.

Network connectivity through low-cost industry-standard interfaces influences the consideration of whether to use DSPs or server blades for media processing, especially in media servers, where packet-delays are not as troublesome and TDM interfaces are not required. Without telephony interface blades and their attendant chassis and power systems available to host the DSPs, the addition of DSPs on proprietary blades must be independently justified. They will continue to be justified for the highest-density applications. However, with the semiconductor industry continuing to follow Moore’s law, host media processing will support 1500 channels on one blade in 2010. DSPs will always offer even higher densities, but if 1500 channels meets the system requirement, higher densities will have little incremental value.

Not every use of the term “HMP” means the same thing. There are, for example, HMP systems that do no actual media processing, so it is important to understand how the term is being used today.

Modern digital-media telephony systems require signal processing to transform a call stream or extract information from it. Transformation includes the processing required to send or receive a fax and to transcode the stream from one speech codec to another for capability matching or bandwidth reduction. DTMF detection, caller ID, and in-band call-progress analysis are good examples of information extraction.

There are many limited-function media servers on the market that don’t actually do any media (signal) processing. There is an Internet Engineering Task Force (IETF) “RFC” (2833)  that defines how a gateway can perform the in-band-tone analysis to extract some of the embedded information, such as DTMF and caller ID. In this case, all the media server need do is parse the RTP buffers from a gateway to derive the tone information.

But what about transcoding, where one voice-compression scheme (vocoder) it transcoded to another? Some media servers, for example, simply process buffers, and, therefore, cannot perform any transcoding, limiting them to low-function voice messaging. RTP packets are simply stored and played back as they are received. This means no AGC, volume control, time-scale modification (playback speedup and slowdown), or capabilities matching with endpoint terminals, making this type of so-called HMP media server a viable option only in the most functionally constrained applications.

For years, the terms “signal processing” and “media processing
. 

 Network connectivity through low - cost industry - standard interface charm the consideration of whether to use DSPs or server blade for media processing, especially in medium servers, where packet - delay are not as troublesome and TDM interfaces are not want. Without telephony interface blades and their attendant human body and power systems available to host the DSPs, the addition of DSPs on proprietary blades must be independently justified. They will continue to be justified for the high - density applications. However, with the semiconductor diligence continuing to follow Moore ’s jurisprudence, host medium processing will support 1500 channels on one blade in 2010. DSPs will always offer even high densities, but if 1500 channels meets the system requirement, higher densities will have little incremental value. 

 Not every use of the term “ HMP ” means the same thing. There are, for example, HMP systems that make no actual media processing, so it is important to sympathize how the condition is being use today. 

 Modern digital - media telephony systems require signal processing to transform a call flow or extract information from it. Transformation includes the processing required to send or receive a facsimile and to transcode the stream from one speech codec to another for capability matching or bandwidth reduction. DTMF detection, caller ID, and in - band call - progress psychoanalysis are effective examples of information extraction. 

 There are many circumscribed - function media servers on the market that do n’t actually do any media (signal) processing. There is an Internet Engineering Task Force (IETF) “ RFC ” (2833)   that defines how a gateway can perform the in - ring - tone psychoanalysis to extract some of the embedded information, such as DTMF and caller ID. In this case, all the media waiter need do is parse the RTP buffers from a gateway to derive the tone data. 

 But what about transcoding, where one voice - compression scheme (vocoder) it transcoded to another? Some medium servers, for example, simply process buffers, and, therefore, cannot perform any transcoding, limiting them to low - function voice messaging. RTP package are simply stored and play back as they are received. This means no AGC, book control, time - scale change (playback speedup and slowdown), or capabilities matching with endpoint terminals, making this character of so - called HMP medium server a viable choice only in the most functionally constrained application. 

 For years, the terms “ signal processing ” and “ media processing
.

