TIA-920.130-A:2011

$29.25

Telecommunications – Telephone Terminal Equipment – Transmission Requirements for Wideband Digital Wireline Telephones with Headset

Published By	Publication Date	Number of Pages
TIA	2011	52

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Category: TIA

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Description

This standard establishes transmission performance requirements
for headset devices that function as a wideband digital wireline
telephone. Transmission may be over any digital interface including
Local or Wide Area Networks, Firewire/IEEE Std 1394, Universal
Serial Bus (USB), public ISDN or digital over twisted pair wire.
This includes TDM-based and packet-based (e.g. VoIP) telephones.
These telephones may be connected through modems, voice gateways,
wireless access points, or PBXs, or they may be personal
computer-based telephones. Examples include, but are not limited
to: ISDN telephones, digital proprietary telephones, VoIP
telephones (corded and cordless), softphones running on personal
computers, IEEE Std 802.11 telephones, USB telephony devices, DECT
(CAT-iq) telephones, Bluetooth® telephony devices, and HD (High
Definition) voice telephony devices.

Some telephone systems consist of a host (such as a laptop
computer) with an interface for a Universal Serial Bus (USB) or
Bluetooth device. If the host device is assumed to have a 0 dB loss
plan in its default state, then the relevant clauses of this
standard are directly applicable to the USB or Bluetooth device. If
the host system provides gain or loss in the send path, receive
path, or both, then the relevant clauses of this standard apply to
the composite system.

The test measurement methods in this standard reference
procedures in IEEE Std 269 and ITU-T Recommendations. Several
performance measurement procedures are established, each of which
yields standardized measurement data that may be used for the
determination of compliance with this standard. Although this
document may reference specific procedures or test equipment, the
intent is not to be allinclusive. Any measurement procedure and
equipment that can result in an identical measurement is considered
valid.

NOTE: If the main purpose for testing to this
standard is comparison testing of different products, rather than
compliance testing, then it is important that identical test
procedures and equipment be used when testing the different
products.

While the procedures may call out specific test points within
the requirements, the full range of the requirements take
precedence.

Additional information