Lesson 12 - PBX System Components Flashcards
The PBX controls what three functions?
- local in-company dialing
- local calls off the premises
- long distance calls.
List three differences between the CO and PBX.
- Private vs. public use.
- PBX maintains a lower level of service protection. CO’s require 7-digit number; PBX less numbers.
- PBS restricts stations or groups from services/features.
Which are the three main components of the PBX?
- traffic studies/CO lines/stations
- system backup/stations/CO lines
- features/stations/CO lines
d. common equipment/station/CO lines
d. common equipment/station/CO lines
Define CPU
a. Call Processing Unit
b. Common Processing Unit
c. Conference Programming Unit
d. Central Processing Unit
d. Central Processing Unit
Describe two ways data is restored to the CPU after a system reboot or a power failure.
hard drives and PCMCIA
Describe the purpose of the D-mark.
The dividing line between Telco and the customer -
- where public switched telephone network ends and connects with the customer’s on-premises wiring
What is the most common trunk used by the PBX system?
a. loop start
b. ground start
c. tie line trunks
d. T1 trunks
b. ground start
To seize dial tone with a ground start trunk, a technician temporarily grounds the _?) side of the circuit.
ring
What is the transmission speed of a T1 circuit?
a. 1.54 Mbps
b. 1.44 Mbps
c. 154 Mbps
d. 144 Mbps
a. 1.54 Mbps
ISDN circuits use ? technology to transmit voice and data signals.
a. analog
b. digital
c. analog and digital
d. wireless
b. digital
++TEST - Direct Inward Dial circuits are used for incoming and outgoing calls. True or False?
False
Similarly configured trunks pooled together are called ?
a. trunk access
b. trunk types
c. trunk circuits
d. trunk groups
d. trunk groups
List four types of pooled trunk types.
ISDN
Private lines
VoIP
Paging
Digital and analog telephones use what two pins on the 468A or 568B outlets?
a. 4/5
b. 3/4
c. 1/2
d. 5/6
a. 4/5
Which two methods are used to access PBX system features?
dial and code *62
Dedicated button features
? is the feature mostly used when the called party does not directly answer the phone.
voice mail
This feature allows the caller to automatically be greeted and prompts the call to the company directory.
a. paging system
b. voice mail
c. call detail recording
d. auto attendant
d. auto attendant
Which PBX software feature controls access to system features for all telephones?
a. class of service
b. trunk restrictions
c. tandem trunks
d. operates console
a. class of service
A(n) ? allows any user in the PBX to call any extension in any networked PBX with minimum dialed digits.
a. restricted trunk access
b. tandem trunk access
c. uniform dialing plan
d. voice mail system
c. uniform dialing plan
When all outgoing trunks are busy, which feature allows the caller to reserve the next available trunk?
a. call detail recording
b. trunk queuing
c. restriction access
d. trunk pool
b. trunk queuing
All system programming, diagnostics and traffic analysis functions are accomplished through which method?
a. tape drive backup
b. system management
c. maintenance telephone
d. attendant console
b. system management
Which PBX system feature controls long distance costs?
a. trunk pools
b. tandem trunks
c. amount of trunks
d. automatic route selection
d. automatic route selection
Which PBX system listed below has less blocking?
a. P.01 Grade of Service
b. P.03 Grade of Service
c. P.05 Grade of Service
d. P.10 Grade of Service
a. P.01 Grade of Service
