4.11. [CAS] Parameters for T-1 Ground Start Signals

The basis for the T-1 ground 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 ground 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_Ground (Ground Start PBX Ground Signal)
• PBX_Answer (Ground Start PBX Answer Signal)
• PBX_Release (Ground Start PBX Release Signal)
• PBX_Drop (Ground Start PBX Drop Signal)
• Net_Ground (Ground Start Net Ground Signal)
• Net_Drop (Ground Start Net Drop Signal)
• Ring_On (Ground Start Ring On Signal)
• Ring_Off (Ground Start Ring Off Signal)
• PBX_FlashDrop (Ground Start PBX Flash Drop Signal)
• Net_FlashDrop (Ground Start Net Flash Drop Signal)
• Net_Answer (Ground Start Net Answer Signal)
• PBX_Flash (Ground Start PBX Flash Signal)

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