SS-16 VoIP-2-GSM USER MANUAL
DOC. NO: SS-16-14 (REV. 02)
Page 80 of 84
methods are the Point-to-Point Tunneling Protocol (PPTP) developed by Microsoft
and generic routing encapsulation (GRE), developed by Cisco Systems.
ISP
(Internet Service Provider) - An ISP is a business that allows individuals or
businesses to connect to the Internet. Users log on to the Internet using an account
with an ISP or Internet Service Provider. ISPs can serve IP addresses dynamically, or
assign static (fixed) IP addresses to individual computers. In this case, the Internet
provider is the operator of the 3G mobile network.
LAN
- Acronym for local area network (computer network that spans a relatively small
area). A group of computers, workstations and associated devices that share a
common communications line or wireless link and are located in a relatively limited
area, typically inside the same office building. The communications link that
interconnects these computers allows any device of the network to interact with any
other from the same network. The devices that compose a local network
(workstations, personal computers and peripherals) are called nodes and typically
share the resources of a single processor or server. This server has resources
(applications, processing and data storage capabilities) that are shared in common by
multiple computer users. The LAN can be connected to other local networks over any
distance via phone lines, wireless links or other connections, and the system of LANs
connected in this way is called a wide-area network (WAN). The LAN may also be
connected to the Internet through a gateway. SS-16 VOIP-2-GSM equipment is
connected in a local network through its Ethernet port.
LCR
– Acronym for
Least Cost Routing
- Refers to the method for delivering calls
according to the lowest cost carrier. Often more than one carrier can compete to
deliver a call and depending on their relative charges, the LCR Switch (which contains
a database of our carriers, destinations and charges) will connect the call via the
cheapest carrier. This process means searching for the optimum traffic routes via one
or several traffic routings enabling a cost reduction. SS-16 VOIP-2-GSM implemnts
LCR functions, since it analyse incoming calls and sends them to the route or towards
the GSM module which assures the minimum costs.
MAC
Address (Media Access Control) - A MAC address is the hardware (physical)
address of a device connected to a network.
All network interface controllers must have a hard-coded and unique MAC address.
The MAC address is applied at the factory and uniquely identifies network hardware,
such as an Ethernet cards, modems or wireless adaptors on a LAN or WAN. The first
part of the address is unique to the company that produced the device, and beyond
that it is a sequence of digits unique to a single device manufactured by a company.
SS-16 IP features a single Ethernet port, so it will have one MAC.
SNTP -
Acronym for
S
imple
N
etwork
T
ime
P
rotocol. Simplified version of NTP,
Internet standard protocol used to update the real-time clock in a computer. It assures
accurate synchronization to the millisecond of computer clock times in a network of
computers.NTP is very useful in packet-switched, variable-latency data networks. In
case of SS-16 VOIP-2-GSM, if you want to measure the performances of the network,
you need accurate, universal time-stamps for the data packets.
NTP runs as a continuous background client program on a computer and it sends
periodic time requests to servers, obtaining server time stamps and using them to
adjust the client's clock. NTP uses UDP port 123 as its transport layer. It is designed
particularly to resist the effects of variable latency. There are numerous primary and
secondary servers in the Internet that are synchronized to the Coordinated Universal
Time (UTC) via radio, satellite or modem. For more information, visit
www.ntp.org
.
Routing
-The process of determining and prescribing the path or method to be used
for establishing connections and forwarding data packets. In a network, a 'routing
switch' is a device that combines the functions of a switch, which forwards data by
looking at a physical device address, and a router, which forwards packets by locating
a next hop address. Each host with a router in the network uses the routing table
information to determine the next host to route a packet to for a specified destination.
SS-16 VOIP-2-GSM performs as a router for the wired or wireless local network
where it is connected. It can perform both static routing (with fixed, pre-defined
routes) and dynamic routing. Dynamic routing is more complex than static routing, but
it provides several benefits. It ensures scalability and adaptability. The routes are
