SIP Face VOIP challenge- The deceive oneself of op



無標題文件

IPPBXFace VOIP challenge: The deceive oneself of operation business?

2009-12-12 12:20:13

sip

As wireless city gain ground, the VOIP phone that is based on Wifi is become again must make a topic that operation business pays close attention to, but operation business of home still is opposite it seems that now this problem deceive oneself.
 
But, in the society that changes in this height informatization, knowledge, people won’t not use this technology because of the deceive oneself of operation business, give operation business stationary point feelings, waited for operation business to make corresponding product people just is used.


Contrary, those knowledge current people is in early use this east east — in Hong Kong, because the government was offerred,spread all over the Wifi with complete public harbor, a few companies that commercialize operation also offer free Wifi (the free Wifi that for instance Yahoo offers on the bus of Hong Kong serves Webus) , the mobile phone that adds Hong Kong has Wifi function, so, I am early heard some people are taking Wifi mobile phone to seek those free Wifi sites in Hong Kong, so that hit free international long-distance.


Go to Hong Kong a few days ago, I try such service technically also, although the SIM of handle machine blocks take out, the mobile phone that wants you only has the software of Skypy and so on, still can get through international is long-distance, the telephone bill is compared normally endowment cost is cheap and too much — the fare that just buys Skypy check actually — these money were equivalent to the moneybag midstream from operation business breaking the moneybag that go out and entered Skypy company — this is operation business to this business deceive oneself! After all how many the overflows tourist door long-distance telephone bill of domestic operation business has is such prediction of a person’s luck in a given year, henceforth even prediction of a person’s luck in a given year how many, I believe at present operation business is analysed without the person, also forecast this number to still be met without the person grow with what kind of speed! Although some people knew to also be opposite this turn a blind eye to, perhaps see and not dare character, because would rather of a lot of people goes down to this deceive oneself! But if you are serious imagine domestic Wifi network spread speed knows this menace is how cannot small look!


So, how should operation business face this kind of menace? In the abdomen that fights the best method of princess of fan defeating iron to enter iron fan princess namely — it is active meet head-on and not be deceive oneself!


Of the opposite, we think —


Did before us a few years the ignore to phone of PC-phone type IP bring about the generation of a batch of software such as Skypy?


at the outset the generation that we brought about QQ to the turn a blind eye to of IM software?


Of the front, we think —


Face telegraphic industry endowment cost reduces the spring tide that turn, we changed a China masses card to inspect the view that is like great scourges, meet head-on actively rolled out this one brand to just make our advocate is business Wu promising? Brought us the swift and violent growth of today’s client and income?


In Hong Kong networks of such a Wifi are mixed terminal is such on all-pervading market, the operation business of Hong Kong people rely on to meet those who will answer this challenge head-on actively? The 0060everywhere of PCCW is such VOIP formula, they rolled out this formula actively, not only did not bring about income to drop and the income that still maintained them continuously grows!
 
No less than we a few rich advocate place character: Although China moves to be not done, other company also can do, skype had been being done, google also rolls out network phone now!
 
Anyhow, face the challenge of the VOIP that is based on Wifi, meeting ability head-on actively is our best strategy, deceive oneself can bungle opportunity for combat. Vast and mighty the history, should come arrive in the future eventually, blocking is do not block — alleged ” green hill block does not live, after all east flow ” !


crm


SIP Face VOIP challenge- The deceive oneself of op



無標題文件

IPPBXFace VOIP challenge: The deceive oneself of operation business?

2009-12-12 12:20:13

sip

As wireless city gain ground, the VOIP phone that is based on Wifi is become again must make a topic that operation business pays close attention to, but operation business of home still is opposite it seems that now this problem deceive oneself.
 
But, in the society that changes in this height informatization, knowledge, people won’t not use this technology because of the deceive oneself of operation business, give operation business stationary point feelings, waited for operation business to make corresponding product people just is used.


Contrary, those knowledge current people is in early use this east east — in Hong Kong, because the government was offerred,spread all over the Wifi with complete public harbor, a few companies that commercialize operation also offer free Wifi (the free Wifi that for instance Yahoo offers on the bus of Hong Kong serves Webus) , the mobile phone that adds Hong Kong has Wifi function, so, I am early heard some people are taking Wifi mobile phone to seek those free Wifi sites in Hong Kong, so that hit free international long-distance.


