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JIRAIDAUTHSYM-23168
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There is a subtle but very important difference in the UI between ISDN/BRI (Basic Rate Interface) Signaling Groups and ISDN/PRI (Primary Rate Interface) Signaling Groups. These differences appear in the Port and Protocol panels.

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1Port and Protocol

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Configuration Field

PRI (T1)

BRI

Fractional

(tick)

(error)

TEI Assignment

(error)

(tick)

TEI

(error)

(tick)

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  1. From the Create Signaling Group drop down box at the top of the Signaling Group Table, select ISDN Signaling Group.

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    1Create ISDN Signaling Group

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Specifies when to generate local ring back

  • Auto on Alert: Depends if inband audio is available when processing alert
  • Auto on Alert/Progress: Depends if inband audio is available when processing Alert or Progress
  • Always on Alert: Always generate inband ringback when processing Alert
  • Always on Alert/Progress: Always generate inband ringback when processing Alert or Progress
  • Never: Never generate inband ringback when processing Alert or Progress

Service Msg Capability

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Specifies if service messaging is used on the signaling group. Only valid for ATT 4ESS, ATT 5ESS, NI2 and INS Sonus 1500 Switch Variants.

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Specifies whether or not the Q.931 SETUP message is sent to the far-end should include the DISPLAY Information Element (IE).
Available only when ISDN Side is set to User and the Switch Variant is set to NI2 or Euro-ISDN.

If this option is enabled, the DISPLAY IE is populated for NI2 or Euro-ISDN switch types, otherwise the DISPLAY IE is not populated for these switch types.

In general, the DISPLAY IE is populated according to ISDN communication standards. The NI2 and Euro-ISDN specifications state that the DISPLAY IE should not be populated. This option allows you to override that configuration for your environment.

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PI to Setup

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This configuration option enables the ISDN Signaling Group to add/configure a Progress IE to the outbound SETUP message if it is not present. Options are as follows:

  • None (a Progress IE is not added if there is none present, and not modified if present)
  • Not end to end ISDN (call is not end to end ISDN)
  • Destination not ISDN (destination address is not ISDN)
  • Origination not ISDN (originiation address is not ISDN)
  • Return to ISDN (call has returned to the ISDN)
  • Interworking Encountered (interworking has been encountered)
  • Inband Information (in-band information or appropriate pattern now available)
  • Delay Encountered (delay in response at destination interface)

Default entry: None.

Early Media for PI: 2(Dest not ISDN)

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Defines how PROCEEDING/PROGRESS/ALERT messages are treated for Early Media. Valid options:

Enabled. The PI:2 (Destination not ISDN) value would be treated as if early media was received.in PROCEEDING/PROGRESS/ALERT messages.

Disabled. The PI:2 (Destination not ISDN) value would be treated as if there were no early media received in PROCEEDING/PROGRESS/ALERT messages.

Include Channel Interface

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identifier

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Specifies whether to include the Interface Identifier in the Channel Identification Information Element.

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