| Avaya IP500 Analog Trunk 4 Features - Connects to IP500 base card - When connected to IP500 base card, it provides 4 loop-start analog trunk ports
- Also provides DTMF, caller ID (ICLID), busy tone detection
- Adjustable echo cancellation - Selectable to Off, 8, 16, 32, 64, and 128 milliseconds
- Power Failure Transfer - When fitted to an IP500 analog phone base card. During power failure, the first extension port (port 1) is connected to the first analog trunk (port 9)
- Maximum - 4 per IP500 control unit
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| Avaya IP500 Analog Trunk 4 V2 Features - Connects to IP500 base card - When connected to IP500 base card, it provides 4 loop-start analog trunk ports
- Also provides DTMF, caller ID (ICLID), busy tone detection
- Adjustable echo cancellation - Selectable to Off, 8, 16, 32, 64, and 128 milliseconds
- Power Failure Transfer - When fitted to an IP500 analog phone base card. During power failure, the first extension port (port 1) is connected to the first analog trunk (port 9)
- Maximum - 4 per IP500 control unit
Changes from V1 to V2
- Service Status/Line Status Indication
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| Avaya IP500 Universal PRI 1 Features - Daughter board that installs on IP500 base card
- Ports/Channels - 1 PRI trunk port. Connections via port 9 of the host IP500 base card.
- Supports the following PRI modes:
- 1) T1 robbed bit (24B channels per port) T1 PRI (23B+D channels per port)
- 2) E1 PRI (30B+D channels per port)
- 3) E1R2 PRI (30B channels per port)
- Initially supports 8 unlicensed B-channels
- Additional channels are activated by IP500 Universal PRI licenses
- Maximum- 4 per IP500 control unit
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| Avaya IP500 Universal PRI 2 Features - Daughter board that installs on IP500 base card
- Ports/Channels - 2 PRI trunk port. Connections via port 9 of the host IP500 base card.
- Supports the following PRI modes:
- 1) T1 robbed bit (24B channels per port) T1 PRI (23B+D channels per port)
- 2) E1 PRI (30B+D channels per port)
- 3) E1R2 PRI (30B channels per port)
- Initially supports 8 unlicensed B-channels on each port
- Additional channels are activated by IP500 Universal PRI licenses
- Maximum - 4 per IP500 control unit
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