Go to Hong Kong a few days ago, I try such service technically also, although the SIM of handle machine blocks take out, the mobile phone that wants you only has the software of Skypy and so on, still can get through international is long-distance, the telephone bill is compared normally endowment cost is cheap and too much — the fare that just buys Skypy check actually — these money were equivalent to the moneybag midstream from operation business breaking the moneybag that go out and entered Skypy company — this is operation business to this business deceive oneself! After all how many the overflows tourist door long-distance telephone bill of domestic operation business has is such prediction of a person’s luck in a given year, henceforth even prediction of a person’s luck in a given year how many, I believe at present operation business is analysed without the person, also forecast this number to still be met without the person grow with what kind of speed! Although some people knew to also be opposite this turn a blind eye to, perhaps see and not dare character, because would rather of a lot of people goes down to this deceive oneself! But if you are serious imagine domestic Wifi network spread speed knows this menace is how cannot small look!


So, how should operation business face this kind of menace? In the abdomen that fights the best method of princess of fan defeating iron to enter iron fan princess namely — it is active meet head-on and not be deceive oneself!


Of the opposite, we think —


Did before us a few years the ignore to phone of PC-phone type IP bring about the generation of a batch of software such as Skypy?


at the outset the generation that we brought about QQ to the turn a blind eye to of IM software?


Of the front, we think —


Face telegraphic industry endowment cost reduces the spring tide that turn, we changed a China masses card to inspect the view that is like great scourges, meet head-on actively rolled out this one brand to just make our advocate is business Wu promising? Brought us the swift and violent growth of today’s client and income?


In Hong Kong networks of such a Wifi are mixed terminal is such on all-pervading market, the operation business of Hong Kong people rely on to meet those who will answer this challenge head-on actively? The 0060everywhere of PCCW is such VOIP formula, they rolled out this formula actively, not only did not bring about income to drop and the income that still maintained them continuously grows!
 
No less than we a few rich advocate place character: Although China moves to be not done, other company also can do, skype had been being done, google also rolls out network phone now!
 
Anyhow, face the challenge of the VOIP that is based on Wifi, meeting ability head-on actively is our best strategy, deceive oneself can bungle opportunity for combat. Vast and mighty the history, should come arrive in the future eventually, blocking is do not block — alleged ” green hill block does not live, after all east flow ” !


crm


CRM_Juniper為減延遲將VoIP安全融合到路由器_91-SIP





Juniper為減延遲將VoIP安全融合到路由器

IPPBXJuniper為減延遲將VoIP安全融合到路由器

2010-03-05 14:13:19

sip

  VoIP通常被認為是運行在頂端路由設備上、將語音通信會聚到IP網絡的技術。Juniper網絡公司正在採取一種融合VoIP到更深層次的方法,從而使VoIP及相關的安全需求直接進入路由設備。


  Juniper公司的做法可能會對VoIP的延遲產生重大的影響,而VoIP的延遲對於在網絡上改善語音質量是至關重要的。最近的一項調查顯示,網絡延遲是一個影響企業VoIP部署的關鍵因素。


  在Juniper的解決方案中,Juniper M系列或MX系列路由器用一種稱作「綜合多業務網關( IMSG )」的多業務卡對數據包和安全性進行處理。據Juniper稱,IMSG單元可以消除多達五分之四來自多種外部設備如防火牆和交換機並且與VoIP呼叫線程相關的跳躍來減少延遲。


  IMSG的關鍵部分是一個提供VoIP流量控制功能的會話邊界控制器(SBC)。據稱,通過部署IMSG,Juniper可以減少高達百分之八十潛在的由interchassis連接引起的延遲。


  「 目前,SBC與路由器並行部署在網絡中, 」 Juniper公司資深市場營銷經理Tom DiMicelli接受InternetNews.com時表示 。 「還有一個辦法,就是把SBC同路由功能結合在一起。 」


  DiMicelli指出,服務供應商可以通過從網絡中減少設備和將服務功能融合在現有路由器中,降低成本和延遲。他補充說,由於IMSG有自己的處理能力,VoIP服務不用分享路由器資源而自己執行,這樣就不會限制網絡性能。
  新的IMSG解決方案以首次發佈於2008年10月的智能服務邊緣戰略為基礎,方案中包含了集成的安全防護功能。DiMicelli解釋說,目前,通過運用IMSG,服務提供商已經有一個完整的VoIP安全架構。


  「除存在惡意軟件的網絡之外,我們還能夠識別、檢測大約150種VoIP攻擊協議並減輕它們的危害, 」 DiMicelli說。 「因此,我們可以屏蔽惡意通信,並確保沒有任何應用層的攻擊衝擊VoIP服務。」


  據DiMicelli稱,由於各個獨立設備的功能沒有進行有機組合,而是單獨在發揮作用,因此很難保證VoIP的整體安全。他說,如果入侵檢測系統(IPS)監測網絡攻擊,IMSG通知防火牆停止或阻斷來自網絡的數據包流量。 通過VoIP服務的融合,其安全性也可以得到提升。


