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Configuring WAN Access
Configuring T1 lines
Connecting to the Central Office switch
To configure a line's connection to the Central Office switch, open the Net/T1 > Line Config >
Line Config profile > Line N subprofile for the line and set the following parameters:
Parameter
Sig Mode
NFAS ID Num
Rob Ctl
Switch Type
Framing Mode
Front End
Encoding
Length
Buildout
Clock Source
Collect DNIS/ANI
Send Disc
For detailed information about each parameter, see the MAX Reference.
Signaling mode
You must configure the signaling type (Sig Mode) for each T1 line.
If you set Sig Mode to ISDN_NFAS, you can also establish an interface ID or NFAS ID
number for this type of signaling. You must specify a different interface ID for each NFAS
line.
3-8
Specifies
The signaling type for the line.
An interface ID number for a line using Non-Facility Associated
Signaling (NFAS). Each NFAS line must have a different ID number.
The robbed-bit call-control mechanism that the MAX unit uses for
inband signaling.
Type of switch (carrier specific) providing the ISDN service.
Physical-layer frame format of the T1 line.
Type of interface used on the T1/PRI port. Select CSU (the default) if
you plan to use the MAX unit's internal CSU, or select DSX if you
plan to connect the port to other equipment that provides the interface
to the WAN, (an external CSU, for example), and disable the internal
CSU.
Type of encoding that the line uses at the physical-link layer.
The distance between the CSU and the MAX unit. Applies to a MAX
using external CSUs only.
Amount of attenuation, in decibels, to apply to the internal CSU.
Consider specifying a value if the MAX is using an internal CSU too
near a repeater. For additional information, consult your carrier.
That the line can (Yes) or cannot (No) be used as the clock source for
timing synchronous transmissions between the sending and the
receiving device. A MAX unit only has one clock source. The first line
that comes up is the clock source for all the lines. If you set this
parameter to No, the MAX uses its internal clock.
That DNIS and CLID information from the switch are (Yes) or are not
(No) available for authentication and accounting. Applies to inband
signaling only. With the Yes setting, the Digital Signal Processor
(DSP) decodes the calling and called DTMF digits.
Number of seconds the MAX unit waits, from the time the call is
presented, before clearing the call.
MAX 6000/3000 Network Configuration Guide
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