Day 1 Flashcards
What services does onecom provide?
Lines, broadband and hosted telephony
What does the first line technical support deal with?
Fixed line faults (FLF)
What is a PSTN line?
It is a public switched telephone network. A physical line that carries telephone signals through copper wire.
What are the three layers of hierarchy in the business?
- Communications provider (CP) = onecom.
- Carrier (Vodafone)
- Network provider (open reach)
What services does the communications provider provide?
Billing, account management, customer service, network faults.
How many lines can PSTN have?
Single line can make one call
Multi lines can make minimum of 2 calls (2 channels) up to maximum of 8 calls.
Integrated service digital network (ISDN) - 8 - 30 calls through private branch exchange. Using the PSTN, ISDN can transfer voice and data across copper wires using digital signals.
How is ISDN better than PSTN?
It provides more stable and reliable calls over a longer distance.
What phone line services can PSTN supply?
Phone, FAX, lift telecom, alarm, card machine.
What are the different types of broadband?
- ADSL
- FTTC
- SoGEA
- FTTP
- DIA (direct internet access aka leased line)
What is ADSL?
Asymmetric digital subscriber line. Is a type of digital subscriber line technology. Basic broadband, an upgraded version of dial up. It enables faster data transmission over copper telephone lines.
What is FTTC?
Fibre to the cabinet
Exchange = fibre = cabinet = copper = customer
75 - 80% of customers
FTTC runs alongside a phone line so it has a CLI.
What is FTTP?
Fibre to the premise.
What is SoGEA?
Single order generic Ethernet access.
Same as FTTC
For cloud phone and VP phone.
What are the contended lines?
ADSL
FTTC
SoGEA
FTTP
What is a leased line?
Direct internet access. Exchange to premise.
What is a CLI?
Calling line identity (telephone number)
What is a CLI?
It’s a phone number that can identify the line used.
What has a CLI?
PSTN
ADSL and FTTC have a CLI as it sits on PSTN line.
What routers are and aren’t part of first line technical support?
Are:
Fixed line
Fixed line with 4g/5g backup
Aren’t:
4g/5g routers
What is the top end speed of ADSL?
24/1
What is the top end speed of FTTC?
80/20
What are the different connection speeds of FTTC?
40/10
55/10
80/20
What are the different speeds of FTTP?
1gb/1gb
330/50
115/20
What are the three speeds of FTTP?
1gb/1gb
330/50
115/20
