Telecommunications Industry Association
TR41.9.1-08-05-008
Document Cover Sheet
Project Number
PN-3-0016-RV2 (to become TIA-968-B)
Document Title
NIPP-NAI VDSL2 Contribution
Source
Conexant Systems, Inc.
Contact
Distribution
Intended Purpose
of Document
(Select one)
Massimo Sorbara
100 Shulz Drive
Red Bank, NJ 07701
Phone: (732)345-7535
Fax: (732)345-7592
Email: massimo.sorbara@conexant.com
TR-41.9.1
X
For Incorporation Into TIA Publication
For Information
Other (describe) -
The document to which this cover statement is attached is submitted to a Formulating Group or subelement thereof of the Telecommunications Industry Association (TIA) in accordance with the
provisions of Sections 6.4.1–6.4.6 inclusive of the TIA Engineering Manual dated March 2005, all of
which provisions are hereby incorporated by reference.
Abstract
This contribution contains the agreed text from NIPP-NAI-2007-124, containing proposed text for the
harms prevention criteria for VDSL2 Terminal Equipment per the updated PSD masks in Annex A of
G.993.2-2006/02 Amendment 1 (2007/04). This agreed text is for submission to TR-41.9.
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NIPP-NAI-2007-152
ATIS Network Interface, Power & Protection Committee (NIPP)
Subcommittee Network Access Interfaces (NAI)
Miami, FL; 24-27 September 2007
CONTRIBUTION
TITLE:
Agreed Text for Harms Prevention Criteria for VDSL2 Terminal
Equipment
SOURCE*:
NAI Chair1
PROJECT:
VDSL2, Liaison to TR-41.9
_______________________________
ABSTRACT
This contribution contains the agreed text from NIPP-NAI-2007-124, containing proposed text
for the harms prevention criteria for VDSL2 Terminal Equipment per the updated PSD masks in
Annex A of G.993.2-2006/02 Amendment 1 (2007/04). This agreed text is for submission to TR41.9.
_______________________________
1
CONTACTS: Massimo Sorbara; Email: massimo.sorbara@conexant.com; Tel: 732-345-7535; Fax: 732-345-7592
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NIPP-NAI-2007-152
Proposed Harms Prevention Criteria for VDSL2 Terminal Equipment
The proposed limits for VDSL2 VTU-R modems designed per Annex A of G.993.2-2006/02
Amendment 1 (2007/04) are derived from the VTU-R upstream signal power limits in Annex A
G.993.2-2006/02 Amendment 1 (2007/04) and the longitudinal output voltage limits and
transverse balance limits from T1.417-2003.
1. Signal power limitations
a. Upstream metallic signal power limits
i.
Total aggregate power limit of +14.5 dBm from Table 6.1 of G.993.2. Amendment
1.
ii. VTU-R PSD mask limits from Annex A of G.993.2 Amendment 1.
b. Upstream longitudinal output voltage limits
Existing limits for VDSL2 in TIA-968-A are sufficient. No changes proposed.
2. Transverse balance limits
Transverse balance limitations out to 30 MHz are already defined in Figure 4.11(a) of TIA-968A. The bandwidth for transverse balance testing is derived from the upstream and downstream
PSD masks. The transverse balance of VDSL2 terminal equipment shall equal or exceed the
values in Figure 4.11(a) of TIA-968-A over the entire range of frequencies specified for each
VDSL2 profile in Table 4.12 below. In addition, for VDSL2 over POTS modes, VDSL2 terminal
equipment shall meet the transverse balance limitations for analog voiceband equipment in
Section 4.6.2 of TIA-968-A.
Transverse Balance Requirements (dB)
Transvere Balance M - L
Acceptable Region
40
35
30
25
Unacceptable Region
200 Hz
12 kHz
1.544 MHz
12 MHz
30 MHz
Frequency
Figure 4.11(a) –Transverse Balance Requirements for ISDN BRA, 1.544 Mbps (including ISDN PRA), ADSL and Other DSL
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NIPP-NAI-2007-152
Table 4.12 Frequency Ranges of Transverse Balance Requirements for equipment connecting to digital services
Append the following rows to Table 4.12.
Digital Interface
Frequency
Range (kHz)
VDSL2 over POTS profiles 8a, 8b, 8c, and 8d
13.6 to 8,500
VDSL2 over POTS profiles 12a and 12b
13.6 to 12,000
VDSL2 over POTS profile 17a
13.6 to 21,000
VDSL2 over POTS profile 30a
13.6 to 30,000
VDSL2 all digital mode profiles 8a, 8b, 8c, and 8d
(see note)
VDSL2 all digital mode profiles 12a and 12b
(see note)
0.2 to 8,500
0.2 to 12,000
VDSL2 all digital mode profile 17a (see note)
0.2 to 21,000
VDSL2 all digital mode profile 30a (see note)
0.2 to 30,000
Longitudinal
termination
(RL) (ohms)
Metallic
termination
(RM) (ohms)
90
100
90
100
90
100
90
100
500/90
100
500/90
100
500/90
100
500/90
100
NOTE: For 0.2 to 12 kHz the longitudinal termination (RL) shall be 500 Ω and above 12 kHz the longitudinal
termination (RL) shall be 90 Ω.
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