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of our trusted advisors is here to help, offering world-class customer
support through our online customer service center. Superior customer
support helps differentiate Sky Voice by responding to your needs
as fast and effectively as possible.
At your convenience, you can browse the information in this section
or Contact Us.
Most Frequently Asked Questions
- How much bandwidth do I need?
- How do I call another Sky Voice subscriber for
free?
- How do I dial a Singapore phone number?
- How do I dial an International phone number?
- Why does my call sound broken up?
- What does "PSTN" mean?
How much bandwidth do I need?
To use the best quality / highest bandwidth codecs (G711a/u)
we recommend a connection speed of no less than 128Kb/s in each
direction (up and down).
How do I call another Sky Voice subscriber for free?
To call another Sky Voice subscriber, just dial the Sky Voice number
of the other party. The call is free anytime, anywhere in the world,
provided that both parties are connected to high speed Internet.
How do I dial a Singapore phone number?
To dial any fixed land line or GSM phone number in Singapore,
you must dial:
65 + Phone number
How do I dial an International phone number?
To dial any PSTN phone number that is outside Sky Voice
Network, you must dial:
Country Code + City Code + Phone number
Why does my call sound broken up?
This can be caused by a variety of problems. The most common is
poor Internet connection quality or lack of bandwidth.
Very often what is sold as a "High Speed" or "Broadband"
connection is not up to the task of transmitting voice packets in
a timely or reliable manner. Problems such as high latentcy (slow
delivery of packets) or packet loss (actual dropping of voice data)
can be seen from time to time on some provider's networks. These
problems will be heard by you on your IP phone call long before
they are noticed for other data activities like checking email or
web browsing.
To track down where the problem is coming from, you can use packet
tracing software to reveal network bottlenecks and get them reported
to your ISP. We recommend a product called "Ping Plotter".
You can download a free trial version at http://www.pingplotter.com
What does "PSTN" mean?
PSTN is an acronym for Public Switched Telephone Network.
It is the traditional telephone system that the world has been using
for decades to make phone calls.
As a Sky Voice subscriber, you DO NOT need to use a "bridge"
between VoIP and PSTN platform to access any PSTN line from your
IP Phone
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