  「如果我有一個外部防火牆,我必須使所有流量都通過防火牆」,DiMicelli說。 「在這種情況下,我可以採用防火牆保護我想保護的具體資源,但不是以犧牲通信質量或部署大量防火牆為代價。 」


  Juniper所採取的行動方案意在使VoIP資本增值化。現如今美國和全世界範圍內的主要服務供應商都在拓展該項業務。儘管已經得到了廣泛使用, DiMicelli仍然對Juniper未來業務的持續增長充滿信心。


  DiMicelli說:「通過VoIP原始的用戶數目與語音用戶總人數的比較,我認為,現在仍處在初期的大規模部署階段。隨著准入市場和企業的增加,我認為還會有很多機會。 」


crm


SIP Experience phone of H.323 IP speech_158



無標題文件

IPPBXExperience phone of H.323 IP speech

2009-12-12 12:23:23

sip

Accelerate as what the internet network grows rate, wu of be convinced of a few traditional report also gradually migratory arrived on Internet, among them, IP phone is an expands very quickly service. As a result of the open framework with constitutional Internet, make traditional telegraphic business obtained a lot of new features again in migratory process. Be based on the IP phone of open standard among them, can provide speech communication service to people with a variety of means.
  
  H.323 standard
  
H.323 is put forward for multimedia conference system, included frequency and video two parts, do not put forward technically for IP phone, because suit a phone very much,work to the phone of this kind of IP of phone by gateway means, so by ” borrow ” the standard that comes over to regard IP as the phone. Just used H.323 not just to IP phone, still included other a series of proposals, among them H.225, H.245, H.235, H.450, H.341 waits. H.323 acted as here ” overall technology asks ” , call the IP phone that uses this kind of means normally consequently H.323 IP phone.
  
H.323 is a relatively complete proposal plan, it offerred the working mode that a kind of concentration is handled and manages. The administrative pattern of mode of this kind of job and telegraphic net is consistent, apply to especially build to the compose of the IP telephone network of the phone from the phone. Theory and practice make clear, the IP phone system of dimensions of random of H.323 capable make it. The H.323 nature that because this has support of many soft hardware and good each other,operates a gender became most IP telephone network the first selection of subsidiary channels in the human body through which vital energy.
  
Next, we serve trader through an IP phone of home already some IP telephone networks, use H.323 client to carry software, expanded easily already the function of some IP phone infrastructure. The means that can use similar and instant news report will to the user provide function of IP speech communication. Realize the function that communication of a lot of traditional speech cannot realize.
  
Structure of IP telephone network
  
The network system that forms this IP phone is comprised by the area that is in two different countries (see figure 1 network develop attacks structure) , every area used means of a Cisco 5350 by implement (the following abbreviation 5350) the core that serves as a network, this 5350 have two WAN mouth and opening of two aether net by appliance, can receive the local area network of this locality and modem of DDN base band repeatedly directly. Connect telephone network with general (PSTN) photograph join is block NP60 of unit of 4PRI and data processing of an IP speech through adding an E1 interface, will realize E1 (the B channel of 30 ISDN) with the road by implement photograph join, data of sound of antonym of real time ground undertakes H.323 compresses encode.
  
The user of this locality PSTN that passes accredit needs to dial only 5350, in the speech of 5350 clew falls to be able to dial the PSTN telephone of another area, special undertake communicating conveniently. The record that at the same time server of attestation charge to an account still can save next communicating is used at in the future settle accounts. For the client that serves to using IP phone, need to pay this locality phone Fei Heyuan only under international the IP of long-distance telephone bill opens a telephone bill, and business of IP telephone service does not need hire costly international relay circuitry, need to pay fixed circuit hire fee only, can make through collection IP phone expense scores gain. The service mode that this is business of service of service of traditional IP telephone. We can see a bit very apparent, as a result of the road 2 o’clock by implement it is to place in Internet, besides dial from PSTN beyond this kinds of 5350 means, we can very easily visit through Internet directly 5350.
  
OpenH323 plan
  
Want to realize such function, choose even if use best can abide by H.323 and the 5350 software that have news report, will realize the call of IP phone through the computer. Such software actually exceedingly much, the software such as the NetMeeting that includes Microsoft, TalkRing can come true, but these software more or less used some of a few illicit to call with the function, cannot be linked together with H.323 equipment of the standard well quite receive, and the OpenH323 that develops below Equivalence company support plans however first-rate was abided by newest the standard of ITU H.323 V4 that announce, be based on POSIX 1.1 (can transplant standard of operating system industry) call the consultative warehouse that built a complete H.323, and still try a gender developed gateway of PSTN of draw together of one collar for a horse, net to defend, the applied process bag that the client carries inside. Because developing level to consider the otherness between different platform first-rately, so can first-rate is in all sorts of Unix kind operating system, move below Windows(win32) set operating system.
  
