3Com T1/PRI manual Any changes made will take effect immediately

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Configuring Span Lines 1 and 2 2-9

Configure the Short Haul NIC to handle the following cable lengths:

■0 – 133 ft.

■134 – 266 ft.

■267 – 399 ft.

■400 – 533 ft.

■534 – 655 ft.

If there is no Short Haul NIC installed behind the T1/PRI NAC, the main menu’s current setting for this option is not applicable.

Menu Option 16 Allowing for ALERTING message in response to SETUP request

When the T1/PRI NAC receives a SETUP request from the TELCO, it typically responds with a CALL_PROCEEDING and CONNECT message. Allowing an ALERTING message replaces the CALL_PROCEEDING message.

Use the ALERTING response message to increase the time-out length (from the Telco’s perspective) and allow the network side more time to answer a call.

The ALERTING message is in accordance with the Q.931 standard.

Any changes made will take effect immediately.

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Contents Version Number Dual T1/PRIDual T1/PRI 3Com Corporation 5400 Bayfront Plaza Santa Clara, California Contents Configuring the span line’s interface ID Dual T1/PRI Maintenance Trouble Clearing Page Finding Specific About this ReferenceInformation This Reference If you are looking for Turn toConventions This table lists conventions used throughout this referenceIcon Description Accessing Supported FeaturesOverview User InterfaceCallout # Configuring Span Dual T1/PRI ConfigurationLines 1 Interface UI console’s main menuMenu Option 1 Configuring the span line’s framing mode Framing mode selects the T1 formatMenu Option 2 Configuring the span line’s line coding Menu Option 4 Configuring the span line’s jitter attenuation This diagram represents this processMenu Option 7 Configuring the span line’s idle bit pattern Menu Option 6 Configuring for the Telco’s switch typeDS0#sl#/ch# Menu Option 8 Mapping the span line’s DS0s to chassis modemsMenu Option 10 Configuring the span line’s interface ID Menu Option 9 Configuring the span line’s signaling channelMenu Option 11 Configuring span level call-type blocking Menu Option 12 Configuring span level cause codesMenu Option 13 Configuring the DS0 level call-type blocking Cause Code Type Default Cause Code Value DescriptionFollowing types of cause codes are supported Menu Option 14 Configuring the DS0 level service state Menu Option 15 Configuring the Short Haul NIC line lengthDSS DS0#, DS0#, DS0#-DS0#,... for multiple DS0s Any changes made will take effect immediately Inbound Call ConfiguringRouting Menu Option 1 Selecting a Gateway to process digital callsPHIDX#ph=PH#,ct=x Configuring inbound call routingIDP# Idpt Use the following syntax to assign a pool type to a pool IDSaved to Nvram will be restored Menu Option 1 Saving configuration changes to NvramCard Menu Option 9 Allowing ISDN-GWC terminationMenu Option 3 Restoring the default configuration Menu Option 2 Restoring configuration from NvramMenu Option 5 Configuring chassis slot devices Menu Option 4 Assigning timing source priorityMenu Option 6 Configuring the modem routing method Menu Option 7 Configuring the UI console passwordMenu Option 8 Enabling automatic DS0 state change Menu Option 9 Companding Code Configuration Configuring Software Fault Event LoggingCommands Dual T1/PRI MaintenanceCommands and logging out of the user interface UI console Dual T1/PRIMenu Option 2 Resetting the PRI NAC Menu Option 1 Resetting the highest priority timing sourceIssuing this command reboots the NAC Selecting option 1 from the main menu produces this screenForcing receiver reframe on the span lines Forcing the NAC to master the TDM busMenu Options Changing individual DS0 service states Menu Option 11 Disabling red Alarm LEDsChanging span line service state Connect/disconnect B-channel on span lines 1Feature in the card configuration option of the main menu Command, from the console’s main menuLogging Out UI ConsoleDual T1/PRI Status Dual T1/PRI Status DisplaysDisplays From the user interface UI console’s main menuRAM Menu Option 1 Checking power-up self test statusMenu Option 3 Checking chassis slot device configurations No NAC is installed and assigned to that particular slotMenu Option 2 Checking the T1/PRI’s overall status Menu Option 5 Checking the chassis’ Isdn gateway status Menu Option 4 Checking DS0/modem channel statusChecking span line 1 and 2’s DS0 status Time slot is available and awaiting a call Checking span line 1 and 2’s alarm/event statusNetServer PRI NAC Time slots are mapped toDual T1/PRI Status Displays 8CHAPTER 4 Dual T1/PRI Status Displays Press Ctrl-Rto reset any of the counters on this screen Indicate line signal conditions Using the LEDsTrouble Clearing Trouble clearing informationLevels Alarm Severity ResultCD 1 or Alrm 1 or Lpbk 1 or T1 Condition LED Color Layer 2 D-channel StatusAlarm/Error Level Trouble Clearing Correcting Alarm/Error ConditionsOff and signaling Channel Down Certification Technical SpecificationsCurrent Draw Regulatory United States ComplianceEnvironment Physical DimensionsShipping and Storage OperatingCertification B-1 IndexINDEX-2