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DEFINITY Made Easy Tools
Issue 2, November 2000
DEFINITY Hardware
TN1648B
The TN1648 is an SPE component used for maintenance. A processor in the TN1648 runs control routines that connect to maintenance software. The TN1648 has a 5-LED alarm panel and a toggle switch to manually inhibit automatic emergency transfer of PPN analog lines.
The TN1648 provides 2 RS-232 interfaces for connection to an administration terminal and, with duplication, connection to a standby maintenance terminal. The TN1648 also provides a tip and ring port with a built-in modem allowing a remote administration terminal to access the system.
The circuit pack allows connection to the management terminal and connection to and termination of 1 end of the processor bus. Other maintenance items include:
- PPN alarm monitors and outputs including auxiliary alarms for auxiliary equipment and environmental monitoring for over- temperature conditions
- Power supply sense and control for the carriers
- Emergency transfer control for catastrophic failure. The circuit consists of a 3-position toggle switch. The switch may be moved into the manual on position, manual off position, or automatic position.
- Non-volatile memory containing the time-of-day clock, the initialization and administration system (INADS) telephone number, login password, and product identification
- Alarm panel information with major, minor, and warning LEDs, an ACKnowledge LED, and an emergency transfer LED
The TN1648B increases the internal and external modem speeds from 2400 bps to 9600 bps with error control implementation. Appropriate software administration is added to choose between external modem access to the maintenance port, and direct loop start trunk access. The former is used in countries that do not support the analog loop signaling protocol supplied by the internal modem.
A cable from the TN1648B connects directly to an external modem. When the external modem is selected, the internal modem is disabled. The TN1648B is backward-compatible with the TN1648.
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| Copyright� 2000 Avaya Inc |
| Send comments to MadeEasy Development Team |
| Always check at the Made Easy Web site for the most current information. |