  Small try OpenPhone
  
The process of IP speech application in OpenH323 plan is a software that is called OpenPhone, although this is a software that tries a gender only, can have supported the function of H.323 thoroughly however, also included news report of H.323 IP video of course, if high-speed network exists to join between node, can undertake completely real time visible communication.
  
The software that whole OpenH323 plans can download from Http://www.openh323.org, the main part that runs need below Windows XP is the function library Pwlib.dll of H.323, the abstract layer Cygwin.dll of POSIX, below the System32 list that must put Windows XP, openPhone ability works normally, after OpenPhone is started, entered dial quickly interface (see a picture 2, openPhone interface pursues) , with a few commerce software comparing rises, really the interface is simpler, but we can see, primary functional options is very complete, after OpenPhone is started, started automatically breathe out to await condition, besides can undertake communicating through speech gateway beyond, still can undertake communicating with the computer of other and same moving OpenPhone.   
  
In our use, the defer that discovers a network is met to communicating quality causes very big effect, because we check the Internet join that is in a local area network to be in,usable bandwidth difference compares different period of time big, be in so in the morning 9:00, midday 1:00 and in the evening 8:00 use effects differ completely. The Ping order that takes through Windows XP can check the delay that includes to ICMP, after defer is more than 300ms, in call the other side when, can shake bell, can establish link far from. Calculate defer to arrive in 200ms between 300ms, communicate quality is exceedingly poor also, so this kind application just also suits next adoption to receiving an environment like CableModem/DSL, resemble be being used at present very general dial be being received is essential cannot bear the weight of of this kind of application, it is so in the development process of the network, application also often can promote a certain domain the development of whole even industry. Conversely, in the foundation construction catchs up with after coming, can develop a more application again.
  
This we just try to establish link between OpenPhone and 5350 speech gateway, so if the reader has fun at, can the join that oneself try to select a site and video communication.
  
Last word
  
In the development process of whole newsletter line of business we discover, business has all sorts of traditions to go up toward the network that is based on IP gradually the trend of integrated, interconnection, such doing is to raise single network to use efficiency first, avoid to repeat construction, can realize the appreciation function that a few traditional business cannot realize second through open IP network, through these appreciations the service creates the opportunity with new more. The article comes from: Le Cui?www.daozhou.net) is textual address: Http://www.daozhou.net/news/education/else/15982.shtml


crm


CRM_IXIA發佈業界領先的VOIP測試產品_37-SIP





IXIA發佈業界領先的VOIP測試產品

IPPBXIXIA發佈業界領先的VOIP測試產品

2010-03-05 14:12:37

sip

  先進的用戶建模提供了真實世界的,運營商級別的5類VoIP交換機的仿真能力,從而實現大規模的VoIP設備和網絡的全性能測試。


  Ixia宣佈其下一代的面向社區和商業領域的VoIP測試產品。IxLoadTM Voice具備超高的性能,完全滿足現代媒體網關的容量測試需求,在每個機箱內可提供無與倫比的高達100萬的基於SIP和RTP的終端仿真—該容量是其最接近的競爭對手的5倍。Ixia新的AcceleronTM -XP測試模塊通過硬件實現語音協議,並達到在容量上的里程碑。


  IxLoad使用多種語音協議,複雜的呼叫序列以及語音,視頻和數據混合的三重播放流量等高度真實的測試場景來實施對包括基於IP的PBX,軟交換,呼叫管理器,會話邊界控制器和媒體網關在內的VoIP網絡元素的測試。IxLoad獨特的用戶建模能力可以仿真在業務使用方面和時間方面有差異的用戶群。這種辦法得到的性能結果可以精確預測真實的網絡容量,從而使得電信運營商能夠正確地部署他們的網絡。Ixia支持所有的基礎VoIP呼叫和傳輸協議,包括SIP,RTP,SCCP,MGCP,H.323和H.248,並具備複雜的呼叫流程和Class 5特性。


