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SIP User's Manual 12. Configuration Parameters Reference Parameter Description NFAS Parameters Note: These parameters are applicable to PRI interfaces. Web: NFAS Group Number EMS: Group Number [NFASGroupNumber_x] Indicates the NFAS group number (NFAS member) for the selected trunk, where x depicts the Trunk ID. 0 = Non-NFAS trunk (default) 1 to 12 = NFAS group number Trunks that belong to the same NFAS group have the same number. With ISDN Non-Facility Associated Signaling you can use single D-channel to control multiple PRI interfaces. Notes: Web/EMS: D-channel Configuration [DChConfig_x] For this parameter to take effect, a device reset is required. This parameter is applicable only to T1 ISDN protocols. For a detailed description on NFAS, see ''ISDN NonFacility Associated Signaling (NFAS)'' on page 643. Defines primary, backup (optional), and B-channels only, per trunk (where x depicts the Trunk ID). [0] PRIMARY= Primary Trunk (default) - contains a Dchannel that is used for signaling. [1] BACKUP = Backup Trunk - contains a backup Dchannel that is used if the primary D-channel fails. [2] NFAS = NFAS Trunk - contains only 24 B-channels, without a signaling D-channel. Note: This parameter is applicable only to T1 ISDN protocols. Web: NFAS Interface ID EMS: ISDN NFAS Interface ID [ISDNNFASInterfaceID_x] Defines a different Interface ID for each T1 trunk (where x denotes the trunk ID). The valid range is 0 to 100. The default interface ID equals the trunk's ID. Notes: To set the NFAS interface ID, configure ISDNIBehavior_x to include '512' feature per T1 trunk. For a detailed description on NFAS, see ''ISDN NonFacility Associated Signaling (NFAS)'' on page 643. Web: Enable ignoring ISDN Allows the device to ignore ISDN Disconnect messages with Disconnect with PI PI 1 or 8. [KeepISDNCallOnDisconnectWithPI] [1] = The call (in connected state) is not released if a Q.931 Disconnect with PI (PI = 1 or 8) message is received during the call. Web: PI For Setup Message [PIForSetupMsg] Determines whether and which Progress Indicator (PI) information element (IE) is added to the sent ISDN Setup message. Some ISDN protocols such as Euro ISDN can optionally contain PI = 1 or PI = 3 in the Setup message. Version 6.2 [0] = The call is disconnected (default). [0] = PI is not added (default). 793 February 2011
