PHT 16 Flashcards Preview

2016 Master > PHT 16 > Flashcards

Flashcards in PHT 16 Deck (34):
1

Account passes but may alert tech to issues

Pass with Warnings

2

Account passes due to NWT event on account

Pass with Overides

3

What 4 graphs on on PHT

MOCA, FLUX GRAPH, LIVE SPECTRA GRAPH, US and DS docsis graph

4

PHT has a pass/fail based on the

premise devices

5

Upstream TX upper fail

>54dBmV

6

Upstream TX lower fail

<25dBmV

7

Downstream RX upper fail

>12dBmV

8

Downstream SNR single threshold fail

<33dB

9

MoCA PHY Rate single threshold fail

< 200 Mbps (XG to XI, XB to Xi, XG to XB devices only; Xi to Xi or RNG150 to RNG150 not in scope)

10

FLUX ICFR single threshold fail

>= 3 dB ICFR

11

(UET)

Upstream Extended Transmit

12

A growing number of devices in our network have Upstream Extended Transmit (UET) capabilities and can transmit___higher than the initial DOCSIS 3.0 specification allowed

3 dBmV

13

the level a device is transmitting at, or would need to transmit at in order to reach the CMTS at the proper input level

Actual US Tx

14

A registration state of 1,2,3 or 5 on any channel indicates that a device is not utilizing those channels and is in

partial bonding mode

15

If a Device is transmitting at maximum power and still cannot reach the CMTS at the requested input level, generally 0 dBmV, it is in a state called

compression

16

DOCSIS 3.0 devices have the ability to send and receive data transmissions across multiple US and DS channels, this is called

“bonding”

17

(FBC)

Full Band Capture

18

Downstream RX lower fail

less than -10dBmV

19

4 ways to access customer in PHT

MAC Address, Home Address, Account #, Phone #

20

PHT results fall into 4 possible results:

Pass• Pass W/ Warnings • Pass W/Overrides • FAIL

21

What's an Unrecognizable device (PHT)

PHT pass with warning examples

active device on an account (account at least 3 days old) that has been unresponsive for longer than 24 hours

22

what is incomplete DP3 Data – (PHT)

PHT pass with warning examples

One or more devices on the account did not return all requested data needed for PHT

poll for data is missing data (could result from poor cell connectivity or disruption during test)

23

What is Service Call Failure (PHT)

PHT pass with warning examples

A call to any service used to gather PHT data failed for the account tested

failure to call data sources (cell connectivity, VPN drop, tools outage)

24

What is PHT Pass with override

The account tested must fail and it must be listed as an affected account for an ongoing NWT event that matches the exact failure reason
(US TX, DS SNR, Ds Rx, spectra suckout, spectra wave)

USSNR does not trigger a Pass w/Override condition

25

maximum US TX level for a DOCSIS device without UET using 1 channel

57dBmv

26

maximum US TX level for a DOCSIS device without UET using 2 channels

54dBmV

27

maximum US TX level for a DOCSIS device without UET using 3-4 channels

51dBmV

28

maximum US TX level for a DOCSIS device with UET using 1 channel

60dBmV

29

maximum US TX level for a DOCSIS device with UET using 2 channels

57 dBmV

30

maximum US TX level for a DOCSIS device with UET using 3-4 channels

54dBmV

31

What does PHT stand for

Premise Health Test

32

PHT Metrics and Thresholds Partial bonding

Registration state less than or greater than 4
Downstream state less than or greater than1

33

PHT Metrics and Thresholds
Spectra

Any impairment, other than (ACP)

34

What is a Missing PHY rate (pht)

PHT pass with warning examples

call from X-Ray failed to return PHY rates for all devices

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