Thread Subject: Re: Today's Telecom Call - volume gain

From: Gregg Vanderheiden
Date: Mon, Sep 17 2007 11:35 PM

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Hi Diane,



I think that summarizes some of the topics discussed today.



Couple of additional notes.



1) 15-16 means 15. So in the end we should say 15 or say 16 after
we find out what is possible. On the call we talked about working on 16 db
if possible and 15 db if not possible and consumers would agree.



2) the exceptions were dependent on engineering analyses that demonstrated
that nothing above 12 db could be done with them. (except the cell phone
which is in another committee)



3) Industry was going to see how high they could go before battery or
voltage or costs shot up. Consumers were going to see if 20 db could be
brought down to 16db or maybe 15 db.






Gregg
-- ------------------------------
Gregg C Vanderheiden Ph.D.






_____


From: = EMAIL ADDRESS REMOVED =
[mailto: = EMAIL ADDRESS REMOVED = ] On Behalf Of Diane Golden
Sent: Monday, September 17, 2007 2:25 PM
To: 'TEITAC Telecommunications Subcommittee'
Subject: Re: [teitac-telecom] Today's Telecom Call - volume gain

See if this summarizes what we've been discussing:



Base requirement - E&IT that provides a function allowing voice
communication via audio transducer typically held to the ear (except those
exempted below) must provide a gain adjustable from the normal unamplified
level to at least 15-16 dB above the normal unamplified level as measured in
accordance with the provisions of the FCC regulation §68.317 for volume
control. The volume at the normal unamplified level setting must also meet
the requirement in FCC regulation 68.317.



Exception 1 - Analog line-powered E&IT and battery powered cordless
telephones must comply with FCC regulation §68.317 for volume control.



Exception 2 - Cellular phones







Diane

-----Original Message-----
From: = EMAIL ADDRESS REMOVED =
[mailto: = EMAIL ADDRESS REMOVED = ]On Behalf Of Brooner
Mary-AMB004
Sent: Monday, September 17, 2007 11:46 AM
To: = EMAIL ADDRESS REMOVED =
Subject: [teitac-telecom] Today's Telecom Call - volume gain


Gentlepeople: -


I have done a bit of drafting to improve our discussions. There is still a
lot to work out but take a look at this. The underlined text is new
wording, the [x] text would be deletions from current text.


See you at 2 pm.





.2-E - Volume (Gain)


For incoming voice signals:

1 Users must be able to adjust the audio output level.

2. Analog line-powered telecommunications products, wireline, and all
wireline or VoIP cordless telephones [wireline or VoIP] must comply with
FCC regulation §68.317 for volume control



3. All cellular phones - TBD



4. Digital [All other telecommunications]products or systems that
provide a function allowing voice communication via an audio transducer
typically held to the ear with a hand must provide a gain adjustable from
the normal unamplified level to at least 18 dB above the normal unamplified
level as measured in accordance with the provisions of the FCC regulation
§68.317 for volume control. The volume at the normal unamplified level
setting must also meet the requirement in FCC regulation 68.317.



5. Other products or system that provide a function allowing voice
communications should provide adjustable volume up to 18dB.



6. Where additional volume is needed, ...

Advisory Note 1 Volume (gain) on cellular and PCS handsets is currently the
focus of review and study in ATIS Incubator. It is recommended that no
recommendation at this time be made by the TEITAC, but rather, the
recommendations from the study can be given to the Access Board at a later
time.



Advisory Note 2 There are other digital products and systems such as digital
telephones and systems that draw from Ethernet, as well as laptop telephone
emulators which use a headset. None of these choices can be measured using
FCC regulation 68.317 for volume control. In the case of laptop telephone
emulators, they are typically used with a headset which is an accessory.

Discussion or Rationale:

* Language for cellular phones pending outcome of ATIS Study Group 11
work
* Further research needed for 20 dB requirement
* Review telecoms/communications to be sure requirement is inclusive

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