1. Components of the System
Telephone Wires: Carry Landline Network Signals
Mobile Telephone Switching Office (MTSO): Send/Receive Radio Waves with Cell Towers, Communication Satellites, Other MTSO’s, and Landline Network Signals through Telephone Wires
Local Switching Center: Transfers Landline Network Signals through Telephone Wires
Cell Tower: Send/Receive Radio Waves with Cell Phones, Other Cell Towers, MTSO’s
Home Phone (Landline): Send/Receive Landline Network Signals through Telephone Wires
Cell Phone: Send/Receive Radio Wave Signals with Cell Tower in Area
Satellite Phone: Send/Receive Radio Wave Signals to/from Communication Satellites
Communication Satellite: Send/Receive Radio Wave Signals to/From Satellite Phones and MTSO’s
Radio Waves: Carry Cell Phone and Satellite Phone Signals
TELECOMMUNICATIONS

2. POINTS OF CONTACT MEDIUMS TRANSFER STATIONS
Home Phone (Landline)
Cell Phone
Satellite Phone
POINTS OF CONTACT
Communication Satellite
Telephone Wires
Radio Waves
MEDIUMS
Mobile Telephone Switching Office
Local Switching Center
Cell Tower + Coverage Area
TRANSFER STATIONS

3. DRAW LINES TO MAKE THE DIRECT CONNECTIONS
MATCHING GAME
DRAW LINES TO MAKE THE DIRECT CONNECTIONS
Satellite Phone
DIRECTLY Connects to:
Through:
EXAMPLE
Local Switching Center
DIRECTLY Connects to:
Through:
Landline
DIRECTLY Connects to:
Through:
Cell Phone
DIRECTLY Connects to:
Through:
Cell Tower
DIRECTLY Connects to:
Through:
Mobile Telephone Switching Office
DIRECTLY Connects to:
Through:

4. TELECOMMUNICATION NETWORKS
1) Home to a Home using landline phones:
Same Area Code
Different Area Code

5. TELECOMMUNICATION NETWORKS
2) Cell Phone to Cell Phone
Same Cell Tower Area
Different Cell Tower Area

6. TELECOMMUNICATION NETWORKS
3) Landline to a Cell Phone

7. TELECOMMUNICATION NETWORKS
4) Cell Phone to Satellite Phone

8. Telecommunications
What is Telecommunications? Give some examples for both pre and post electricity:
How do landline phones work?
How do cell phones work? What type of waves do they use?
What are the different components of the cell phone system?
How does a satellite phone work?
How do you think features like text messages, GPS, and internet work on cell phones?

9. 857 508 413 617 Instructions: LEGEND Local Switching Center
LSC 508
MTSO 617
LSC 857
LSC 413
MTSO
508
MTSO 857
5 – Determine the path a call would take from a 617 cell phone to a satellite phone in 413
Instructions:
1 – Draw a house in each Area Code, and connect the landline phones to the system
2 – Determine the path a call would take to go from a home in 617 to a home in 413
3 – Determine the path a call would take from a cell phone in 617 to a landline in 508
4 – Determine the path a call would take from a 857 cell phone to a 413 cell phone
LEGEND
MTSO 617
Local Switching Center
Telephone Wires
Mobile Telephone Switching Office
LSC 617
Radio Waves
Cell Tower
617