Lucent Technologies 6000 Manuale Utente

Pagina di 586
Configuring WAN Access
Configuring T1 lines
MAX 6000/3000 Network Configuration Guide
 3-17
Encoding=AMI
Send Disc=0
Overlap Receiving=Yes
Enabling a robbed-bit PBX with PRI access lines (PRI-to-T1 conversion)
If your WAN uses ISDN PRI signaling on its T1 lines, a MAX unit can convert the signaling to 
standard T1 for use with a PBX. With this configuration, the MAX emulates a WAN switch, 
such as a Lucent 5ESS, connected to the PBX.
Note:
In most cases, you cannot use this feature in combination with digital modems. Also, 
the PBX must use two-state inband with DTMF signaling and must support Senderized (en 
bloc) digital transmission, because the MAX unit has a preset time limit on received dialing 
digits. In addition, the called number should be available from the switch. That is, you need 
Dialed Number Identification Service (DNIS) or a called number information element. 
On a MAX 6000 unit, T1 PBX must connect to line 2 of the unit’s second slot. That is, you 
must configure line 2 in a profile in the 20-000 Net/T1 > Line Config menu. To configure the 
Line Config profile that will support the PBX, set the 2nd Line parameter to Trunk. Then, open 
the subprofile for the second line connected to the PBX and set the following parameters:
Parameter
Specifies
Sig Mode
The signaling mode. Select PBX T1.
Rob Ctrl
The robbed-bit call-control mechanism.
T1-Pri:PRI # Type
Type of calls placed by the PBX. Ask your PRI provider about 
which settings are available to you.
T1-PRI:NumPlanID
NumberPlanID, needed by the carrier’s switch to properly 
interpret a dialed number. Ask your PRI provider about which 
settings are available to you.
PBX Type
The type of service the PBX expects on its T1 line. In most 
installations the PBX expects voice-service calls with call 
progress tones. The Data setting does not supply call progress 
tones or information messages to the user.
Ans Service
The type(s) of call(s) that should be converted from PRI to 
robbed-bit T1 signaling. Most installations select Voice. With this 
setting, the unit converts voice-service calls arriving on the PRI 
line to T1 voice calls for the PBX. Data-service calls undergo 
normal incoming-call routing. They are not converted and sent to 
the PBX. 
Note that with Ans Service set to Voice, you cannot configure the 
line for both PBX T1 support and digital modem operation, 
because the voice-service modem calls are diverted to the PBX 
and never reach the digital modems.
Ans #
A telephone number to be used for routing incoming calls from 
the first T1 line to the second T1 line. Most installations leave this 
setting blank. If specified, it can be an add-on number.
Delete Digits and Add 
Number
Digits to be deleted and added, respectively, to convert a number 
dialed through the PBX to ISDN PRI format.