What does hooked up mean?

[Stupy]

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #604 "Real Life: Telecommunications (1)", question 3

I am getting my phone ......... up at the beginning of next week. Until then, you can call my parents and they will give me the message.

(a) fixed
(b) jacked
(c) linked
(d) hooked

English Language Proficiency Tests, Advanced Level

ESL/EFL Test #604 "Real Life: Telecommunications (1)", answer 3

I am getting my phone hooked up at the beginning of next week. Until then, you can call my parents and they will give me the message.

Correct answer: (d) hooked

Your answer was: incorrect
I am getting my phone fixed up at the beginning of next week. Until then, you can call my parents and they will give me the message.
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would you please explain me the meaning of hook up here,thanks a lot

English Learner fina

[Mister Micawber]

Hooked up = connected to the public telephone system; made functional
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Native English teacher at Mister Micawber's

[Puppet]

Hi,

I didn't catch you, Mr. Mecawber?

Is it under repair or it might mean the outside calls will be answered by one main line and from there, the receiver can put him on the wanted internal line.

I guess that called "PBX system" ... though!

[Mister Micawber]

No, no, it is just a simple telephone, but it hasn't been connected to the world telephone system yet.
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Native English teacher at Mister Micawber's

[Puppet]

Hi,

You mean a telephone device has been installed say 'at home' but still not in service.

[Mister Micawber]

Yes, but the normal process is that the phone company brings the device and installs it and puts it into service all at one time.
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Native English teacher at Mister Micawber's

[Puppet]

Thank you, sir.