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Oceniono. / 5. Na podstawie oceny klientów
FRADSWITCH-8A, FRADSWITCH-16A, FRADSWITCH-24A
10
Figure 2-6. Fradswitch-8A connecting HDLC devices over X.25 or Frame Relay.
2.3 X.25 Link Features
When the Fradswitch links are configured for X.25, they operate synchronously at data rates up to
2.15 Mbps. The links interface is DTE or DCE, and the data rate is determined by the external clock rate.
You can order the Fradswitch with interfaces for RS-232/V.24, X.21, or V.35.
The links packet size supported by the Fradswitch is configurable (up to 4096 bytes), and the frame window
range is selectable in the range of 1 through 7 (for modulo-8 operation), or 1 through 127 (for modulo-128
or extended operation).
Fradswitch links fully support switched virtual circuits (SVC) and permanent virtual circuits (PVC). The links
protocol is LAPB per ITU X.25, and the Fradswitch can act as either DTE or DCE with respect to the layer 2
and layer 3 protocols.
2.4 Frame Relay Link Features
When a link is configured for Frame Relay, packets are processed as follows. If the Fradswitch is located at
the user side (acting as an end device), the received Frame Relay packets are converted into async or X.25
format and are routed to the appropriate port. (See Figure 2-4.) If the Fradswitch is located at the network
side, the received Frame Relay packets are routed to another Frame Relay link. (See Figure 2-5.)
Acting as a FRAD (Frame Relay Assembler/Disassembler), the Fradswitch can either convert the
asynchronous data into X.25 packets and concentrate the packetized data stream over the Frame Relay
link, or directly run asynchronous data over Frame Relay.
FRADSWITCH-8A
FRADSWITCH-8A
ETHERNET
BRIDGE
BRIDGE
TRANSPARENT
HDLC
X.25 OR
FRAME
RELAY
X.25 OR
FRAME
RELAY
NETWORK
X.25 OR
FRAME
RELAY
TRANSPARENT
HDLC
ETHERNET
- CUSTOMER 1
- INFORMATION 1
- FCC AND IC STATEMENTS 2
- ELECTRICAL SAFETY STATEMENT 3
- INSTRUCCIONES DE SEGURIDAD 3
- Contents 4
- 1. Specifications 5
- CHAPTER 1: Specifications 6
- 2. Introduction 7
- CHAPTER 2: Introduction 10
- 2.3 X.25 Link Features 11
- 2.4 Frame Relay Link Features 11
- 2.10 ITU Facilities 13
- 2.12 Configuration Features 14
- 2.16 Remote System Monitoring 16
- 2.18 Diagnostic Features 18
- 3. Installation 19
- CHAPTER 3: Installation 20
- WARNING! 21
- 3.5 Cable Connections 25
- 4. Operation 27
- CHAPTER 4: Operation 28
- MAIN C MAIN B MAIN A 29
- 4.2 Operating the Fradswitch 30
- 5. Quick Start 31
- CHAPTER 5: Quick Start 32
- RADSWITCH LINK CONFIGURATION 33
- 5.3 STM Protocol 35
- 5.5 Management Procedures 39
- 5.6 Calling Procedures 39
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