  經過多年隔離的,小規模的普通用戶和商業用戶的逐步發展,VoIP的部署最終成為主流。Infonetics Research公司預期在2011年以前,社區和SOHO主導的VoIP用戶將會有25%的複合增長率,用戶數量有望超過1.87億。為了滿足這樣的增長需求,網絡設備製造商必須提供能夠處理更多的呼叫,複雜的協議和服務的VoIP設備。各種規模的網絡設備製造商和匯聚業務提供商需要驗證其新型VoIP設備和網絡的性能和互操作性,以確保他們可以處理複雜的,大強度的VoIP流量。


  「VoIP協議和技術已經廣為人知,但是當數量龐大的呼叫與大量的數據和視頻流量混合在一起的時候,許多潛在的問題就顯現出來了,」Ixia的市場副總裁,Anupam Sahai說。「我們開發Acceleron-XP, VQM測試模塊和IxLoad測試應用程序來仿真城市規模的真實世界用戶群,使得我們的用戶在他們的用戶之前就可以發現並解決他們的設備和網絡方面的問題。」


  IxLoad仿真和測試安全方面和網絡基礎設施方面的協議,包括IPSec, PPP, DHCP以及多種形式的鑒權認證。語音呼叫的安全也同時通過SIP/TLS和SRTP得到支持。Ixia的VQM測試模塊可以提供實時的最終用戶體驗質量(QoE)評價,例如為300個同時進行的呼叫提供PESQ分值,而不必在測試之後等待耗時的分析。IxLoad為快速測試,性能細化,故障排查和自動測試提供了極大的便利,從而使測試效率得到了最大化。


  「VoIP服務已經被普通消費者和SOHO用戶廣泛採用,但是我們希望下一個VoIP使用的增長來自於SMB(中小企業)。」 Infonetics公司的分析師,Matthias Machowinski說。「對他們來講,服務可靠性和語音質量將成為購買的首要條件。通過Ixia的新一代IxLoadTM Voice,電信運營商在加速發展他們的高端用戶之前就可以全面地測試他們的網絡,從而在開通新用戶的時候不會產生出人意料的驚訝。」


  Ixia的單平台解決辦法,以及一系列的測試接口和有針對的測試應用軟件,使得網絡設備製造商,電信運營商和企業可以確保他們所有設備的質量和性能—不論這些設備是單個的,還是組合的。Ixia的測試應用軟件涵蓋了一致性測試,性能測試,自動測試和對真實網絡的維護。Ixia的IxRave通過主動測試的方式為已經部署的VoIP網絡和其他網絡提供服務驗證,其獨特的測試和映射功能可以確保問題被迅速地隔離在一定的地理區域內或家庭內。


  通過Ixia的IxLoadTM Voice,網絡設備製造商使他們的產品更快地推向市場,電信運營商和企業能夠保證他們的網絡部署滿足容量要求和響應需求。IxLoadTM Voice可以使電信運營商自信地評價他們的網絡元素和網絡部署—從而消除由網絡性能劣化和停機帶來的昂貴的損失。IxLoadTM Voice立即就可以提供,並會在3月23日到25日,在倫敦舉辦的IPTV World Forum(IPTV全球論壇)上進行展示,展台號#34。


crm


SIP Experience iron opens E letter- Phone of mobil



無標題文件

IPPBXExperience iron opens E letter: Phone of mobile phone network

2009-12-12 12:23:27

sip

Plan of the Skype below EBay banner and supplier of much home mobile phone sign an agreement: Install Skype communication software in the mobile phone beforehand, but be reached the phone operation business such as British O2 however by T-Mobile, AT&T ban.


Recently, plan of the Skype below EBay banner and supplier of much home mobile phone sign an agreement: Install Skype communication software in the mobile phone beforehand, but be reached the phone operation business such as British O2 however by T-Mobile, AT&T ban. The phone battalion that phone operation business worries about them closes can drop accordingly, ban a handle machine network to use network phone to serve so.


Phone of mobile phone network looks is to step forward dimension difficult, but phone of network of domestic mobile phone is to develop flourishingly however. And mention network telephone call, small make up it is good to recommend to everybody here with phone of honest mobile phone network — iron connects E to believe network phone. Phone of E letter network is to use solid word channel, change line of solid word network, send and receive information through satellite communications platform, because quality can get very good assurance; secondly, fare is as low as network phone. Phones of a lot of network of person selected choose have news report, very big one part reason is its endowment cost is cheap. Iron connects E to believe network phone, word of the city after convert full a cost is low to 8 minutes of money, long-distance low reach 0.12 yuan. And E believes Wap to dial a telephone is commonly not of collection discharge charge, because initiate call discharge fee is very small, the GPRS that has not obtained operation business is buckled take a level. But government-owned network proposal: If if pass,undertake for long communicating, still deal with 5 yuan of formulas to include a month, nevertheless all the time since small make up had not met the issue that is buckled to take discharge to expend.


