Technical information

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The following are some common terms used in our Digital Voice service for your easy reference.
 
 Digital Voice Global is StarHub’s Voice-over-IP (VoIP) service to residential customers.
 This is the cable outlet on the wall, which offers a means of connection to StarHub’s
cable network.
 This is a device that allows broadband data access (such as to the Internet) via StarHub’s cable
network. A cable modem typically has two connections, one to the cable wall outlet and the other
to a computer.
 A VeCM has all the functionalities of a cable modem but has additional telephony
capabilities. It allows a user to have data access (such as the Internet) as well as the ability to
make voice calls simultaneously.
iaD IADisashortformfor“integretedaccessdevice”.Itallowsausertomakevoicecallswhenitis
connected to any broadband network.
 Value Added Services are value-added telephony features like Call Waiting, Caller ID Presentation
etc. A separate subscription and activation charge is required.
 This is a service which allows a customer to transfer their existing SingTel’s residential telephone
number over to StarHub’s Digital Voice Global.
 Goldennumbersaretelephonenumberswithspecialsequencessuchas“2828”etc.Thereis
an additional charge for golden numbers.
 Like golden numbers, silver numbers are also telephone numbers with special number sequences
but they cost less than golden numbers.
 Short form for Registered Jack-11, this is a two-wire connector widely used to connect telephone
equipment. It looks similar to the RJ-45 connector, but is narrower.
 Short form for Registered Jack-45, this is an eight-wire connector used commonly to connect
computers onto a local area network (LAN), especially Ethernet networks.
 A user would usually connect a standard or cordless telephone set directly to the phone jack of
the IAD to make voice calls. Additional internal wiring is required if the user needs to place the
telephone set at another location.
 Upstream refers to the packets transferred from your end device, e.g. IAD, delivered through the
Internet, to another IAD/telephone at the other end. When you have a conversation, the voice
quality heard by the other party when you speak is dependent on the upstream bandwidth, while
the voice quality you heard is dependent on the downstream bandwidth. Typically, broadband
service providers provide varying upstream/downstream speeds.
 PPPoE i.e Point-to-Point Protocol over Ethernet is a network protocol for encapsulating PPP
frames in Ethernet frames. It offers standard PPP features such as authentication, encryption and
compression. This protocol is being used by many DSL/ADSL carriers for connecting high-speed
modems to the service provider.
 It is a part of the network sited between the (public) Internet and an internal network. A firewall or
a router usually protects this zone with network traffic filtering capabilities whilst enabling external
access to information.
Glossary
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