Netaork connectivity througm low-cost industty-wtandacd intedfaces ivfluences the consideration lf whetyer to use DSPs or serxer bladed for meeia krocessing, especiemly in media acrverv, where packet-dglays are nod as troublesoke aud TDM interfaces are not required. Wythout yepephony interfwce njadea and their attendant chassis and lower sjstems available yo host the DSPs, the additlon lf DSPs on propriehary blades muse be independdntly justpyied. They wjll continue to be justified fof the highest-debsuty dpplicationw. Howvver, with the semiconguctor ondustry contikuing to follow Moore’s law, hovt media processind will su[pkrt 1500 channels on inw blage it 2010. DRPs dilm elwzys ofver even highsr densitiew, but if 1500 channels keqnx the system requiweient, higher densities will have little pncrsmental value.

Not every yse of the term “HMP” mgans the swme thing. There are, for example, HMP systems that go no xctbql meaua processing, so it is important to understand rkw tme term is being used today.

Kofetg digital-medix tele'gohy systems require signal procwssing to tramsform a call stream or exteact informanion from it. Transformction includzs the procrssing required to send or deceive a fwx and to granscode the stfeak xrom one speech codec to agother foc capcbility oatcning ow bandwidtj redmwtion. DTMF detectiln, caplar ID, and ln-band call-progress analysis arx good examplgs mf pnformatijn exbraction.

There awe many limiteb-functiou medix servers kn the karket that don’t actuallf do any medie (signal) [rocwssibg. Therd is an Interney Engineegiug Task Firce (IETF) “RFC” (2833)  thet dgfjnes how a gateccy can perform thr iv-bagd-nonx anajfsis to extrdct romd of tfe embedded knfotmation, such as DTMF and caller ID. In this cwse, all jhe media server need co is parse the RTK buffxrs frum a batgway to derive the tone informafion.

But wjat about transsodikg, wrere one vpice-compression scheme (vocoder) it transroded to another? Some mwdia servers, for excmkle, simply prpcess buffers, dnd, therefore, cannot perform any tranxcoding, limiting them to lof-funchion voice messaging. RTP packets are simply stored and played back as thet are ceseived. This meams no AYC, rolume sontcou, time-scale modigication (playback speedup and suowdown), mr capabilities matching with rnapoint terminxls, making this type of ao-called HMP media server a viable optipn only in the most funcbionally xonstdained appuications.

For years, the tzrms “sugnal peocedsing” and “medka lrlcessing
. Network connectivity through low-cost industry-standard interfaces consideration whether to DSPs or server in servers, where packet-delays not as troublesome TDM interfaces are not required. Without interface blades and their attendant chassis and power systems available to host the the addition of DSPs on proprietary blades must be independently justified. They will to justified the applications. However, with the semiconductor industry continuing to follow Moore’s law, host media processing will support channels on one blade in 2010. DSPs will offer even higher densities, if 1500 channels meets the requirement, densities will little value. every use of term “HMP” means the same thing. There are, for example, HMP systems that do no actual media so it to understand the is used today. Modern systems require signal processing to transform or extract information from it. Transformation includes the required to or receive a fax and to the stream from one speech codec to another capability matching or bandwidth reduction. DTMF detection, caller ID, and in-band call-progress analysis are good information extraction. There are limited-function media servers the that actually any media processing. There is an Internet Engineering Task Force (IETF) “RFC” (2833) defines how a gateway can perform the in-band-tone analysis to of embedded information, such DTMF and caller ID. this all the media server is the a to the tone information. But about transcoding, where one voice-compression (vocoder) it transcoded to example, simply process buffers, and, therefore, cannot perform transcoding, limiting them to low-function voice messaging. packets are simply stored and played back as they are received. This no AGC, time-scale modification (playback speedup and slowdown), or capabilities with endpoint terminals, making type of so-called HMP media server a viable option in most functionally applications. For years, terms “signal processing” “media processing
.

Network connectivity througH low-cost inDustrY-stAndArD intErfaCes influences tHE conSideration of whether to uSe DSPS oR ServER bLades For mediA PrOCEssInG, eSpeCiALlY in meDia Servers, Where packeT-deLaYs are not as trOUbLesome and TdM iNterfaces are Not RequirEd. witHOut teLepHony iNterfaCE bladeS and their AtTEndant CHassis aND PoWer sYstems available to HOsT The DSPs, the addiTion of dSpS oN PRopRieTary blades MuSt be iNDependeNTlY JUStiFIed. They will coNtinue to be jUStiFied foR tHe hIGhest-dEnsitY aPPliCations. HoweVer, wIth the semIconduCTor induSTry contInuing To fOllOw MoORe’S lAw, hOsT MedIA pRocESsiNg will suPpOrT 1500 chanNels ON ONE blaDe iN 2010. DSPS will Always offer evEn hIgheR DenSitieS, but iF 1500 chaNnEls meEts the SysteM rEquirement, higheR denSities wilL haVe LitTlE incrEMental ValUe.

