1850:
611:, essentially a VoIP complement to its popular KX-TGA analogue phones which likewise support up to 4 cordless handsets. However, unlike the analogue system which supports only four handsets in one "conference" on one line, the TGP supports 3 simultaneous network conversations and up to 8 SIP registrations (e.g. up to 8 DID lines or extensions), as well as an Ethernet pass-through port to hook up computers on the same drop. In its publicity Panasonic specifically mentions
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Accordingly, by the end of 2011, for under US$ 3000 it was possible to build an office VoIP system based entirely on cordless technology capable of several hundred metres reach and on Power over
Ethernet dedicated wired phones, with up to 8 DID lines and 3 simultaneous conversations per base station,
191:
Mobile VoIP will require a compromise between economy and mobility. For example, voice over Wi-Fi offers potentially free service but is only available within the coverage area of a single Wi-Fi access point. Cordless protocols offer excellent voice support and even support base station handoff, but
662:
Cisco also released the SPA112, an
Analogue Telephone Adapter (ATA) to connect one or two standard RJ-11 telephones to an Ethernet, in November 2011, retailing for under US$ 50. This was a competitive response to major cordless vendors such as Panasonic moving into the business VoIP cordless market
663:
Cisco had long dominated, as it suppressed the market for the cordless makers' native VoIP phones and permitted Cisco to argue the business case to spend more on switches and less on terminal devices. However, this solution would not permit the analogue phones to access every line of a multi-line
163:
client, which then uses a data network to send and receive SIP messaging, and to send and receive RTP for the voice path. This methodology of turning a mobile handset into a standard SIP client requires that the mobile handset support, at minimum, high speed IP communications. In this application,
555:
codecs and connections to a "main NAT/Firewall router with a NAT=yes and canreinvite=no.. As such, my asterisk will stay in the audio path and can't redirect the RTP media stream (audio) to go directly from the caller to the callee." Minor problems were also reported: "Whenever there is an I/O
187:
infrastructure. In this implementation, the mobile handset continues to operate as it always has (as a GSM or CDMA based device), but now it can be controlled by a SIP application server which can now provide advanced SIP-based services to it. Several vendors offer this kind of capability today.
373:
for handoff for modern IP-based telephony. A phone can in theory offer both PCS cordless and mobile VoIP and permit calls to be handed off from traditional cordless to cell and back to cordless if both the PCS and UMA/SIP/IEEE standards suites are implemented. Some specialized long distance
207:
The mobile operator industry business model conflicts with the expectations of
Internet users that access is free and fast without extra charges for visiting specific sites, however far away they may be hosted. Because of this, most innovations in mobile VoIP will likely come from campus and
638:
switches aimed at the VoIP market. Unlike industry standard switches that provided the full 30 watts of power per port, these allowed under 50 watts of power to all four PoE ports combined. This made them entirely suitable for VoIP and other low-power use
195:
High speed services from mobile operators using EVDO rev A or HSPA may have better audio quality and capabilities for metropolitan-wide coverage including fast handoffs among mobile base stations, yet may cost more than Wi-Fi-based VoIP services.
556:
activities ... i.e. reading the Flash space (mtdblockd process), this will create some hick-ups (or temporarily losing audio signals)." The combination of OpenWRT and
Asterisk is intended as an open source replacement for proprietary
203:
became capable of sending and receiving email, browsing the web (albeit at low rates) and allowing a user to watch TV. Mobile VoIP users were predicted to exceed 100 million by 2012 and InStat projects 288 million subscribers by 2013.
722:, which increases mobile voice quality, and permits optional use of video calling and front and rear-facing cameras. In the future, Verizon's VoLTE is expected to also permit video sharing, chat functionality, and file transfers.
