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IPV6 and VoIP Overview

"IPv6 configured Commands" IPv6 Install/Installation IPv6, limited to XP system use IPv6 unicast-routing/Enable IPv6 forwarding, configuring on the router Show IPv6 router/view IPv6 routing Table IPv6 router RIP test/enable RIP protocol, named

VoIP vos soft switching, vos database backup recovery

To the same version to import backup VOS2009 data interrupts the current call login ssh. Terminating vos service/etc/init.d/mbx2009d Stop/etc/init.d/vos2009dall stop/etc/init.d/mysql STOPCD/VAR/LIB/MYSQLCP-DPRF Vosdb/root/vosdbdate/etc/init.d/mysql

SIP traversal NAT SIP Traversal Firewall

, as the midcom protocol matures and develops, it is expected to gain more and more application prospects. The use of midcom requires upgrading existing equipment. STUN (Simple Traversalof UDP Through Network) IETF RFC 3489 defines how to determine the public address and port assigned by NAT and does not need to transform an existing NAT. Main Features: ?? Enables the client to discover the existence and type of NAT; ?? Enables the client to discover the binding life cycle of NAT; ?? Can work in

End-to-end QoS policy for WiMAX network

application gateway, through the Internet interconnection. In the WiMAX architecture, IMS is located in CSN to differentiate it from the wireless access ASN. application Example Analysis After the solution is connected with the IMS, the SIP client software is installed in the WiMAX terminal, which can provide various kinds of business that can be realized in the IMS network, such as IP Phone (VoIP), rendering and instant message, Video conferencing

To deploy Unified Communication, you must fully consider system security.

consider when deploying a Unified Communication System? First, SIP relay. The SIP relay "creates" another channel for external attacks to the enterprise's telephone system. In most VoIP architectures, the PSTN serves as a fireproof channel between the enterprise telephone system and the outside world. Logically, the more isolated the VoIP system is from the outside, the security risks and attacks it faces

Speech Codec (g.711, g.723, g.726, g.729, ilbc)

Various codec codes have been widely used in various fields. Next we will compare the compression ratios of various codec codes. If they are incorrect, we hope you can correct them. Speech Codec: Current major speech codec include g.711, g.723, g.726, g.729, ilbc Qcelp, EVRC, Amr, SMV Major audio codec include:Real Audio, AAC, AC3, MP3, WMA, SBC, etc. Various encodings have their key fields. This article summarizes the speech codec-related indica

Conversion between fullwidth and halfwidth

Char Sbc_high =- 93 ; // The first byte of the fullwidth character is A3. Const Char Sbc_space =- 95 ; // The full-width space is a1a1. // Fullwidth to halfwidth String Sbc2dbc ( Const String SBC ){ String DBC = "" ; Int Len = SBC. Length (); For ( Int I = 0 ; I I ){ If (SBC [I]> 0 ) // It is a single-byte character or a control character. {

Cisco Unified Communication Voice Gateway

The current communication methods are inseparable from the IP network. To combine the two, you must use the gateway. Now let's talk about the knowledge of Cisco's unified voice gateway. Which models are available in these products, and what are the differences between these models? Cisco Unified Communication Voice Gateway Cisco 1700, 2600XM, 2800, 3700 and 3800, and Cisco Catalyst? The 5000 Series Voice Gateway Router uses SIP to terminate a call and convert the call signal between the PSTN and

Sqlbulkcopy, a new feature of ADO. net

#click (Object sender, eventargs E)...{Starttime = datetime. now;String srcconnstring = "";String desconnstring = "";Sqlconnection srcconnection = new sqlconnection ();Sqlconnection desconnection = new sqlconnection ();Sqlcommand sqlcmd = new sqlcommand ();Sqldataadapter da = new sqldataadapter ();Datatable dt = new datatable ();// Srcconnstring = configurationmanager. connectionstrings ["srcdbconnection"]. connectionstring;Desconnstring = configurationmanager. connectionstrings ["desdbconnectio

Security analysis: Where the real threat of internet telephony comes from

With the popularization of VoIP technology, the security of VoIP voice communication has aroused more and more widespread concern in the industry. But where the security threats of VoIP originate, this should be the first step in the industry to systematically address VoIP security issues. In October of this year, VOI

How to Create a QT/Embedded Development Environment

How to Create a QT/Embedded Development Environment Friendlyarm This article applies to any type of Target Board Based On S3C2410X. Note:To ensure that you can correctly perform the steps described in this document, follow"Fully install RedHat 9.0 step by step"Install your RedHat 9.0 system correctly 1. decompress the source code and configure the path of the QT library.