NOt every Use of thE TerM “Hmp” MEaNs the same thing. TherE aRE, FoR example, hMP sysTEmS tHAt do no acTuAl mEdia PROcessIng, sO It Is importAnt to uNDeRsTand how ThE term iS bEinG usEd todAY.

ModErn digItal-mediA telePHony systems reqUIre signal procESsING tO TranSfoRm a call streAm or EXtraCt inFOrMatIOn froM it. TrAnSFoRMation includes the prOcEssing RequiRed to send or reCeive a fax aND TO transcoDe thE StREam from one speeCh codEc to anotheR For capabIlity Matching Or bandwidTH ReductioN. DTmF dEteCtiON, CaLler ID, and in-baND Call-PrOgress aNalYsis are GooD exAmpLes Of InformatiOn extracTiOn.

thErE arE many LImited-fuNcTioN mEdiA servERs on thE markEt thAt DoN’T acTually dO AnY MEdia (SiGnAl) prOceSsIng. ThEre iS An INternet engineeriNg TASk FoRcE (IeTF) “RFC” (2833)  tHat defines how A gAteway can pErForM the in-BANd-tone anAlysis to extract some of thE EmbeddeD inFormaTion, Such as DTMf anD calleR ID. iN this cAse, all The meDiA seRVEr neeD DO iS paRsE the RTP bufFERs fRom a gAtEway To derivE the tone informatioN.

but What about tranScoDing, WHErE onE VoICe-cOmPResSIOn scheme (vocoder) It transcodEd TO aNother? Some MEdiA sErvers, fOr exampLe, simPLy proceSs buffers, And, therefOrE, canNOT peRform any trAnscodinG, limiting THem to LOw-FunctIon Voice mEsSagIng. RTp packeTS arE simpLy storEd And plaYed baCk As they arE received. This means no AGC, Volume ContrOl, tIme-scale mOdiFIcaTion (playbAck sPeedup and sLowDowN), or caPabILitieS matCHiNg wITh endPoinT Terminals, MAkIng THIs Type of so-calLED hMP Media SerVEr a viaBle oPtion only in the mosT Functionally coNstrAINed AppLIcatIoNs.

For years, the tErmS “sIGNal proceSsIng” and “media ProcessiNg
.

Network connectivity th rough low- costind ust ry -sta ndar d interfaces i n flue nces the consideration  of w he t hert ouse D SPs ors er v e r b la de s f or me dia p roc essing,  especiall y i nmedia server s ,where pack et- delays are n otas tro ub les o me an d T DM in terfac e s arenot requi re d . With o ut tele p h on y in terface blades an d  t h eir attendantchassi sa nd p owe r s ystems ava il ablet o hostt he D S Ps, the additionof DSPs onp rop rietar ybla d es mus t bein d epe ndently jus tifi ed. Theywill c o ntinuet o be ju stifie d f ortheh ig he st- de n sit y  a ppl i cat ions. Ho we ve r, wi th t h e s emic ond ucto r ind ustry continu ing  tof oll ow Mo ore’s  law ,hostmediaproce ss ing will suppor t 15 00 channe lson  on eblade in 201 0.DSP s willalwayso ffe re v e nhigher densities,bu t if  1500 ch annels me et s  the sys te m r equi r e ment,  hig h er  densiti es wil l  h av e littl eincrem en tal  va lue.Noteveryuse of t he te r m “HMP” meanst he same thing .  T h e re are,  fo r example,HMPs yste ms t h at  do no ac tualme d ia processing, so it i simport ant t o understandhow the te r m is being  use d  t o day.

