4.10. [CAS] Parameters for T-1 Loop Start Signals

The basis for the T-1 loop start protocol is Channel Associated Signaling (CAS). The CAS component is responsible for the generation and detection of CAS signals on the phone network interface. The CAS T-1 loop start signals are defined in this section of the CONFIG file and assigned as variants in the [CHP] T-1 Protocol Variant Definition section of the CONFIG file. For details, see Section 4.16, [CHP] T-1 Protocol Variant Definitions.

Note: The CAS signaling parameters should only be modified by experienced users if the default settings do not match what the line carrier or PBX is sending or expecting for the line protocol configuration running on the card.

CAS T-1 loop start parameters include:

• PBX_Open (Loop Start PBX Open Signal)
• PBX_Close (Loop Start PBX Close Signal)
• Net_Answer (Loop Start Net Answer Signal)
• Net_Drop (Loop Start Net Drop Signal)
• Net_Abandon (Loop Start Net Abandon Signal)
• Net_RingOn (Loop Start Net Ring On Signal)
• Net_RingOff (Loop Start Net Ring Off Signal)
• PBX_FlashOpen (Loop Start PBX Flash Open Signal)
• Net_FlashDrop (Loop Start Net Flash Drop Signal)
• PBX_Flash (Loop Start PBX Flash Signal)
• Loop Start Train Definition
• Loop Start Sequence Definition

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