No Card (Larry) Flashcards
RF power is a ___ log function.
10
Often used to refer to the range of frequencies able to distribute telecommunications services.
Bandwith
According to the MOCA specifications the maximum coax signal path between two devices is what?
300 ft
For Comcast, the RF energy that gets into out plant is known as ingress or what?
RFI
We partnered with ____to make the purchase process seamless. (easy ordering)
Amazon
A suite of applications that enable customers to enjoy the services they have from comcast on as as many platforms as possible.
Converged Products
Formally referred to as OCAP, it is a technical standard, which is used in the cable networks of North America.
Tru2way
Is an industry-led consortium of over 200 broadcasters, manufactuers, network operators, software developers & regulators from around the world.
DVB Project
Effective _____, cable operators must allow self-installation of cablecards.
11/1/2011
What does the “u” mean when referring to HD-uDTA?
Indicates that this box will work on the cisco or motorola plant
The four main types of dispays are?
Flat Panel, Front Projection, REar projection, Direct View
Whats is the 720 interlaced standard notation?
There is none
A german physicist, investigated galvanic currents and established the mathematical relationship between voltage, current, and resistance.
Georg Simon ohm
Is simply a flow if IP data supplied to a processor at a rate fast enough for real-time decoding
Streaming
A set of protocols that enable network devices to automatically discover each others presence
UPnP (Universal Plug and Play)
Whats is the term for amplified reflection that can cause return problems?
CPD (common path distortion)
What alerts an Xfinity Voice customer to a new voice mail message?
Stutter Dial tone
What are the 3 types of calls>
(Local) Domestic, International, Operator Assisted
What do you dial in order to place an international call?
011 + country code
What are the 3 ways a customer can access Enhanced Voicemail?
- Dial *99
- Dial home telehphone number
- Online, through Xfinity Connect
If a customer is only subscribing to Xfinity Voice, the login will be what?
10 digit home telephone number and voicemail password
With a supervisory voltage of 42-48 VDC, what would be the tip and ring side voltages?
Tip Side - 0V
Ring Side - (-48V)
In North America what is the standard ring pattern?
2 sec of ring voltage followed by a 4 second pause
In legacy telephone networks, talk batter & ring voltage, come from where>
Central Office
What would you request if you had a vintage rotart phone with xfinity voice
Pulse Dial capability
How would you access the GUI to check signal of an eMTA?
192.168.100.1
What are the 3 methods for activating Xfinity Voice Services?
- Technet (Tech360)
- Online tech activation tool
- IVR
These are the 3 troubleshooting zones where an Xfinity Voice problem may occur
RF or Coax
Copper wiring or jacks
eMTA (gateway)
What are the 5 versions of DOCSIS?
1.0, 1.1, 2.0, 3.0, 3.1
What version of DOCSIS introduced support for IPV6?
DOCSIS 3.0
Phone service that transmits telephone calls over a public network, such as interenet
IP Telephony
Worldwide network of public circuit switches used by traditional, local, and long-distance companies
PSTN
Technology used to transmit voice and related calls over data networks
IP phone/IP voice
This is no longer considered a safe practice while working on phone
Taking phone off hook
What are the 5 customer experience pillars
Customer Viewpoint Automated Support Reliability Employee Empowerment Simplification
CPNI
Customer Proprietary Network Information
How long must you be a CT2 before becoming a CT3?
6 months minimum
Refers to an electromagnetic wave that generally falls in the frequency range 3Khz to 300GHz
RF (radio frequency)
Video signal bandwidth is typically express in
MHz
What is FM radio Frequency range
88MHz to 108 MHz
What wireless technology is associated with 700,800,1700,1900 MHZ?
LTE FDD
Coax attenuation specifications are based on what?
100 feet of cable at 68 degree F
Each 10 degree increase in temperature results in what?
1.2% increase in Attentuation
This would be the best dielectric but not feasible, because there would be nothing to support the center conductor
Air
This tupe of attenuation happens when a splitter or pad is inserted to the drop
Passive Loss or Flat Loss
A frequency selective receiver capable of tuning a desired frequency with a meter showing the strength of input voltage
SLM (signal level meter)
To test the insertion loss of a splitter, follow these simple steps?
Connect a 75 Ohm terminator to the input
Measure RF source level, then insert into one of the outputs
Measure the RF level at the outout
The difference is the port to port isolation
A measure of the ability of a circuit to increase the power or amplitude of a signal from the input to the output
Gain
An increase of 3 dB ____the signal power
Doubles
Whats the formula for Total loss/
cable loss + passive loss
