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Operation
3-273160-A2-GB21-50 January 1997
Line 1 displays the 24 channels for the DTE
Drop/Insert (DSX-1) interface, while Line 2
displays what is allocated to the DS0 channel
shown in Line 1.
F1
D1 D2 D3
–N1N2
F2
F3
Allocating Data Ports
By using the configuration options, assign a specific
port to DS0 channels on either the network interface or
the DTE Drop/Insert (DSX-1) interface. The following
methods are available to assign DS0 channels to the port:
Block – Allows a block of contiguous channels to be
assigned by specifying a data port rate and an initial DS0
channel (the first DS0 channel in a block of DS0
channels). The number of channels assigned is determined
by the port rate. Only those initial DS0 channel numbers
that provide enough bandwidth (based on the port’s data
rate) are displayed on the screen. These channels are
automatically assigned to the destination T1 interface
(Network or DTE Drop/Insert) when the initial DS0
channel is selected.
ACAMI (Alternate Channel Alternate Block
Inversion) – Allows a block of contiguous channels to be
assigned by specifying a data port rate and an initial DS0
channel (the first DS0 channel in a block of DS0
channels). However, with ACAMI, the number of
channels assigned is twice the number needed for the port
rate. This is because with ACAMI, every alternate DS0
channel (starting with the n+1 DS0 channel), does not
carry data from the port, but instead always transmits and
receives all ones.
Chan (Channel) – Individually selects the DS0
channels to allocate to the data port. The data port rate is
automatically determined based on the number of
channels selected.
Once a port is selected, you have access to the
configuration options to complete the port allocation
procedure. These configuration options enable you to,
• Assign the selected port to the desired interface.
• Select the desired method for channel allocation.
• Select the port rate and starting channel (if the
allocation method is block or ACAMI).
• Select the specific channels (if the allocation
method is by individual channel).
To select the data port,
1. From the top-level menu screen, select Cnfig.
2. Select the configuration option set to be copied
into the Edit area by using the appropriate
Function key. Use the scroll keys, if necessary.
3. Select Edit.
4. From the Edit screen, press the
key until the
Chan selection appears on the screen.
5. Select Chan.
F1
Edit:DTE
Port NET Chan
F2
F3
6. From the Channel Config screen, press the
key to scroll the ports onto the screen.
7. Select the desired port by pressing its
corresponding Function key.
F1
Channel Config:
Prt1 Prt2 Prt3
F2
F3