To pass on broad user, iron connects E to believe network phone to be rolled out especially ” register can make telephone call of mobile phone network freely 20 minutes ” . Entry E believes mobile phone WAP: Wap.eesina.com, choice ” register freely ” , the system will allocate an E signal to pile up to you randomly, after installing a password, land can dial a telephone freely. If you do not like this E signal to pile up, you still can change. The 2nd kind of means, believe government-owned net through landing E: Http://www.eesina.com/ , the webpage is registered freely, bind calm can; the 3rd kind of method, download E believes client end to undertake registered, click ” phone ” face plate, “The setting is helped ” in tie calm mobile phone.


Play turn iron connects E to believe phone of mobile phone network


Iron connects E to believe phone of network of initiate mobile phone, convenient and practical endowment cost is cheap, got of a lot of users mix reputably welcome. Small because telephone traffic is more,make up, be forced to seek the network telephone call with endowment more cheap cost. Below the commendation of IT friend, the author uses E to believe phone of mobile phone network, use now had had period of time, share to everybody here play turn the experience of phone of network of E letter mobile phone.


1, memory is exclusive and quick address, direct call


Want to land E to believe WAP to be able to dial a telephone only, e letter platform is met phone of call both sides. This has a little skill, after loginning first, store network address of individual exclusive WAP, when wanting to dial a telephone next time, do not need to input E to believe Zhang date and password, direct input telephone number but.


2, WAP address book and client of computer E letter carry interconnection


The address book above mobile phone WAP can have an edition inside mobile phone address book not only, still can carry in computer client edit and add, computer clavier operates convenient freely. In computer client end edits address book of mobile phone Wap, the Wap priority that can set friend number replaces brief number with what set your friend telephone number (shrink a date) . Want to land client end only, choose ” phone ” in face plate ” mobile phone Wap ” , you can edit along with the heart. Want to dial a telephone when you so when, inside number be callinged, input telephone number or you replace brief number for what the friend installs (shrink a date) , click can initiate call. For instance I install the phone in the home into ” 001 ” , should be in only ” number be callinged ” the input inside casing ” 001 ” , can dial the telephone in the home.
The 2nd kind of method is simple dialing means is: Enter the WAP address book that has edited, direct selected element beats friend name from the back ” call ” , can dial a telephone. You can meet those who forget you to be installed for the friend shrink occasionally a date, at this moment you can choose this kind to dial means, enter address book, direct call. E believes network phone, communicate not only clear, telegraphic character, fill a value to go to the lavatory, and let you understand consumption. Computer client end and mobile phone Wap have Zhang date remaining sum to inquire in real time, should communicate only after the end, you can inquire your Zhang date circumstance, understand clear consumption, do not spend injustice money. E letter chooses in client end ” my purse ” ” consumption inquires ” , can examine you;e of all consumptive detailed list believe Wap, choice ” remaining sum inquires ” .


crm


CRM_IP語音:嵌入式系統新應用_136-SIP





IP語音:嵌入式系統新應用

IPPBXIP語音:嵌入式系統新應用

2010-03-05 14:13:57

sip

IP語音(VoiceoverIP,VoIP)是嵌入式系統的一個新興應用。許多人看到過將計算機變成電話的應用,但是很少有人看到手機使用網絡連接進行語音會話。這類手機與老式電話機的不同之處在於,它們裡面有嵌入式操作系統。數字電話具有模擬數字轉換器和處理數字信號的支撐電子單元。這類系統使用專用分組交換機(PrivateBranchExchange,PBX)為呼叫提供路由,與老式的模擬電話使用PBX的方式非常相似,採用數字數據只不過使它們的效率更高。IP電話使用IP棧、交換機和路由器代替了模擬交換技術與老式的PBX。圖1-3是大型的老式手工PBX和現代自動化PBX的一個對比。



圖1-3 老式手工PBX(左)和現代PBX、VoIP手機的對比


  現在許多PBX支持VoIP,現代PBX照片由PBXpress公司慷慨提供


  嵌入式Windows的最常見卻被隱藏起來的應用,是我們絕大多數人經常接觸的自動取款機ATM。ATM使用Windows系統,負責驅動處理器和受理銀行卡、處理請求和吐出鈔票。這些機器的製造商意識到業務的關鍵性,採用了很多措施來保證嵌入式應用盡可能安全,瞭解到這些你應該會很高興。


  嵌入式操作系統的流行版本包括:


  Windows NT(老式系統)