670:
As of late 2011, most cellular data networks were still extremely high latency and effectively useless for VoIP. IP-only providers such as
Voipstream had begun to serve urban areas, and alternative approaches such as
417:. Typically providing mobility costs more, e.g., the Panasonic VoIP cordless phone system (KX-TGP) costs approximately three times more than its popular DECT PSTN equivalent (KX-TGA). Some companies, including
655:
with 24 handsets each capable of communicating on any subset of the 8 lines, plus an unlimited number of softphones running on computers and laptops and smartphones. This compared favourably to proprietary
924:
264:
and initial traffic, handing off to another when the first is about to fall out of range - the underlying network need not be IP-based, but typically the IP stream is guaranteed a certain
378:
attempted this but it has not generally caught on. A more popular approach has been full-spectrum handsets that can communicate with any wireless network including mobile VoIP, DECT and
1822:
406:
operating systems, yielding a phone that is capable of communicating with literally any digital network and maintaining a continuous call at high reliability at a low access cost.
525:
Aircell's battle with some companies allowing VoIP calls on flights is another example of the growing conflict of interest between incumbent operators and new VoIP operators.
346:, P1905 permits a call to be initiated on a wired phone and transferred to a wireless one and then resumed on a wired one, perhaps with additional capabilities such as
651:
application, or supporting an 8-line PBX, especially in combination with a multi-line handset such as the
Panasonic KX-TGP (which does not require a powered port).
159:
There are several methodologies that allow a mobile handset to be integrated into a VoIP network. One implementation turns the mobile device into a standard
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522:
was introduced introducing slightly updated SIP VoIP client. Nokia maintains a list of all phones that have an integrated VoIP client in Forum Nokia.
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450:) composed of such cheap devices could similarly support roaming mobile VoIP phones. These experiments, and others for IP roaming such as
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137:
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The mainstreaming of VoIP in the small business market led to the introduction of more devices extending VoIP to business cordless users.
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require all base stations to communicate on one LAN as the handoff protocol is generally not supported by carriers or most devices.
879:
409:
Most VoIP vendors implement proprietary technologies that permit such handoff between equipment of their own manufacture, e.g. the
274:
call initiation when the initial contact with a network is not one that the user has subscribed to or been in contact with before.
992:
2900:
824:
502:). The SIP stack and client have since been introduced in many more E and N-series dual-mode Wi-Fi handsets, most notably the
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Another implementation of mobile integration uses a soft-switch like gateway to bridge SIP and RTP into the mobile network's
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When moving between IP-based networks, as is typically the case for outdoor applications, two other protocols are required:
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routers, this radically expanded the potential reach of mobile VoIP applications. Users reported acceptable results using
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89:
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911:
61:
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is an end-to-end
Internet Protocol (IP) system infrastructure that is currently deployed in Fort Lauderdale, Florida.
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had a mobile VoIP and data system operating in the license-free ISM 900 MHz band (902 MHz – 928 MHz).
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standard VoIP protocols (typically SIP) are used over any broadband IP-capable wireless network connection such as
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plans to launch its VoLTE service "in the coming weeks," according to media reports in August, 2014. It provides
216:, and applications where the benefits are high enough to justify expensive experiments (medical, military, etc.).
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In spring 2008 Nokia introduced a built in SIP VoIP client for the very first time to the mass market device (
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became the first App Store app to enable VoIP on the iPhone and iPod Touch over cellular 3G networks.
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protocols for short range or campus communications where all base stations are linked into the same
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Phil
Goldstein, "Verizon to launch VoLTE in the 'coming weeks,' will enable native video calling"
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35:
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In second half of 2010 Nokia introduced three new dualmode Wi-Fi capable Series40 handsets (
228:— the standard used by most VoIP services, and now being implemented on mobile handsets and
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enables a continuous conversation that originates, and ends with, a wired terminal device.
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8:
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1973:
1958:
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and, Nokia C3-01 Gold
Edition) with integrated SIP VoIP that supports HD voice (AMR-WB).
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both with integrated SIP VoIP client that can operate both over Wi-Fi and 3G networks.
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networks, but which have limited handoff capabilities between networks. The intent of
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1968:
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490:) stack was introduced and a VoIP client in Nokia E-series dual-mode Wi-Fi handsets (
421:, offer adapters for analog/DECT phones as alternatives to their expensive cordless.
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Mike Dano, FierceWireless, "After VoLTE, what is the future of the telephone call?"
835:
711:
537:
519:
199:
As device manufacturers exploited more powerful processors and less costly memory,
912:"Microwave Journal Blog: Introducing xMax®--the world's first mobile VoIP network"
682:
with integrated SIP VoIP client that can operate both over Wi-Fi and 3G networks.
