Appendix

ISDN Cause Codes

Cause

Cause Description

Definition

Code

 

 

29

Facility rejected

The network cannot provide facility requested by the user.

 

 

 

30

Response to STATUS

The prior receipt of a status inquiry message generated the

 

ENQUIRY

status message.

 

 

 

31

Normal, unspecified

A normal even has occurred with no standard cause applying.

 

 

No resulting action is required.

 

 

 

34

No circuit/channel available

The call cannot be taken because no appropriate channel is

 

 

available to establish the connection.

 

 

 

38

Network out of order

The network is not functioning correctly and this condition

 

 

may persist for an extended period. The call can not reach

 

 

the destination and an immediate attempt to reconnect will

 

 

probably fail.

41

Temporary failure

The network is not functioning correctly and an error occurred.

 

 

The problem will be resolved shortly.

 

 

 

42

Switching equipment

The network switching equipment is temporarily overloaded

 

congestion

and the destination can not be reached.

 

 

 

43

Access information

The network cannot provide the requested access information.

 

discarded

 

 

 

 

44

Requested circuit/channel

An unknown reason prevents the remote equipment from

 

not available

providing the requested channel. This might be a temporary

 

 

problem.

47

Resource unavailable,

An unknown reason prevents the remote equipment from

 

unspecified

providing the requested channel. This might be a temporary

 

 

problem.

49

Quality of service

The network cannot provide the requested quality of service

 

unavailable

(as defined by CCITT recommendation X.213). This might be a

 

 

subscription problem.

50

Requested facility not sub

The remote equipment supports the requested supplementary

 

scribed

service, but only by subscription.

 

 

 

57

Bearer capability not

The caller has requested a bearer capability that the network

 

authorized

can provide, but the user is not authorized to use. This might

 

 

be a subscription problem.

58

Bearer capability not

The network normally provides the requested bearer capability,

 

presently available

but not at the present time. This might be due to a temporary

 

 

network problem or to a subscription problem.

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Polycom DOC2091A manual 150

DOC2091A specifications

The Polycom DOC2091A is a state-of-the-art communication device designed for conference calls, making it a cornerstone in modern business environments. Renowned for its advanced features and cutting-edge technology, this model ensures seamless collaboration among teams, regardless of their geographical location.

One of the standout features of the DOC2091A is its superior audio quality, facilitated by Polycom's renowned Acoustic Clarity technology. This technology ensures that all participants can speak and hear clearly without interruptions, feedback, or distractions. Whether in a large conference room or a small office, the DOC2091A adapts to varying acoustic environments, delivering crisp and natural sound.

The device also supports wideband audio, which allows for a broader frequency response. This means that users experience a richer sound quality, making conversations more engaging and effective. The built-in microphone array captures voices from all corners of the room, while the echo cancellation feature ensures that echoes are eliminated, providing a captivating conferencing experience.

In terms of connectivity, the Polycom DOC2091A is equipped with multiple interfaces, including USB and Bluetooth, allowing it to connect effortlessly to various devices such as laptops, smartphones, and tablets. This versatility ensures that users can quickly set up calls, regardless of the technology they are using.

Moreover, the DOC2091A features integrated video capabilities, supporting HD video conferencing through compatible platforms. This enhances communication further by allowing visual cues to be conveyed during discussions, making virtual meetings more interactive and productive.

User experience has been prioritized in the design of the DOC2091A, with an intuitive interface that allows for easy navigation. Users can quickly access essential functions such as mute, volume control, and call management without extensive training.

The device is also designed with portability in mind, making it suitable for both fixed office environments and on-the-go usage. Its lightweight build and compact design allow it to fit into various settings effortlessly.

In conclusion, the Polycom DOC2091A exemplifies the future of communication technology. With its exceptional audio performance, versatile connectivity options, and user-friendly design, it is an essential tool for businesses aiming to enhance collaboration and communication in an increasingly remote and digital world. This device is truly a vital asset for any organization looking to streamline its conferencing capabilities.