  Windows XP


  Windows CE


  Linux


  定制操作系統


  注意最後一項是個統稱,因為有的系統實在太小,甚至還沒有Windows CE的一個小腳本那麼大。


  正如你看到的一樣,嵌入式終端一個有趣的特點就是讓操作系統變得模糊不清,這是因為Windows、Linux和Cisco已經用作了基本的操作系統。有些嵌入式操作系統是專用的,補充一下這個事實你可能開始對上述問題有了些認識。由於它們的環境多少有些封閉,並且缺乏廠商支持補丁程序,這類系統提出了一個有意思的但也不是不可逾越的挑戰。


  


crm


CRM_IP語音專題培訓(第八期)開班在即_48-SIP





IP語音專題培訓(第八期)開班在即

IPPBXIP語音專題培訓(第八期)開班在即

2010-03-05 14:12:45

sip

  IP語音專題培訓(第八期)開班在即


  為適應IP語音市場的訊速成長,以及企業通信網絡邁向整合的新趨勢,在成功舉辦了七期IP語音專題培訓的基礎上,現將於2009年10月24日和10月25日兩天在北京舉辦IP語音專題培訓(第八期)培訓班。本次培訓班由工業與信息化部電信科學技術研究院、大唐電信科技產業集團、大唐高鴻數據網絡技術股份有限公司共同舉辦。屆時,由工業與信息化部電信科學技術研究院致力於企業信息化技術、通信技術、IP語音技術的研究生導師、戰略專員、以及多名博士、高級工程師等資深專家進行授課。


  作為電信科學技術研究院以及大唐電信科技產業集團旗下的上市公司之一,大唐高鴻數據網絡技術股份有限公司在數據通信和NGN/IP語音領域具有多年技術實力與經驗的積累;與此同時,信息產業部電信科學技術研究院下屬研究生部作為國家教委授權的研究生培養點,同時設有博士後流動站,匯聚了大批具有深厚專業技術背景的專家,技術力量雄厚。


  培訓宗旨和願景


  希望我們的培訓對您的工作、學習、就業,以及貴公司的發展有所幫助!


  培養優秀企業信息化人才,提供技術支撐,共同推動信息等高新技術及其產業的繁榮發展!


  保持業內最專業的IP語音培訓基地的領先地位!


  培訓時間與地點(開課前一周,通知詳細安排)



  培訓費用


  1080元/人(含培訓費、資料費、證書、午餐,辦公筆記本、簽字筆、茶水、咖啡費用),需要住宿的學員請提前通知培訓班聯繫人,費用自理。


  如在2009年10月20日前,四人以上同時報名,則可享受


  驚爆優惠價:880元/人!!!


  培訓結束經考試合格,頒發信息產業部電信科學技術研究院研究生部和大唐高鴻數據網絡技術股份有限公司的認證證書。


  課程安排


  第一節:”專家致辭”。


  第二節:”通信基礎教程”:講述通信網絡基礎知識,包括Internet介紹,TCP/IP協議講解,PSTN基本網絡情況,數據網基本結構及其發展方向等,主要側重於名詞解釋,如私網地址,NAT,DHCP,局域網,帶寬,流量,NGN,3G、IP電話話音質量、IP電話的語音編碼及VoIP系統的主要信令體系等,為後續知識的理解做鋪墊;


  第三節:”企業信息化與IP語音技術” 結合行業熱點,對企業行業的IP語音市場與應用情況進行分析,宏觀講述目前IP語音在企業應用領域、運營的發展狀況,以及未來的趨勢;


  第四節:”WLAN技術”幫助您在瞭解802.11協議族標準和主流WLAN設備及天線的基礎上,進一步掌握無線網絡勘測與設計,並具備使用無線產品進行應用佈署、工程實施和運維指導的能力;


  第五節:”呼叫中心、IP調度應用技術”:將結合當今呼叫中心運營、400/800、營銷式呼叫中心、中小企業應用的呼叫中心案例、呼叫中心系統平滑IP化改造以及應急、指揮等熱點應用案例來講述。


  第六節:”國內外IP語音應用和行業熱點分析”:介紹融合通信、三網合一、ICT、統一通信、統一溝通等技術的來源、發展以及在行業中的位置及各自的作用等,包括無線、視頻等方面的技術。


  第七節:”IP語音技術產品體現及應用”:從呼叫中心產品、平台產品、IPPBX、中繼網關產品、終端產品(駐地網關/IAD等)著手,介紹市場上主流的IP語音產品、應用方案;


