X-Lite is a VoIP software of CounterPath Solutions, Inc. (in former times Xten network, Inc.), which it makes possible for each user, telephone calls over Internet from PC to PC to lead from PC to the fixed net and from the fixed net to the PC. The program is offered for the free Download. Under the designations "X-pro" or "eye beam" can be acquired a version equipped with more functionality. Some VoIP offerers make its registered customer available a before-configured X-Lite. Test versions of the variant X-TAPI Lite are available from global IP Telecommunications in the languages German, English, French and Slowakisch.
Due to new compression algorithms the language quality is partially better than with a conventional telephone call. The program is executable on the operating systems Windows, Mac OS X and Linux.
The free version offers the codecs G.711, SPX, iLBC and to GSM. The liable to pay the costs version XPro contains additionally the codec G.729a (for narrow-band connections) and further into of the conventional Telefonie usual functions. List of the codecs under IP-Telefonie.
Besides there is a version for pocket PC. Thus handy cord lot telephones can be developed in connection with WLAN technology. X-PRO for pocket PC (or also briefly X-PDA) runs on devices, which run with pocket PC 2003 as operating system.
It pay attention that it must be configured to X-Lite with some entries (username, password, SIP proxy and NAT proxy), if one does not procure oneself a version before-configured over its service tenderer. By this fact SIP Telefonie appears generally and X-Lite in the special one unites users as a little user-friendly.
Occasionally it is necessary to co-ordinate the own Firewall with X-Lite there for a correct function some haven (from the inside outward) be opened must (the latter is already with most typical Heimanwender Firewalls in the pre-setting the case). Usually only company Firewalls are configured in such a way that traffic not only from outside to inside, but also from the inside outward one blocks). The default of haven are (TCP and UDP) 5060 & 5061 for SIP, further for RTP haven 8000 as well as for RTCP haven 8001. Owing to STUN SIP Telefonie should work also behind NAT well. The default haven for it is 3478 (TCP and UDP). required further TCP haven 80 (HTTP) X-lite outward.
A comparable VoIP software e.g. is. SIPPS of the Nero AG, which is available as free demo version, which offers all functions of the full version. The current version is completely deactivated at expiration of the demo phase. Instead in the meantime the free version SIPPS Free is offered, which corresponds to the earlier Light version in the function range and is temporally not limited.
An alternative for pocket PC is a new Softphone named VoIPSurfer. It completes VoIP of discussions via IAX, which does not have the advantage that one less to no problems with routing and at Hotspots has, portforwardings etc. is necessarily. The software runs under WM 2003/2003SE like also under WM 5.0. A drop is that one can select also directly from the existing contacts and that it can be telephoned thereby even well with 200 MHz MDA a Vario aka XDA mini S.
Meanwhile also Skype offers the possibility of holding from the PC conversations into the telephone network. In contrast to X-Lite here the manufacturer of the software appears at the same time also as an offerer of the VoIP service. However it concerns with Skype closed, minutes, which are also hardly to be solved because of the coding. In contrast to it SIP Telefonie is an open standard, which should lead at least theoretically to an alive competition after low-priced and products user-friendly.
Further free Softphone gives it with snom. This is identical in the surface and the behavior the hard Phone 360 of snom. Even the Web interface is integrated.
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