Inter-Tel 3000
Administrator’s Manual
108
T1 PRI Channel Programming
If T1 PRI is programmed the default settings are as follows: -
The ISDN Signalling Protocol (Q931) is set to National ISDN 2.
The Line Build Out is set to -7.5 dB.
The Line Gain is set to High at -3dB.
Programming the ISDN Signalling Protocol (Q931) on the T1 PRI
Two ISDN signalling protocols are supported, National ISDN 2 and AT&T 5ESS.
EXCHANGE EQUIPMENT (TELCO)
TRANSLATION PROTOCOL
INTER-TEL 3000 ISDN SWITCH TYPE
AT&T 5ESS (AT&T Custom) AT&T 5ESS (Custom)
AT&T 4ESS (AT&T Custom) AT&T 5ESS (Custom)
NORTEL CUSTOM (DMS Exchanges) Note 1 NATIONAL ISDN 2
NATIONAL ISDN 1 (DMS Exchanges) Note 1 NATIONAL ISDN 2
NATIONAL ISDN 2 NATIONAL ISDN 2
Note: The DMS Exchange equipment or DMS Central Office (ONLY) must have the L1 flag under the
trunk sub group programmed to YES to avoid issues.
• From the programming extension, press the PROGRAM key.
• Press the Scroll Down key () until “System Programming” is displayed.
• Select “System Programming”.
• Enter the System Programming Password and select “Lines”.
• Press the Scroll Down key () until “T1 (RBS) or PRI (ISDN)” is displayed.
• Select the “PRI (ISDN) ” option.
• Select the “Protocol (Q931) ” option.
• When Protocol (Q931) is selected the menu updates to show the two options “National ISDN 2” or
“AT&T 5ESS”.
• Select the required option.
Programming the Line Build-Out for PRI
The Line Build-Out can be set at 0dB, -7.5dB, -15dB or -22dB.
• From the programming extension, press the PROGRAM key.
• Press the Scroll Down key () until “System Programming” is displayed.
• Select “System Programming”.
• Enter the System Programming Password and select “Lines”.
• Press the Scroll Down key () until “T1 (RBS) or PRI (ISDN)” is displayed.
• Select the “PRI (ISDN) ” option.
• Select the “Line Build Out” option.
• Select the required option from the display.
The default setting is -7.5 dB.
Note: This option is presented for both the T1 (RBS) and the PRI programming.
Programming the Line Gain for PRI
• From the programming extension, press the PROGRAM key
• Press the Scroll Down key () until “System Programming” is displayed.
• Select “System Programming”.
• Enter the System Programming Password and select “Lines”.
• Press the Scroll Down key () until “T1 (RBS) or PRI (ISDN)” is displayed.
• Select the “PRI (ISDN) option.
• Select the “Line Gain” option.
• The menu updates to show the available options.
• Select either “Low”, “Medium” or “High”. A solid diamond indicates the current setting.