608:
Panasonic introduced the KX-TGP base station supporting up to 6 cordless handsets
2414:
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2012:
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369:. While these capabilities were not widely implemented, they did provide the
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1980:
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updated the iPhone developer SDK to allow VoIP over cellular networks. iCall
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which has been very popular in Europe. Various services use these handsets.
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2424:
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1995:
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technology especially as VoIP cordless was far cheaper than PBX cordless.
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Early experiments proved that VoIP was practical and could be routed by
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rev A (which is symmetrical high speed — both high speed up and down),
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2109:
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By
September 2014, mobile-enabled VoIP (VoLTE) had been launched by
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into data communications making it useless for voice traffic.
474:
use on their networks, often by deliberately introducing high
132:
network. Two types of communication are generally supported:
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2771:
2079:
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for delivering VoIP and other IP multimedia to cellular users
745:
552:
548:
466:. At this time, some mobile operators attempted to restrict
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291:
177:
173:
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base station handoff, specifies equivalent capabilities for
2776:
1073:
859:
766:
568:
339:
825:"Mobile VoIP From Minute Stealing to Wheeling and Dealing"
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1209:
395:
247:
1182:
1177:
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was capable of supporting mobile VoIP applications via
518:) running Series 40 operating system. Later that year (
455:
303:
299:
153:
149:
675:(open source GSM) were competing with mobile VoIP.
49:. Unsourced material may be challenged and removed.
2970:
1892:
986:
898:"Aircell: On U.S. Planes, VoIP Will Be Muted"
390:is that they be added to such phones running
927:Mobile Internet Solutions, September 4, 2014
2907:Global telecommunications regulation bodies
2943:
1899:
1885:
993:
979:
350:in another room. In this case the use of
109:Learn how and when to remove this message
286:protocol establishes QoS guarantees for
626:Several router manufacturers including
2971:
1906:
260:handoff, permitting one network to do
224:Mobile VoIP, like all VoIP, relies on
148:, and wider area communications using
1880:
974:
909:
667:, only one hardwired line per phone.
2953:
806:— Voice over LTE via Generic Access
765:(IMS), a set of specifications from
47:adding citations to reliable sources
18:
16:Extension of a voice over IP network
710:across its national network and by
690:In February 2012, Nokia introduced
678:In November 2011, Nokia introduced
424:
13:
1823:USA use restrictions while driving
1798:Legality of recording by civilians
14:
2990:
1000:
438:even on low-end routers like the
128:is an extension of mobility to a
2952:
2942:
2933:
2932:
2921:
2542:Free-space optical communication
1860:
1859:
1848:
1836:
365:based on 800, 900, 2.4, 5.8 and
268:(QoS) during the handoff process
23:
547:stick. As OpenWRT runs on most
242:— the Unlicensed Mobile Access
219:
34:needs additional citations for
942:
930:
918:
903:
891:
873:
852:
817:
486:In the summer of 2006, a SIP (
1:
810:
783:Mobile communications over IP
306:and wired backbones using AC
2928:Telecommunication portal
2709:Telecommunications equipment
1843:Telecommunication portal
834:. 2010-08-11. Archived from
454:, were the beginning of the
246:allows VoIP to run over the
232:and an increasing number of
7:
2445:Alexander Stepanovich Popov
800:— VoIP over a Wi-Fi network
732:Comparison of VoIP software
725:
647:or Wi-Fi APs) typical of a
615:(founded by the creator of
488:Session Initiation Protocol
10:
2995:
2149:Telecommunications history
1765:Phantom vibration syndrome
1760:Mental health from overuse
880:Forum Nokia - VoIP details
2916:
2858:
2795:
2757:Public Switched Telephone
2717:
2681:
2638:
2579:
2569:telecommunication circuit
2530:Fiber-optic communication
2513:
2275:Francis Blake (telephone)
2222:
2070:Optical telecommunication
1914:
1831:
1783:
1730:
1660:
1569:
1512:
1479:
1466:
1444:Open-source mobile phones
1405:
1357:
1307:
1296:
1195:
1114:
1022:
1008:
744:, network access through
458:protocol suite including
2668:Orbital angular-momentum
2105:Satellite communications
1944:Communications satellite
910:David (5 October 2009).
