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X-LITE
Based
on the advanced architecture of eyeBeam 1.5 (CounterPath's
carrier grade telephony client), the new X-Lite is designed to
showcase some of the feature rich capabilities available with
our commercial softphone such as superior audio and video
quality, zero-touch configuration, IM & Presence, and a
comprehensive personal address book.
Note: To install, you
will require the following information:
username, password, authorization name, domain or IP
address.
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X-Lite is a fully
functioning softphone featuring many of the popular features
of eyeBeam. With your existing connection to a VoIP or
broadband service or an IP-PBX (e.g. Asterisk, enterprise
LAN), it allows you to make calls to any softphone, mobile or
landline number.
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SJphone
SJphone
č uno dei software VoIP pił noti ed utilizzati, in
particolare č spesso offerto in combinazione con i
servizi dei maggiori operatori VoIP. Il programma
gira praticamente su qualsiasi cosa assomigli ad un PC: sono
infatti supportati i sistemi Microsoft Windows 98SE/ME/2K/XP/2003,
Linux e Mac OS X ed i PDA dotati di PocketPC 2002/2003/2003SE,
Windows CE.NET 4.0/4.2/5.0, Windows Mobile 5.0 (il softphone
č ottimizzato per l’utilizzo con Intel XScale® CPU).
SJphone č compatibile con i due principali standard
di segnalazione delle chiamate, SIP e H.323 e
funziona quindi con moltissimi operatori VoIP e sistemi IP-PBX.
E’ possibile configurare diversi “servizi” (solitamente
legati alla scelta di un operatore) e passare in modo semplice
da uno all’altro. I codec disponibili per
la trasmissione del segnale vocale sono G.711 A/u, GSM, Speex
e iLBC.
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MySpeed
PC VoIP Standard simulates VoIP traffic over your Internet
connection and provides an analysis of the voice quality,
along with a report of the consistency of bandwidth provided
by your ISP.
The key
measures of connection quality for VoIP are not broadband
speeds as many would think, but Jitter and Packet Loss. When
Jitter or Packet Loss are high, it often results in a garbled
communication similar to a bad cell phone connection. MySpeed
PC VoIP measures both jitter and packet loss, and rates your
connection for voice quality.
- Test
your connection for VoIP sound quality.
- Automatically
test your connection speeds at regular
intervals, view your results over time
- See
the number of VoIP lines supported by
your Internet connection
- View
graphical reports of the data transfers
for detailed analysis to help identify the cause of poor
performance
- Measure
the consistency of your download speeds,
a critical measure for time-sensitive applications such
as VoIP
- Measures
Jitter and Packet Loss
The primary measures of VoIP connection quality are Jitter
and Packet Loss. MyVoIPSpeed simulates voice traffic on
your Internet connection, determines the levels of Jitter
and Packet Loss, and rates the corresponding voice sound
quality.
Jitter is the variation in time between
packets sent and packets arriving caused by network
difficulties such as route changes, congestion, packet
loss, traffic regulators etc., and plays a major role in
the quality of a VoIP call. VoIP works by sending voice
data as a stream of packets from source to destination.
These packets can take a varying amount of time to reach
the destination and invariably do not arrive in the order
in which they were sent.
For a VoIP telephone call to work well the packets sent
from the source must arrive within a certain time window
(or ‘buffer’) in order for the receiving end to
reassemble the packets in the correct order and reproduce
the spoken words. When there is excessive jitter the time
delay is too long (high latency) and packets arrive
outside the time window and get lost from the call, or ‘discarded’.
As a result, the recomposed sound no longer reflects
exactly what was sent, and depending of the extent of the
delay may not be understandable by the recipient.
Packet loss plays a key role in the
quality of VoIP connections, as high packet loss causes
some of the voice data not to arrive to the recipient.
Packet loss occurs when voice packets are discarded by the
jitter buffer, or dropped by network routers/switches due
to high congestion. MyVoIPSpeed measures the percentage of
packet loss and reports the associated level of sound
quality. For more accurate results Packet Loss is measured
in one direction only, which is normally not possible
using traditional methods such as ping, where routing can
affect the reply.
The VoIP graph shows the variance of UDP jitter during the
simulation test. This variance must be kept to a minimum
otherwise call quality will be degraded. The packet loss
distribution is shown in red, high packet loss will result
in broken sound during calls.
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