Modern d igita l-media te l ephony s ystem s requir e signalp r ocessing  to  tr ans for m acall stream o r extr ac t infor mat ion fro m i t.Tra nsf or mation in cludes t he  p ro ce ssi ng re q uired to  s end  o r r eceiv e  a fax  andto t ra ns c ode  the st r ea m from  o ne  spe ech  c odecto a n oth er forcapabilit y m a tchi ng  o r bandw idth reductio n.  DTMF dete ct ion , call e r  ID, and  in-band call-progressa nalysis  ar e goo d ex amples of  in format ion extrac tion.
Ther eare m any l i m it ed- fu nction med i a  se rvers  o n th e marke t that don’t actua l lydo any media(si gnal ) pr oce s si n g.Th e rei s  an Internet En gineeringTa s kForce (IET F ) “ RF C” (283 3)  tha t def i nes how  a gatewa y can per fo rm t h e  in -band-tone  analysi s to extr a ct so m eof th e e mbedde dinf ormat ion, s u chas DT MF and  c allerID. I nthis cas e, all the media server  needdo is  pa rse the R TPb uff ers froma ga teway to d eri vethe t one infor mati o n. 

B u t wha t ab o ut transc o di ng, w he re one voic e - c omp ressi ons cheme(voc oder) it transcod e d to another?Some m edi a s e rver s,  for example,sim pl y processbu ffers, and,  therefo re ,  cann ot per form a ny tran s c od i ng, li miti ngthem to l ow- fu n ction v oi ce messag ing.  R TP pac kets a r e si m p ly stored and pl ayedb a ck as the y are  r eceived .  Thi s means no  AGC, volum e cont rol,  time -scalemo difica tio n(playbacks peedup an d slo wdown),  o r ca pab ilitie s ma t c hingwith  e ndp oint term i n al s ,ma k ing  thi s typ eof s o-calledH MP media  se r ver a v ia ble o ptiono nl y in the mos t f uncti o n ally const r aine d  a p plica tions. 

Foryears,t hete rms “si gna l processin g” and “m e dia  p roce ssing
.

Network connectivity_through low-cost_industry-standard interfaces influences the_consideration of_whether_to use_DSPs_or server blades_for media processing,_especially in media servers,_where packet-delays are_not_as troublesome and TDM interfaces are not required. Without telephony interface blades and their_attendant_chassis and_power_systems_available to host the DSPs,_the addition of DSPs on_proprietary blades_must be independently justified. They will continue to_be_justified for the_highest-density applications. However, with the semiconductor industry continuing to_follow Moore’s law, host media processing_will support 1500_channels_on_one blade in 2010._DSPs will always offer even higher_densities, but if 1500 channels meets_the system requirement, higher densities will have_little incremental value.

Not every use of_the term “HMP” means the_same thing._There are, for example, HMP_systems that do_no actual_media processing, so_it is important to understand how_the term is_being used today.

Modern digital-media telephony systems_require_signal processing to_transform_a_call stream_or extract information_from_it. Transformation_includes_the processing required to send or_receive_a fax and to transcode the stream_from one speech codec_to_another for capability matching_or bandwidth reduction. DTMF detection,_caller ID, and in-band call-progress analysis_are good_examples of_information extraction.

There are many limited-function media servers on the market that_don’t actually do any media (signal)_processing. There is an_Internet Engineering_Task_Force (IETF) “RFC”_(2833)_ that_defines how a gateway can perform the_in-band-tone analysis_to extract some of the embedded_information, such as DTMF_and_caller ID. In this case, all_the media server need do is_parse the RTP buffers from_a_gateway_to derive the tone information.

But_what about transcoding, where one voice-compression_scheme (vocoder) it_transcoded to another? Some media servers, for_example,_simply process buffers, and, therefore, cannot_perform_any transcoding, limiting them to low-function_voice_messaging._RTP packets are simply stored_and played back as they are_received. This means no AGC, volume control, time-scale modification_(playback speedup and_slowdown), or capabilities matching with_endpoint_terminals,_making this type of so-called HMP media server a viable_option only_in the most_functionally constrained applications.

For years, the terms “signal processing” and “media_processing