
Configuring Synchronous Services
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LAPB Parameters
This section describes how to edit LAPB parameters using Site Manager. It covers
the following topics:
• Enabling or Disabling LAPB Services
• Setting the Station Type
• Setting the Control Field
• Setting the Maximum N1 Frame Size
• Setting the Window Size
• Setting the Maximum N2 Retry Count
• Setting the Maximum T1 Acknowledge Timer
• Setting the Maximum T2 Acknowledge Timer
• Setting the Maximum T3 Disconnect Timer
• Setting the Link Setup Action
• Enabling or Disabling Test Exchange Identification (XID) Frames
• Enabling or Disabling Receiver Ready (RR) Frames
• Selecting the Local Command or Response Address
• Viewing the WAN Protocol
When you edit an Octal Sync link module line, or any synchronous line on Nortel
Networks AN, ANH, ARN, ASN, or System 5000 routers, the router
automatically configures the LAPB protocol if you configure a circuit for the X.25
protocol. The Edit SYNC Parameters window for these lines includes an
additional button for editing LAPB parameters. Click on the LAPB button to
display the Edit LAPB Parameters window (Figure 2-3)
.
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