Lucent Technologies 6000 - Manual (Page 53)

Configuring WAN Access
Configuring T1 lines
MAX 6000/3000 Network Configuration Guide 3-9
If you set Sig Mode to Inband signaling (also called robbed-bit signaling), you must set the
Rob Ctl parameter to specify a call-control mechanism. For additional information, consult
your carrier.
Switch-specific settings
Set the Switch Type parameter to specify the network switch providing ISDN service on the
T1/PRI line. The carrier supplies the setting. You must also specify the physical layer frame
format for the T1 line by setting the Framing Mode parameter.
Front-end settings
The Front End parameter specifies the type of Channel Service Unit (CSU) used for the T1
line. Your carrier can assist you in setting the Encoding parameter. This parameter specifies the
Layer-1 line encoding used for physical links, which affects the way the digital signals on the
line represent data. Set the Length parameter if you are using an external CSU. If using the
internal CSU, ask your carrier about a value, if any, for the Buildout parameter.
Monitoring line quality
The telephone company uses a Facilities Data Link (FDL) protocol to monitor the quality and
performance of T1 lines. In a line’s subprofile, set the FDL parameter to specify the protocol.
If you are not sure which FDL protocol to specify, your telephone carrier can tell you.
Supporting PBX connections
In a MAX 3000 unit’s T1 slot, or in either T1 slot of a MAX 6000, you can connect line 2 to a
PBX. The unit can act as a switch, moving an incoming call from line 1 to line 2. You can
assign the PBX a number for dialing out through the MAX unit. If the second line’s signaling
mode is PBX T1, you can route calls to the PBX. For all calls received by the PBX, you can
specify a sample count to provide accurate tone detection and decoding. To support PBX
connections, you set the following parameters in the Net/T1 > Line Config > Line Config
profile > Line N subprofile:
Parameter Specifies
PBX Type The type of signaling to be used with the PBX on line 2.
Delete Digits The number of digits to be deleted from the beginning of the dialed
number when changing the number so that the PBX on line 2 can dial out
through the MAX unit.
Add Number A series of digits to be added to the beginning of the dial-out telephone
number after the digits specified by Delete Digits have been removed.
Ans # A telephone number to be used for routing calls received on the first T1
line to the device terminating the second T1 line when the second line’s
signaling mode is PBX T1. The answer number is one of the unit’s
telephone numbers. (For more information, see “Configuring inbound
calls” on page 3-59 and “Configuring outbound calls” on page 3-69.)