737:Fixed mobile convergence
371:functional specification
2547:Molecular communication
2370:Gardiner Greene Hubbard
2199:Undersea telegraph line
1934:Cable protection system
1808:Photography and the law
1803:Mobile phones in prison
763:IP Multimedia Subsystem
701:
685:
600:
574:
528:
509:
481:
429:
342:. In combination with
2689:Communication protocol
2475:Charles Sumner Tainter
2290:Walter Houser Brattain
2235:Edwin Howard Armstrong
2043:Information revolution
900:GigaOm August 26, 2008
778:List of VoIP companies
374:cordless vendors like
278:For indoor or campus (
244:Generic Access Network
2663:Polarization-division
2395:Narinder Singh Kapany
2360:Erna Schneider Hoover
2280:Jagadish Chandra Bose
2260:Alexander Graham Bell
1991:online video platform
1855:Telephones portal
1818:Texting while driving
1755:External power supply
1454:Windows Phone devices
623:and Asterisk itself.
440:Linksys WRT54G series
357:An older technology,
282:equivalent) use, the
2505:Vladimir K. Zworykin
2465:Almon Brown Strowger
2435:Charles Grafton Page
2090:Prepaid mobile phone
2018:Electrical telegraph
1770:Radiation and health
1086:Standards comparison
773:List of SIP software
308:powerline networking
208:corporate networks,
43:improve this article
2455:Johann Philipp Reis
2214:Wireless revolution
2176:The Telephone Cases
2033:Hydraulic telegraph
860:"VoIP user figures"
636:Power over Ethernet
634:released sub-$ 300
565:xG Technology, Inc.
324:Power over Ethernet
250:cellular backbone.
134:cordless telephones
2653:Frequency-division
2630:Telephone exchange
2500:Charles Wheatstone
2430:Jun-ichi Nishizawa
2405:Innocenzo Manzetti
2340:Reginald Fessenden
2075:Optical telegraphy
1908:Telecommunications
885:2010-07-14 at the
714:in a few markets.
288:home area networks
266:quality of service
2966:
2965:
2704:Store and forward
2699:Data transmission
2613:Network switching
2564:Transmission line
2410:Guglielmo Marconi
2375:Internet pioneers
2240:Mohamed M. Atalla
2209:Whistled language
1874:
1873:
1813:Telephone tapping
1656:
1655:
1604:Instant messaging
1462:
1461:
1191:
1190:
712:AT&T Mobility
348:videoconferencing
119:
118:
111:
93:
2986:
2956:
2955:
2946:
2945:
2936:
2935:
2926:
2925:
2924:
2797:Notable networks
2787:Wireless network
2727:Cellular network
2719:Types of network
2694:Computer network
2581:Network topology
2495:Thomas A. Watson
2350:Oliver Heaviside
2335:Philo Farnsworth
2310:Daniel Davis Jr.
