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Which message does incoming call display come from?Is a tup/ISUP message or a map message?Please explain in detail ??
Lixing1
Absrtact: This paper introduces the necessity of changing the tup of CC08 switch No.7 signaling in Tianjin local telephone network to IsUp, and the scheme and arrangement of the transformation.
Keywords: local telephone network; No.7 signaling; Telephone user section; Integrated Business section
1 The necessity of changing the signaling and the problems that should be paid attention to
At present, the No.7 of the local telephone network in Tianjin
Document directory
Jain proposal
SIP, ISUP, call control system, and Jain Interface
Application of Jain APIs to Mobile Networks
Mobile Station
No-wire access to network (RAN)
Network and Enterprise
Internal capacity and service
End-to-end structure
Jain API for call control and Wireless Networks
Face-to-Face Jain API of the integrated network connects the business agility, network convergence, and security network to the telephone and
Comparison between H.323 and SIP
Currently, 3GPP uses SIP as the core protocol of the third-generation mobile communication network. The NetMeeting protocol in Windows XP is also changed from H.323 to the SIP protocol. Considering its business flexibility, the SIP protocol will become the future development direction.
Comparison Between SIP and BICC
BICC is directly oriented to telephone applications. It comes from the traditional telecom camp and has a more rigorous system architecture, therefo
basis of ISUP. It is mature in terms of voice service support and can support all previously narrowband voice services, supplementary services and data services. However, the BICC Softswitch protocol is complex, poor scalability. In wireless 3G applications, the BICC Softswitch protocol is in the Nc Interface of the core network of the 3GPPR4 circuit domain, and supports call connection between (G) mscservers.
In a fixed network Softswitch applicatio
Reference: http://www.cnblogs.com/greatverve/archive/2012/03/27/listbox-add-remove-up-down.html
It seems that codeproject has a very powerful similar control, and there is no need to use a custom control here.Moving left and right is a simple option to add and delete items. Advanced syntax is used for moving up and down, which is worth learning.UsingSystem;UsingSystem. Collections. Generic;UsingSystem. LINQ;UsingSystem. text;
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milliseconds, and the brightness value (outer circle radius) is between 10 and 30. In this way, the light is dark, and then the light is dark. Interesting :)
[Javascript]Bubble. prototype. play = function () {var me = this; var isUp = true; game. play ("light _" + this. x + "_" + this. y, function () {if (isUp) {me. light ++;} if (! IsUp) {me. light --;} if (me.
Recently, chan_ss7 was used in the project to access China's no. 7 signaling. Due to some problems encountered during the access process, the source code needs to be analyzed to solve the problems encountered. The following describes the logic analysis of chan_ss7.Similar to the osi7 layer model, SS7 is organized by layer. The bottom-to-top models are mtp1, mtp2, mtp3, ISUP, Tup, and SCCP. The MTP layer ensures reliable end-to-end transmission of user
application of SS7 in VoIP applications. The overall framework for IETF-Based IP network transmission signaling 7 is described in rfc2719. Sctp is mainly used to transmit ISUP messages between the signaling gateway (SG) and the Media Gateway controller (MGC. SG is the gateway between the SS7 network and the IP network. It processes all MTP-related tasks, but does not include SS7 users. This user part (typically I
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BICC vs sip-Comparison of NGN Protocol
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One notable feature of the Next Generation Network Based on Softswitch is the separation of Call Control and bearer control. In terms of call and control of communication, from the Standard Research of the International Telecommunication Union (ITU-T) and Internet Engineering Task Group (IETF), there are two protocols that deserve attention, that is BICC (bearing independent
CIC: Circuit identification code
CIC is the circuit identification code (circuit identification code). The lowest five bits of CIC indicate the actual time slot number allocated to the phone, and the other seven bits represent the PCM System Identification Code of the origin and destination.
In ISUP or Tup messages, the length of CIC encoding is fixed to 12 bits. Therefore, when both exchange bureaus adopt the single signaling point encoding, A si
1: SIGTRAN Introduction The SIGTRAN protocol is a set of transmission control protocols established by SIGTRAN, the IETF's signaling Transfer Working Group, to transmit PSTN signaling over an IP network. SIGTRAN defines a complete SIGTRAN protocol stack, which consists of four layers: IP protocol, signaling transmission, signaling transmission adaptation, and signaling application. Each layer contains the following content: · IP protocol layer: IP · signaling transport layer: SCTP · signaling tr
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The Code indicates that the brightness of a light is re-painted at an interval of 50 milliseconds, and the brightness value (outer circle radius) is between 10 and 30. In this way, the light is dark, and then the light is dark. Interesting :)
Bubble. prototype. play = function () {var me = This; var ISUP = true; game. play ("Light _" + this. X + "_" + this. y, function () {If (ISUP) {me. light ++;} If
) Obtain the detection status of the host service.Typical commands:1) Nmap2) Ncat (known as Swiss Army Knife)1) Nmap Command Use introduction:Nmap Default scan port range (0-1024, and common service port)Nmap-p 0-300001) ICMP protocol type (-p) Ping scan simple, fast and efficient for scanning host survival2) TCP syn type (-SS) semi-open connection 1. Efficient, 2. Not easy to detect, 3. General3) TCP Connect type (-ST) fully open connection 1. Simulate real user requests, 2 results are reliable
I have given a note in the source code, there are some deficiencies or can improve the place, I hope you can leave a message to explore ...
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