Panasonic KX-NT560 Kurzreferenz-Handbuch - Seite 8
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Important Information
recommends that suppliers, designers and installers using this technology for
calls to or from the PSTN refer to ITU E Model requirements in the design of
their networks. The overall aim is to minimise delay, distortion and other
transmission impairments, particularly for those calls involving cellular and
international networks, which already suffer extensive delay.
Echo cancellation
R Echo cancellers are not normally required in the Telecom PSTN because
geographic delays are acceptable where CPE return loss is maintained within
Telepermit limits. However, those private networks making use of Voice over IP
technology are required to provide echo cancellation for all voice calls. The
combined effect of audio/VoIP conversion delay and IP routing delay can cause
the echo cancellation time of ³64 mS to be required.
Information for Users on Collection and Disposal of
Old Equipment and used Batteries
These symbols on the products, packaging, and/or accompanying documents
mean that used electrical and electronic products and batteries should not be
mixed with general household waste.
For proper treatment, recovery and recycling of old products and used
batteries, please take them to applicable collection points, in accordance with
your national legislation and the Directives 2002/96/EC and 2006/66/EC.
By disposing of these products and batteries correctly, you will help to save
valuable resources and prevent any potential negative effects on human
health and the environment which could otherwise arise from inappropriate
waste handling.
For more information about collection and recycling of old products and
batteries, please contact your local municipality, your waste disposal service
or the point of sale where you purchased the items.
Penalties may be applicable for incorrect disposal of this waste, in
accordance with national legislation.
For business users in the European Union
If you wish to discard electrical and electronic equipment, please
contact your dealer or supplier for further information.
Information on disposal in other countries outside the
European Union
These symbols are only valid in the European Union. If you wish to
discard these items, please contact your local authorities or dealer
and ask for the correct method of disposal.
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