SonicWALL 5.8.1 Manuel D’Utilisation
VoIP Overview
812
SonicOS 5.8.1 Administrator Guide
CODECs
SonicOS supports media streams from any CODEC - Media streams carry audio and video
signals that have been processed by a hardware/software CODEC (COder/DECoder) within the
VoIP device. CODECs use coding and compression techniques to reduce the amount of data
required to represent audio/video signals. Some examples of CODECs are:
signals that have been processed by a hardware/software CODEC (COder/DECoder) within the
VoIP device. CODECs use coding and compression techniques to reduce the amount of data
required to represent audio/video signals. Some examples of CODECs are:
•
H.264, H.263, and H.261 for video
•
MPEG4, G.711, G.722, G.723, G.728, G.729 for audio
VoIP Protocols that SonicOS Does Not Perform Deep Packet Inspection on
SonicWALL security appliances do not currently support deep packet inspection for the
following protocols; therefore, these protocols should only be used in non-NAT environments.
following protocols; therefore, these protocols should only be used in non-NAT environments.
•
Proprietary extensions to H.323 or SIP
•
MGCP
•
Megaco/H.248
•
Cisco Skinny Client Control Protocol (SCCP)
•
IP-QSIG
•
Proprietary protocols (Mitel’s MiNET, 3Com NBX, etc.)