Serial port configuration task list
170
SmartWare Software Configuration Guide
14 • Serial port configuration
The fragmentation size depends on the available bandwidth, the chosen codec, and its packet length:
•
The less bandwidth available per call, the smaller the fragment size has to be configured.
•
The shorter the voice packets, the smaller the fragment size can be configured.
•
The smaller the fragment size, the bigger the overhead for long data packets.
The following table shows the minimum fragment size depending on the configured codec and its packet
length without fragmenting the voice packets:
Entering Frame Relay PVC configuration mode
The permanent virtual circuit (PVC) is a virtual circuit that is permanently established. PVCs save bandwidth associ-
ated with circuit establishment and tear down in situations where certain virtual circuits must exist all the time.
The Frame Relay network provides a number of virtual circuits that form the basis for connections between
stations attached to the same Frame Relay network.
The resulting set of interconnected devices forms a private Frame Relay group, which may be either fully inter-
connected with a complete mesh of virtual circuits, or only partially interconnected.
In either case, each virtual circuit is uniquely identified at each Frame Relay interface by a Data Link Connection
Identifier (DLCI). In most circumstances, DLCIs have strictly local significance at each Frame Relay interface.
Assigning a DLCI to a specified Frame Relay sub interface is done in the PVC configuration mode. The DLCI
has to be in the range from 1 to 1022.
Note
A maximum of eight PVCs can be defined.
This procedure describes how to enter the PVC configuration.
Mode: Frame Relay
Example:
Entering Frame Relay PVC configuration mode
Codec (bytes)
Packet Period (ms)
Minimum Fragment Size
G.729
10
52
G.729
20
62
G.729
30
72
G.723
30
66
G.723
60
90
G.723
90
114
G.711
10
122
G.711
20
202
G.711
30
282
Step
Command
Purpose
1
node(frm-rel)[
slot/port
]#pvc
dlci Enters the PVC configuration mode by assigning a DLCI number
to be used on the specified sub interface
Содержание SmartWare R.3.20
Страница 553: ...553 Appendix A Terms and definitions Chapter contents Introduction 554 SmartWare architecture terms and definitions 554...
Страница 559: ...559 Appendix B Mode summary Chapter contents Introduction 560...
Страница 566: ...566 Appendix D Internetworking terms acronyms Chapter contents Abbreviations 568...
Страница 571: ...571 Appendix E Used IP ports available voice codecs Chapter contents Used IP ports 573 Available voice codecs 574...