Basic functions | - Supports the E&M trunk functions in 1E1M, 2E2M, reverse 2E2M, and none modes.
- Supports 2-wire/4-wire audio signals. An AT8 board supports the setting of 2-wire/4-wire audio modes using the NMS.
- 2-wire/4-wire audio port TX Gain (dB): -20.0 to 0.5, in steps of 0.5.
- 2-wire/4-wire audio port RX Gain (dB): -7.0 to 13.0, in steps of 0.5.
Supports the Bell types I, II, III, IV, V and SSDC5 E&M signaling. NOTE: An AT8 board does not support E&M signaling of Bell types I, III, and V when the NE uses APIU boards. - Supports the association of signaling and services.
- None: not to associate.
- Signaling Reception: When the signaling reception status is idle, the audio services sent to the cross-connection side are invalid; when the signaling reception status is busy, the audio services are valid.
- Signaling Transmission: When the audio services received from the cross-connect side are invalid, the signaling transmission status is idle; when the services are valid, the signaling transmission status is busy.
- Signaling Reception and Transmission: associates signaling with services in both the receive and transmit directions.
NOTE: - Ports 1 to 4 can work in either 1E1M, 2E2M or reverse 2E2M mode. Ports 5 to 8 can work in 1E1M or none mode.
- When working in 2E2M or reverse 2E2M mode, the board processes only the first channel of E&M signaling, if signaling and services are associated.
- If port 1 works in 2E2M or reverse 2E2M mode, port 5 cannot work in 1E1M mode. The limit applies also to ports 2 and 6, ports 3 and 7, as well as ports 4 and 8.
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Port | - External ports: an Anea 96 port, providing eight logical ports. Each logical port consists of eight wires, representing DDN-1 to DDN-8.
- Internal ports: 2M-1 to 2M-8, representing eight E1 internal ports that use timeslots 1-15 and 17-31, with port IDs 65 to 72, respectively.
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Service processing | Receives/transmits and processes 2-wire/4-wire audio and E&M services. |
Overhead processing | Supports the setting and query of the V5 and J2 bytes. |
Alarms and events | Provides alarms and events for maintenance and fault locating. |
Maintenance features | - Supports warm and cold resets. The warm reset does not affect services.
- Supports the query of the manufacturing information of the board.
- Supports board voltage detection and alarm reporting.
- Supports board temperature detection, alarm reporting, and performance statistics collection.
- Hot board swapping.
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2M ASON | When working with TNZ5UXCMS, the board supports this function. |