The SqlBulkCopy of the new features of ADO

){StartTime = DateTime.Now;String srcconnstring = "";String desconnstring = "";SqlConnection srcconnection = new SqlConnection ();SqlConnection desconnection = new SqlConnection ();SqlCommand sqlcmd = new SqlCommand ();SqlDataAdapter da = new SqlDataAdapter ();DataTable dt = new DataTable ();srcconnstring = configurationmanager.connectionstrings["Srcdbconnection"]. ConnectionString;desconnstring = configurationmanager.connectionstrings["Desdbconnection"]. ToString ();srcconnection.connectionstri

Go to SqlBulkCopy to copy data in batches

DateTime startTime; Protected void button#click (object sender, EventArgs e) ...{ StartTime = DateTime. Now; String srcConnString = ""; String desConnString = ""; SqlConnection srcConnection = new SqlConnection (); SqlConnection desConnection = new SqlConnection (); SqlCommand sqlcmd = new SqlCommand (); SqlDataAdapter da = new SqlDataAdapter (); DataTable dt = new DataTable (); // SrcConnString = ConfigurationManager. ConnectionStrings ["srcDBConnection"]. ConnectionString; DesConnString = Co

Bluetooth a2dp in Android

the SEP that can be provided by the remote Bluetooth device (which requires the address of the remote Bluetooth device, which is unique, each Sep can provide some services. The remote Bluetooth device will return a respond, which contains some information, which is least important to the number of seids and media service types. The service type can be obtained through get_capablities.Select the stream endpoint to be created. After the stream_end_point_discover command is sent, multiple seids ar

The SqlBulkCopy of the new features of ADO

StartTime;protected void Button1_Click (object sender, EventArgs e){StartTime = DateTime.Now;String srcconnstring = "";String desconnstring = "";SqlConnection srcconnection = new SqlConnection ();SqlConnection desconnection = new SqlConnection ();SqlCommand sqlcmd = new SqlCommand ();SqlDataAdapter da = new SqlDataAdapter ();DataTable dt = new DataTable ();srcconnstring = configurationmanager.connectionstrings["Srcdbconnection"]. ConnectionString;desconnstring = configurationmanager.connections

Network telephones are the source of a live environment for enterprises to reduce their communication costs

Many enterprise users usually deploy VOIP network phones as one of the most important considerations when deploying network applications. In terms of enterprise-level mature network application models, the trend of such VOIP phones becoming the mainstream communication applications of enterprises is becoming more and more obvious. In fact, according to a recent survey by Telappliant, 100 of the 41% companie

SqlBulkCopy of the new features of ADO (bulk inserting large amounts of data)

SBC=NewSqlBulkCopy (desconnstring,sqlbulkcopyoptions.useinternaltransaction); Sbc. Bulkcopytimeout= the; Sbc. Sqlrowscopied+=NewSqlrowscopiedeventhandler (onrowscopied); Sbc. Notifyafter=dt. Rows.Count; Try { //SBC. DestinationTableName = "Jobs";

P2P bypass Nat

technologies are UDP holes and stun. In addition, there are turn, ice, ALG, and SBC.Nat penetration * Session traversal utilities for NAT (Stun)* Traversal Using relay NAT (turn)* NAT-T negotiation of NAT-traversal in the IKE* Teredo tunneling uses NAT traversal to provide IPv6 connectivity.* Session Border controller (SBC)* UDP hole punching)* TCP hole punching) [Zookeeper] Nat penetration is based on Nat Control * Realm-specific IP (rsip)* Mid

Brief Introduction to NAT penetration technology principles

fixed. After successful negotiation, the data port content of the other party is sent to the application layer. the NAT device cannot analyze it and map it accordingly, resulting in communication failure. the PPTP protocol in the VPN protocol does not have a port in the data connection. how to Make NAT decisions? The ipsec security protocol is invented to ensure data security and authenticate the source. It performs IP verification on the network layer, encrypts the input layer, and encrypts th

USB Series Four: Write data to the USB drive

In the "USB series three", we implemented a series of SCSI commands, in this series, we want to implement the command to write sector to the U disk, so this article is relatively easy, more is to give a realization of the source program.In the third USB series, the SCSI commands we implement are: INQUIRY, read capacity (10), TEST UNIT ready, REQUEST sense, read (10), all the commands that are read out, so it doesn't break the contents of the USB stick, on page 29th of document

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