Carrier Access SNMP manual Option 7. Customized Signaling

FXS Signaling Option Descriptions

8.6.1.6Option 5. Wink-Start to Loop-Start Conversion with ANI/DNIS and Calling Party Disconnect

Switch A	Switch B	Switch C
ON	OFF	ON

This option provides a loop-start interface between the AB2 and the PBX for voice mail/phone applications. E&M wink-start signaling and per-channel ringback tones are sent to the T1 line.

Ringing voltage is applied immediately after incoming seizure. The 200 ms outgoing wink “pro- ceed-to-send” signal is not sent to the T1 network until 800 ms after FXS ringing voltage has been tripped (answered). Thus, the voice mail or PBX DTMF or MF register has at least one second to be attached to the line after closing the loop. The network proceeds to automatically send four to ten ANI or DNIS digits.

User also receives a two-second Tip Open condition (loop current turns off) at the FXS-ID when the network releases seizure (the far-end call hangs up). Battery feed from the FXS-ID returns to normal idle (tip grounded) after the two-second disconnect. This feature is similar to local tele- phone service Calling Party Disconnect (CPD), provided by some Central Office equipment for answering machines and PBXs that are equipped to detect loss of loop current on their line inter- faces. This loss of loop current informs the equipment to disconnect the call.

8.6.1.7 Option 6. Wink-Start to Ground-Start Conversion with ANI/DNIS

Switch A	Switch B	Switch C
OFF	ON	ON

This option provides a ground-start interface between the AB2 and the PBX for voice mail/phone applications. E&M wink-start signaling and per-channel ringback tones are provided to the T1 line.

Ringing voltage is applied immediately after incoming seizure. The 200-ms outgoing wink “pro- ceed-to-send” signal is not sent to the T1 network until 800 ms after FXS ringing voltage has been tripped (answered). Thus, the voice mail or PBX DTMF or MF register has at least one second to be attached to the line after closing the loop. The network proceeds to automatically send 4 to 10 ANI or DNIS digits.

8.6.1.8 Option 7. Customized Signaling

Switch A	Switch B	Switch C
ON	ON	ON

9/24/01 8-9