  第八節:”答疑”:總結及互動討論、答疑。


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crm


CRM_IP性能測試系統供貨商Ixia將收購凱達普通信公司_1





IP性能測試系統供貨商Ixia將收購凱達普通信公司

IPPBXIP性能測試系統供貨商Ixia將收購凱達普通信公司

2010-03-05 14:14:30

sip

  網絡通信中國(原VOIP中國)消息,Ixia公司(納斯達克股票代碼:XXIA)今天宣佈其已與凱達普通信公司(「凱達普」)(納斯達克股票代碼:CATT )簽訂最終協議。根據該協議,Ixia公司將以每股9.25美元的價格以現金收購凱達普。此次交易額約為1.05億美元,扣除凱達普的現金和投資之後的淨額為6300萬美元。預計收購將於第三季度完成。


  凱達普的3G及4G無線網絡測試方案是Ixia公司完整IP性能測試系統和服務驗證平台的一個良好補充。通過此次收購,Ixia公司將能夠通過無線和有線網絡為新老客戶(特別是為電信設備製造商和全球服務供應商)多合一IP服務測試提供單源解決方案。凱達普先進的無線測試系統為數以百計的協議及其變體(包括LTE、IMS、WiMAX、CDMA、VoIP、GPRS 及 GSM)提供了卓越的高性能解決方案。


  Ixia公司總裁兼首席執行官Atul Bhatnagar表示,「我們今天正處在一個轉折點上,先進的通信正迅速融合為一個固定和移動通信相結合的單一無縫傳送網絡。此次收購將使Ixia公司成為無線和有線網絡端到端IP測試方案的領先供應商。此次收購將直接擴大我們的潛在市場,使我們成為3G及4G無線測試的領軍者,同時還將推動收入和利潤增長。」


  凱達普董事長兼首席執行官Dick Karp 表示,「Ixia公司和凱達普在IP及無線通訊的技術領導及產品組合方面達成優勢互補。通過將Ixia公司的多合一IP測試能力與凱達普的無線測試專業知識結合起來,Ixia公司可以向市場提供一個可以影響兩家公司技術、客戶及全球分銷渠道的強大而單一的解決方案,以加快主要市場的增長及創新。」


  此次收購將對凱達普所有已發行普通股股票的股權進行要約收購,收購之後再進行第二步的合併。凱達普的董事會已一致建議凱達普股東接受要約,Dick Karp 和 Nancy Karp簽訂了收購股份(約占已發行股份的37%)的輔助協議。預計要約將在接下來的十個工作日內開始進行,但需取決於一些慣例性條件,包括凱達普已發行股票多數持有人接受 要約收購以及獲得監管部門的批准(包括反壟斷合規性)。


  預計此次交易最早將對Ixia公司非公認會計原則下2009年第四季度的收入產生增效作用。非公認會計原則收入不包括股票薪酬、已收購無形資產的攤銷及其它非經常性費用,並為扣除適用稅影響後的淨額。


  托馬斯.韋塞爾合夥公司擔任Ixia公司的財務顧問,博恩-凱悟律師事務所擔任法律顧問。


  電話會議信息


  Ixia公司將在東部時間5月12日(星期二)上午8:30舉行電話會議來討論此次收購。電話會議將向公眾開放,公眾可通過公司網站(www.ixiacom.com )「投資者」一欄收聽電話會議的網上直播。網上直播之後,電話會議電子版本將在Ixia公司網站存檔90天。


crm


SIP Ellick Corp provides VoIP and contact center c



無標題文件

IPPBXEllick Corp provides VoIP and contact center capability for VSC

2009-12-12 12:22:35

sip

Network communication China (Voipchina) VerifySmart(TM) Corp. (VSMR: OTCBB) : Safe, without the global leader that pays processing service territory false VerifySmart(TM) (VSC) announces willingly, the VerifyGateway that this company already offerred VSC, VeriSmart Card and VerifyNGo whole set serve and signed an agreement with Ellick Corporation. Regard this as the one part of share agreement, ellick Corp. VoIP and contact center will be provided for VSC in Manila (Contact Centre) ability.


 This agreement will be Ellick Corp. The security that provides a kind to use VSC to have a technology only, can hand in manageability platform patulously. According to the agreement, ellick Corp. Will use solution of this kind of VSC to reduce with its client group of high risk trade the con rate that the quantity concerns and refund rate. In addition, ellick Corp. Will be its applicable client group make up VeriSmart Card, offer a kind to handle a solution without con card thereby. According to the agreement, VSC will be obtained by trade the cent of cost of frequency calculative attestation, quantitative calculative VeriSmart Card according to card sells cost and basis to fill cost time calculative to block cost full a cost. This agreement period of efficacy is 2 years, can renew the contract after 2 years. Predict every quarter battalion closes will exceed 3200000 dollars.


 


crm