66D-Link DIR-655 User Manual
Section 3 - Conguration
RTSP:
SIP:
Allows applications that use Real Time Streaming Protocol to receive
streaming media from the Internet. QuickTime and Real Player are some
of the common applications using this protocol.
Allows devices and applications using VoIP (Voice over IP) to communicate
across NAT. Some VoIP applications and devices have the ability to discover
NAT devices and work around them. This ALG may interfere with the
operation of such devices. If you are having trouble making VoIP calls, try
turning this ALG o.