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WELCOME
Thank you for purchasing
DAG Serial
. The affordable, features rich Analog Telephone Adaptor. It
features the rich audio quality, a broad range of voice codecs.
This manual will help you learn how to operate and manage your
DAG Serial
Analog Telephone
Adaptor and make the best use of its many upgraded features including simple and quick installation, and
direct IP-IP Calling. This
DAG Serial
is very easy to manage and configure, and is specifically designed
to be an easy to use and affordable VoIP solution for both the residential user and the residential user and
the tele-worker.
GLOSSARY OF TERMS
ADSL
Asymmetric Digital Subscriber Line: Modems attached to twisted pair copper wiring that transmit
from 1.5 Mbps to 9 Mbps downstream (to the subscriber) and from 16 kbps to 800 kbps upstream,
depending on line distance.
AGC
Automatic Gain Control is an electronic system found in many types of devices. Its purpose is to
control the gain of a system in order to maintain some measure of performance over a changing
range of real world conditions.
ARP
Address Resolution Protocol is a protocol used by the Internet Protocol (IP) [RFC826], specifically
IPv4, to map IP network addresses to the hardware addresses used by a data link protocol. The
protocol operates below the network layer as a part of the interface between the OSI network and
OSI link layer. It is used when IPv4 is used over Ethernet
ATA
Analogue Telephone Adapter. Covert analogue telephone to be used in data network for VoIP, like
allywll
DAG1000
series products.
CODEC
Abbreviation for Coder-Decoder. It's an analog-to-digital (A/D) and digital-to-analog (D/A)
converter for translating the signals from the outside world to digital, and back again.
CNG
Comfort Noise Generator, generate artificial background noise used in radio and wireless
communications to fill the silent time in a transmission resulting from voice activity detection.
DATAGRAM
A data packet carrying its own address information so it can be independently routed from
its source to the destination computer
DECIMATE
To discard portions of a signal in order to reduce the amount of information to be encoded or
compressed. Lossy compression algorithms ordinarily decimate while sub-sampling.
DNS
Short for
D
omain
N
ame
S
ystem
(or
S
ervice
or
S
erver
), an Internet service that translates
domain
names
into IP addresses
DSP
Digital Signal Processor. A specialized CPU used for digital signal processing. Allywll products all
have DSP chips built inside.
DTMF
Dual Tone Multi Frequency. The standard tone-pairs used on telephone terminals for dialing using
in-band signaling. The standards define 16 tone-pairs (0-9, #, * and A-F) although most terminals
support only 12 of them (0-9, * and #).
FXO
Foreign eXchange Office. An FXS device can be an analog phone, answering machine, fax, or
