Bay Networks 6300, Инструкция к добавке

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Chapter 3 Configuring the PRI Interface, Global Ports,
Remote Annex 6300 Supplement to the Remote Annex Administrator’s Guide for UNIX
Book A
Port Handling
Unlike other Remote Annexes, the Remote Annex 6300 uses only two external
physical interfaces – an Ethernet port (referred to as en0) and the PRI interface.
However, the RA 6300 assigns internal ports to match the three types of data
ISDN can carry on a B channel. You do not explicitly set port parameters for
these internal ports. Instead, you configure global port parameters (call defaults)
and Session Parameter Blocks (SPBs), as follows:
• The RA 6300 comes with a set of global port parameters set to
default values. The RA 6300 applies these parameters to the
appropriate internal port while a call is active on that port. You
can override the global port parameter defaults by resetting them
using na or admin.
• The same set of port parameters that you can modify globally
can also be reset for one PRI call or subset of calls. To do this,
you include the parameter definition in a Session Parameter
Block (SPB) that handles the PRI call(s). Parameter values set in
SPBs override the global settings. See
ISDN Sessions and
Session Parameter Blocks (SPBs) on page 3-64.
At least one SPB must be defined in order for the
RA 6300 to handle any PRI calls.