From 900Mb to 11.7Mb

De­signed for mo­bil­ity cus­tomers, and the­o­ret­i­cally of­fer­ing con­nec­tiv­ity at speeds close to land based broad­band, a new gen­er­a­tion of high through­put satel­lites is pre­sent­ing more op­por­tu­ni­ties to mar­itime, en­ergy and off­shore users. Could such satel­lites

OffComm News - - FRONTPAGE -

Re­duc­ing VoIP & video call data con­sump­tion

De­mand for VoIP and video chat on­board is grow­ing strongly. For in­stance, our ship vis­its of­ten start with the crew ask­ing if they will be get­tin g video chat or in­stant

mes­sag­ing “this time”. But even though de­mand is in­creas­ing, noone should imag­ine that the avail­able ap­pli­ca­tions are de­signed for use over satel­lite. It’s Globecomm’s con­tention that mar­itime users will to some ex­tent con­tinue to be sub­ject to lim­its on band­width com­pared with shore side users. There­fore, to de­liver any­thing like a shore side ex­pe­ri­ence, ships will need to work smarter with their band width, us­ing op­ti­mised prod­ucts that keep bills at rea­son­able lev­els while pro­vid­ing a bet­ter ser­vice. Two new Globecomm Mar­itime prod­ucts, Ac­cess Chat and Ac­cess Chat Plus have been specif­i­cally de­signed to ad­dress this need, of­fer­ing a very high qual­ity VoIP and video chat ex­pe­ri­ence specif­i­cally de­signed for ship­board use.

“Air­time ven­dors and ser­vice providers are rais­ing ex­pec­ta­tions be­yond what can be de­liv­ered on­board ship in

a cost ef­fec­tive and

prac­ti­cal man­ner.”

Ac­cess Chat pro­vides in­stant mes­sag­ing and Vo IP call­ing/ con­fer­enc­ing while Ac­cess Chat Plus pro­vides the same with the ad­di­tion of video call­ing/ con­fer­enc­ing. Both are very light prod­ucts in terms of set up and data us­age ~ no more than 1Mb in size ~ and can be in­stalled eas­ily on any Win­dows or An­droid de­vice (an iOS ver­sion is due later this year) or even a USB stick. In our tests, a two- per­son, voice-only, three minute con­ver­sa­tion over a typ­i­cal VoIP ap­pli­ca­tion used 4.14MB of data. Over Ac­cess Chat, just 575KB was used. A six- minute video and voice chat be­tween two peo­ple over Ac­cess Chat Plus gen­er­ated data traf­fic of just 2.9MB. Over stan­dard VoIP, the same call would use 8.2MB. Fi­nally, a 30 minute video chat ses­sion be­tween four peo­ple, three of them us­ing video, one us­ing voice only, would run to about 900Mb us­ing com­mer­cially avail­able video con­fer­enc­ing prod­ucts. Ac­cess Chat re­duced the data load to 11.7Mb. Band­width us­age over Ac­cess Chat is con­fig­urable per user or cus­tomer and can be ad­justed on the fly. VoIP calls can be made over data pipes as low as 8kbps and video calls with through­put rates as low as 40kbps. Typ­i­cally, a user will get the same qual­ity as a typ­i­cal land- based call but will use 10 per­cent of the band­width. Use of Ac­cess Chat or Chat Plus re­quires a li­cence key and the soft­ware is avail­able in a range of pric­ing op­tions for cor­po­rate and crew use, with cus­tomised pric­ing avail­able when the ser­vice is bun­dled with Globecomm Mar­itime air­time ser­vice con­tracts.

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