Lucent Technologies 6000 User Manual

Page of 586
4-10
MAX 6000/3000 Network Configuration Guide
Configuring Individual WAN Connections
The Answer profile
PAD Options
A PAD is an asynchronous terminal concentrator that enables several terminals (or other 
asynchronous devices) to share a single network line. The PAD assembles data from terminals 
into packets for transmission to a X.25 network, and disassembles incoming packets from the 
X.25 network into a separate data stream for each terminal. In addition to this multiplexing 
function, the PAD provides a nearly error-free connection. The MAX unit uses the following 
parameters in Answer > PAD Options only if the incoming call is unauthenticated:
N2 Retran Count
Retry limit—the maximum number of times the MAX unit can 
retransmit a frame on an X.75 connection when the T1 Retran Timer 
expires.
T1 Retran Timer
Maximum amount of time in ticks (1 tick=1/18th of a second) the 
transmitter should wait for an acknowledgment before initiating a 
recovery procedure. 
Frame Length
Maximum number of bytes allowed in the information field by V.120 
or X.75 terminal adapters that call the unit. 
Parameter
Specifies
Parameter
Specifies
X.25 Prof
Name of an X.25 profile to use for this connection. 
X.3 Param Prof
Default X.3 profile for setting up the PAD for this connection. Note 
that a user can specify a profile using a PAD command. In this case, 
the profile specified on the command line overrides this default for the 
length of the current session.
VC Timer Enable
Virtual Call Establishment (VCE) timer on a per-user basis. The VCE 
timer specifies the number of seconds to maintain a connection to a 
character-oriented device (such as the terminal server) that has not 
established a virtual call.
Auto-Call X.121 
Addr
 X.25 host to call immediately when an X.25/PAD session is 
established via this Answer profile. If Auto-Call X.121 Addr specifies 
an address, the PAD session can begin automatically. Otherwise, the 
unit displays the terminal-server prompt, at which the user can issue 
the pad command to begin a session. 
Reverse Charge
Whether or not the call packet should include an X.25 reverse charge 
request facility element.
RPOA
Set of Recognized Private Operating Agency (RPOA) user facilities to 
use in the next call request. The RPOA facilities provide the data 
network identification code for the requested initial RPOA transit 
network in the form of four decimal digits.