User manual

http://www.DBL.com FXS+FXO Gateway Series
45
This style makes the special dial-tone together with talk-tone and transfer out without any
treatment. So Inband only has one way to set DTMF signaling.
2) Outband DTMF
This style uses special methods and transfers the dial-tone to certain the correctness. The
special methods are the called protocol, such as RFC2833.
D) QOS Signaling
QOS is network quality of service and ability of higher priority service that network
supports, including dedicated broadband、control and delay jitter、packet loss rate
improvement and so on. This option can label for QOS which is designated by call
signaling packets, in order to improve the network quality of service.
E) Signaling Encryption
a ) None: Not encrypted.
b) RC4: This is a variable key length stream encryption algorithm clusters, its S-box is
random, generally 256 bytes.
c) Fast: a long delay for high-speed networks, TCP Congestion Control Protocol，require
server-side support.
d) VOS: For VOS users.
e) AVS: For AVS users.
f) N2C: For N2C users.
g) ECM: For ECM users.
h) ET263: For ET263 users.
F) NAT Signaling Penetration.
Special configurations please refer to firewall.
3.3.3.3.5. Media Advanced Configuration
Media Advanced Configuration Aimed at the gateway RTP media stream part of the
advanced configuration options, click “Media” in the “call setting”.
A) KTP Port (range)
Use to designate the UDP of Real-Time Media Transfer Protocol (RTP), used with the
router’s port mapping.
Notes: The terminal use several pairs of RTP, its value is the port range, such as