4 Configurations on Web Interface
DAG1000-1S/2S/4S User Manual
Copyright©2011-2017 Dinstar
46
Range
[ ]
One or more DTMF symbols enclosed in the [], but
only one DTMF symbol can be selected
Range
()
One or more expressions enclosed the
(), but only one can be selected
Separator
|
Separate expressions or DTMF symbols.
Subrange
-
Two digits separated by hyphen (-) which matches any
digit between and including the two digits.
Wildcard
x
Matches any digit of 0 to 9
Modifiers
.
Matches 0 or more times of the preceding element
Modifiers
?
Matches 0 or 1 times of the preceding element
Examples of DigitMap Syntax
(13 | 15 | 18)xxxxxxxxx
Matches the phone numbers with stating digits as 13,
15 or 18 and the left nine digits as any of 0 to 9
[2-8] xxxxxx | 13xxxxxxxxx
Matches the phone numbers starting with any digit of 2
to 8 and the left six digits as any of 0 to 9; or matches
the phone numbers starting with 13 and the left nine
digits as any of 0 to 9
4.7.6
System Parameter
System parameters include NAT traversal, NTP, daylight saving time, daily reboot time, web
parameter, telnet parameter and remote management.
NAT Traversal (Network Address Translator Traversal)
is a computer networking
technique of establishing and maintaining Internet protocol connections across gateways that
implement network address translation (NAT). NAT breaks the principle of end-to-end
connectivity originally envisioned in the design of the Internet.
STUN
（
Simple Traversal of UDP over NATs
）
is a lightweight protocol that allows
applications to discover the presence and types of NATs and firewalls between them and the
public Internet. It also provides the ability for applications to determine the IP addresses
allocated to them by the NAT. STUN works with many existing NATs, and does not require
any special behavior from them. STUN doesn’t support TCP connection and H.323.
NTP (Network Time Protocol
）
is a computer time synchronization protocol.