2285:Charles Bourseul
2245:John Logie Baird
1954:Data compression
1949:Computer network
1901:
1894:
1887:
1878:
1877:
1863:
1862:
1853:
1852:
1851:
1841:
1840:
1839:
1750:Electronic waste
1740:BlackBerry thumb
1690:Japanese culture
1477:
1476:
1437:iOS jailbreaking
1305:
1304:
1227:Operating system
1042:Network operator
1027:Channel capacity
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995:
988:
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829:
821:
579:In January 2010
533:By January 2009
520:Nokia 6260 Slide
425:Industry history
114:
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100:
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51:
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19:
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2509:
2415:Robert Metcalfe
2270:Tim Berners-Lee
2218:
2038:Information Age
1910:
1905:
1875:
1870:
1849:
1847:
1837:
1835:
1827:
1779:
1732:
1726:
1652:
1565:
1508:
1504:Cloud computing
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1468:
1458:
1449:Symbian devices
1415:Android devices
1401:
1353:
1344:Satellite phone
1339:Projector phone
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939:August 26, 2014
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904:
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887:Wayback Machine
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645:security camera
641:Motorola Canopy
619:), its product
603:
577:
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512:
484:
442:. Suggesting a
432:
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380:satellite phone
363:cordless phones
222:
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696:Nokia Asha 311
692:Nokia Asha 302
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280:cordless phone
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2144:Smoke signals
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2122:Semiconductor
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1427:BlackBerry 10
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1334:Feature phone
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1313:Manufacturers
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1249:airplane mode
1247:
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1237:phone cloning
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1024:
1021:
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1002:Mobile phones
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841:on 2010-12-01
837:
833:
832:Global Vision
826:
820:
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805:
802:
799:
796:
794:
791:
789:
788:Voice over IP
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543:running on a
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130:voice over IP
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91:
88:
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81:
77:
74:
70:
67:
63:
60: –
59:
58:"Mobile VoIP"
55:
54:Find sources:
48:
44:
38:
37:
32:This article
30:
26:
21:
20:
2640:Multiplexing
2515:Transmission
2480:Nikola Tesla
2470:Henry Sutton
2425:Samuel Morse
2355:Robert Hooke
2320:Amos Dolbear
2255:John Bardeen
2174:
2154:Telautograph
2058:Mobile phone
2013:Edholm's law
1996:social media
1929:Broadcasting
1670:Box breaking
1641:address book
1494:Distribution
1359:Form factors
1324:Camera phone
1311:
1288:Web browsing
1139:
1123:
1095:
957:. Retrieved
953:
950:"Technotips"
944:
932:
920:
905:
893:
875:
863:. Retrieved
854:
843:. Retrieved
836:the original
831:
819:
705:
694:and in June
689:
677:
669:
661:
653:
625:
607:
604:
588:
578:
563:The company
562:
532:
524:
513:
485:
468:IP tethering
464:IEEE 802.11u
444:mesh network
433:
413:system from
408:
388:IEEE 802.11u
356:
351:
332:IEEE 802.3at
328:IEEE 802.3af
277:
272:IEEE 802.11u
252:
238:
223:
220:Technologies
206:
198:
194:
190:
182:
158:
125:
121:
120:
105:
96:
86:
79:
72:
65:
53:
41:Please help
36:verification
33:
2840:NPL network
2552:Radio waves
2490:Alfred Vail
2400:Hedy Lamarr
2385:Dawon Kahng
2345:Elisha Gray
2305:Yogen Dalal
2230:Nasir Ahmed
2164:Teleprinter
2028:Heliographs
1731:Environment
1705:silent mode
1549:contactless
1532:advertising
1489:Development
1407:Smartphones
1116:Generations
1032:Frequencies
804:VoLGA Forum
708:T-Mobile US
595:Nokia C3-01
591:Nokia X3-02
516:Nokia 6300i
460:IEEE 802.21
384:IEEE 802.21
352:mobile VoIP
344:IEEE 802.21
258:IEEE 802.21
230:smartphones
210:open source
201:smartphones
156:protocols.
122:Mobile VoIP
2886:Antarctica
2845:Toasternet
2767:Television
2250:Paul Baran
2182:Television
2166:(teletype)
2159:Telegraphy
2137:transistor
2115:Phryctoria
2085:Photophone
2063:Smartphone
2053:Mass media
1793:Carrier IQ
1733:and health
1648:Television
1499:Management
1392:Smartwatch
1349:Smartphone
1037:Multi-band
865:October 9,
845:2010-09-09
811:References
581:Apple Inc.
404:smartphone
316:IEEE P1901
284:IEEE P1905
262:call setup
124:or simply
99:March 2010
69:newspapers
2870:Americas
2859:Locations
2830:Internet2
2591:Bandwidth
2295:Vint Cerf
2192:streaming
2170:Telephone
2110:Semaphore
2001:streaming
1775:Recycling
1722:Wallpaper
1700:Ringtones
1561:Ticketing
1537:campaigns
1527:Marketing
1329:Car phone
1244:Telephony
1198:operation
1091:Tethering
1016:protocols
959:26 August
621:Switchvox
504:Nokia N95
500:Nokia E70
496:Nokia E61
492:Nokia E60
415:Panasonic
402:or other
296:Bluetooth
2973:Category
2938:Category
2825:Internet
2815:CYCLADES
2732:Ethernet
2682:Concepts
2606:terminal
2557:wireless
2380:Bob Kahn
2223:Pioneers
2048:Internet
1939:Cable TV
1866:Category
1609:Learning
1589:Gambling
1579:Blogging
1554:donating
1544:Payments
1514:Commerce
1472:software
1469:specific
1319:3D phone
1283:Tracking
1232:Security
1215:services
1205:Features
1156:adoption
1124:Analogue
1106:XHTML-MP
1079:SIM lock
1069:dual SIM
1064:SIM card
1012:networks
883:Archived
726:See also
720:HD Voice
628:TRENDnet
617:Asterisk
541:Asterisk
436:Asterisk
320:Ethernet
312:HomePlug
236:phones.
