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Polycom RS-232 manual Nvpswd -- Change Non-Volatile Memory Password

Models: RS-232

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This command controls the non-volatile memory lock feature. When NVLOCK is enabled, the user may not save any system settings to non-volatile memory. This includes global parameters, presets, macros, labels, and logic assignments. The lock applies whether the user tries to make the changes via RS-232, front panel, logic inputs, or any other method. The user will still be able to query all the features of the device, but will get an error message if an attempt is made to change them. When NVLOCK is disabled, the user has full access to the system settings.

Usage of this command is similar to other boolean commands (see Section 6.1) except that when

disabling this feature, the password must be supplied for the command to work. If an incorrect password is supplied, 'ERROR#005' will be generated. The examples below illustrate the correct usage. The examples assume that the password has been set to 'aspi' (the default). The NVLOCK password can be changed via the NVPSWD command.

This command is saved to global non-volatile memory and is not part of a preset. Its value is saved each time it is changed. It will retain its value after power-down. Since this command writes to non- volatile memory, there will be a delay before an acknowledgment is returned.

Example

S01NVLOCK1

S01NVLOCK0,yumyum

S01NVLOCK0,aspi

S01NVLOCK?

Description

Lock the non-volatile memory to prevent users from changing the settings.

Attempt to unlock the non- volatile memory by using an invalid password.

Unlock the non-volatile memory by using the correct password.

Query the locked status of the non-volatile memory.

Status Message

S01NVLOCK1

S01ERROR#005 -- since an invalid password was given, an error message was generated. If error messages have been disabled (via the ERROR command),

then no status message will be generated.

S01NVLOCK0

S01NVLOCKx , where x is 0 or 1

depending on whether the non-volatile memory is unlocked or locked, respectively.

8.113. NVPSWD -- Change Non-Volatile Memory Password

This command sets or queries the non-volatile memory password. This password is used in conjunction with the NVLOCK command. The non-volatile memory must be unlocked ('NVLOCK0') in

order to use this command to set or query the non-volatile memory password. If the non-volatile memory is locked, then this command will result in 'ERROR#004'. The examples below assume that the non-volatile memory is unlocked.

Example

Description

Status Message

S01NVPSWDlemur

Set non-volatile memory password to 'lemur'.

S01NVPSWDlemur

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Polycom RS-232 manual Nvpswd -- Change Non-Volatile Memory Password, Query the locked status of the non-volatile memory
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RS-232 specifications

Polycom RS-232 is a key interface utilized in various communication and audiovisual systems, enabling effective integration between different devices. This technology employs a standard serial communication protocol that allows for robust control and communication, particularly in environments that require sophisticated audiovisual setups.

One of the main features of Polycom RS-232 is its ability to facilitate point-to-point communication over distances of up to 50 feet without the need for a repeater. This long-range connectivity is essential in large conference rooms and auditoriums where devices are often spread out over considerable distances. The serial connection is often more reliable than wireless options, which can be susceptible to interference.

Another notable characteristic is its versatile compatibility with a range of devices, including cameras, projectors, and interface panels. This allows users to control multiple devices from a single point, streamlining the operation of complex setups. The straightforward nature of RS-232 commands simplifies integration, which is a significant benefit for both installers and end-users.

Polycom RS-232 also supports various baud rates, giving users the flexibility to optimize communication speed based on their requirements. This adaptability ensures that users can achieve the desired performance, whether they are managing basic functions like power and volume control or more complex commands for switching video sources or adjusting settings.

The technology also features error-checking capabilities, which contribute to its reliability in communication. This reduces the likelihood of issues during operations, ensuring that commands are correctly received and executed. Additionally, its structured protocol aids in diagnosing and troubleshooting, making it easier to manage any issues that arise.

With its robust nature and proven reliability, Polycom RS-232 remains a pivotal technology in the realm of audiovisual communications. Its combination of long-range capabilities, compatibility, flexibility, and reliability makes it an essential tool for enhancing the efficiency of modern communication environments. As technology continues to evolve, the importance of dependable interfaces like Polycom RS-232 cannot be overstated, ensuring seamless integration and operation of sophisticated communication systems. Whether used in educational institutions, corporate environments, or event venues, Polycom RS-232 guarantees a streamlined experience in device management and control.