which is characterized in that the emergency call list includes emergency call number
Speech path network is maintained at the preset time period of the Public Switched Telephone Network after code, number length, the urgency traffic.
4. gateways for network telephone call as claimed in claim 3, which is characterized in that the handover module is additionally operable to receiving from institute
When stating the phone of urgency traffic described in Public Switched Telephone Network clawback, compare the duration reach the preset time period when
Between end of conversation time point for putting and calling back, and when the duration reaches the time point of the preset time period at described time
When before the end of conversation time point dialed, speech path network is switched after the end of conversation time point to call back
To the IP network.
5. gateways for network telephone call as claimed in claim 4, which is characterized in that the handover module is additionally operable to be up to when described
To the preset time period time point when after the end of conversation time point to call back, be more than pre- in the duration
If speech path network is switched to the IP network after the period.
6. a kind of method of gateways for network telephone call processing urgency traffic, for make the networking telephone realize IP network call and
The call on public switch telephone network road, which is characterized in that the method includes：
It receives user and needs the telephone number dialed or answered, and judge whether the telephone number is in emergency call list
Emergency number；And
When the telephone number is emergency number and speech path network is the IP network, speech path network is switched to described
Public Switched Telephone Network, and urgency traffic is realized by the Public Switched Telephone Network, it records the urgency traffic and terminates
The duration of connection is kept with the Public Switched Telephone Network afterwards, and by speech path network after the duration is more than preset time period
Switch to the IP network.
7. method as claimed in claim 6, which is characterized in that the method further includes receiving network telephone service quotient to provide
The notice of emergency call list is updated, and the emergency call list is updated.
8. method as claimed in claim 6, which is characterized in that it includes tight that the method, which further includes in the emergency call list,
Speech path network is maintained at the pre- of the Public Switched Telephone Network after anxious telephone number, number length, the urgency traffic
If the period.
9. method as claimed in claim 8, which is characterized in that the method further includes：It is receiving from the public exchange
Described in telephone network clawback when the phone of urgency traffic, time point and clawback that the duration reaches the preset time period are compared
The end of conversation time point of phone, and when the duration reach time point of the preset time period it is described call back it is logical
When before words end time point, speech path network is switched into the IP network after the end of conversation time point to call back
Network.
10. method as claimed in claim 9, which is characterized in that the method further includes：When the duration reaches described default
The time point of period when after the end of conversation time point to call back, the duration be more than preset time period it
Speech path network is switched into the IP network afterwards.
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| CN201410231867.8A CN105338206B (en) | 2014-05-29 | 2014-05-29 | Gateways for network telephone call and its method for handling urgency traffic |
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| CN105338206B true CN105338206B (en) | 2018-09-28 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106302126A (en) * | 2016-08-22 | 2017-01-04 | 武汉旭力盛科技有限公司 | A kind of network instant communication system |
| JP6820475B2 (en) * | 2017-02-08 | 2021-01-27 | アイコム株式会社 | Voice communication systems, terminal equipment, and programs |
| CN110232797A (en) * | 2019-05-08 | 2019-09-13 | 广东昇辉电子控股有限公司 | A kind of flash appeal button circuit and security protection help system |
| CN114449592B (en) * | 2020-10-30 | 2024-06-07 | 展讯半导体(成都)有限公司 | Communication method, device, equipment and storage medium |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571464A (en) * | 2003-07-17 | 2005-01-26 | 联想(北京)有限公司 | A seamless communication method for IP telephone and telephone network |
| CN101127794A (en) * | 2006-08-14 | 2008-02-20 | 英保达股份有限公司 | System and method for automatic dialing mode transformation |
| CN101640732A (en) * | 2008-07-31 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Network device and method for re-dialing telephone thereof |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3862056B2 (en) * | 2001-08-06 | 2006-12-27 | 三菱電機株式会社 | Telephone device adapter |
| JP2004165818A (en) * | 2002-11-11 | 2004-06-10 | Matsushita Electric Ind Co Ltd | Voip adaptor |
-
2014
- 2014-05-29 CN CN201410231867.8A patent/CN105338206B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1571464A (en) * | 2003-07-17 | 2005-01-26 | 联想(北京)有限公司 | A seamless communication method for IP telephone and telephone network |
| CN101127794A (en) * | 2006-08-14 | 2008-02-20 | 英保达股份有限公司 | System and method for automatic dialing mode transformation |
| CN101640732A (en) * | 2008-07-31 | 2010-02-03 | 鸿富锦精密工业（深圳）有限公司 | Network device and method for re-dialing telephone thereof |
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Effective date of registration: 20180224 Address after: 201613 Shanghai city south of Songjiang Export Processing Zone Road No. 1925 Applicant after: Ambit Microsystems (Shanghai) Co., Ltd. Address before: 201613 Shanghai City, Songjiang District Songjiang Export Processing Zone South Road No. 1925 Applicant before: Ambit Microsystems (Shanghai) Co., Ltd. Applicant before: Hon Hai Precision Industry Co., Ltd. |
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