234:cordless
214:Asterisk
2958:Commons
2948:Outline
2901:Oceania
2820:FidoNet
2805:ARPANET
2618:circuit
2187:digital
1916:History
1717:Txt-spk
1662:Culture
1571:Content
1522:Banking
1420:rooting
1377:Phablet
1300:devices
1222:History
1196:General
1140:Digital
1054:Roaming
742:Forfone
716:Verizon
673:OpenBTS
632:Netgear
535:OpenWRT
476:latency
452:Sputnik
400:Android
83:scholar
2896:Europe
2866:Africa
2850:Usenet
2810:BITNET
2747:Mobile
2623:packet
2132:MOSFET
2127:device
1924:Beacon
1864:
1712:Selfie
1695:Novels
1685:Dating
1680:Comics
1675:Charms
1636:Social
1624:Search
1599:Health
1594:Gaming
1467:Mobile
1432:iPhone
1382:Slider
1298:Mobile
1059:Signal
1010:Mobile
798:VoWLAN
613:Digium
446:(e.g.
392:iPhone
136:using
85:
78:
71:
64:
56:
2879:South
2874:North
2835:JANET
2772:Telex
2762:Radio
2601:Nodes
2596:Links
2517:media
2095:Radio
2080:Pager
2008:Drums
1974:video
1969:image
1959:audio
1629:local
1614:Music
1584:Email
1387:Slate
839:(PDF)
828:(PDF)
746:Wi-Fi
558:PBXes
553:G.729
549:Wi-Fi
419:Cisco
411:Viera
376:Senao
292:Wi-Fi
178:WiMAX
174:Wi-Fi
126:mVoIP
90:JSTOR
76:books
2891:Asia
2777:UUCP
2737:ISDN
1619:News
1481:Apps
1397:Fold
1372:Flip
1278:Spam
1173:4.5G
1163:3.5G
1096:VoIP
1074:eSIM
1047:list
961:2017
867:2012
767:3GPP
758:UMTS
702:2014
686:2012
649:SOHO
630:and
601:2011
575:2010
569:xMax
529:2009
510:2008
482:2006
472:VoIP
470:and
462:and
430:2005
386:and
367:DECT
340:G.hn
338:and
336:MoCA
322:and
170:HSPA
166:EVDO
138:DECT
62:news
2782:WAN
2752:NGN
2742:LAN
2023:Fax
1964:DCT
1785:Law
1367:Bar
1271:RCS
1266:MMS
1261:SMS
1210:GSM
1101:WAP
756:or
750:LTE
665:PBX
657:PBX
643:or
545:USB
448:WDS
396:QNX
359:PCS
248:GSM
240:UMA
226:SIP
185:SS7
176:or
161:SIP
152:or
146:LAN
142:PCS
140:or
45:by
2975::
1183:6G
1178:5G
1168:4G
1151:3G
1146:2G
1135:1G
1130:0G
952:.
830:.
754:3G
752:,
748:,
593:,
560:.
498:,
494:,
456:5G
398:,
394:,
334:,
318:,
304:4G
302:,
300:3G
298:,
294:,
290::
180:.
172:,
154:4G
150:3G
2909:)
2905:(
1900:e
1893:t
1886:v
1142::
1126::
1014:,
994:e
987:t
980:v
963:.
914:.
869:.
848:.
639:(
330:/
326:/
314:/
310:/
112:)
106:(
101:)
97:(
87:·
80:·
73:·
66:·
39:.
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