PBX System Components

Question 1

The PBX controls what three components?

Answer 1

• connecting circuits between the telephones 2 sets of users
• mapping a dialed number
• provide info for accounting services

Question 2

List 3 differences between PBX and CO

Answer 2

• pbx is private while co is public.
• PBX has console station transfers internally, CO uses operator
• PBX doesn’t maintain high level of service operation, CO back up power and battery

Question 3

Which are the 3 main components of the PBX

Answer 3

common equipment
station
CO lines

Question 4

CPU

Answer 4

central processing unit

Question 5

what are 3 ways data is restored to the CPU after a system reboot or power failure

Answer 5

Internal hard drives
external tape drives
PCMCIA cards

Question 6

what is the most common trunk used by the PBX system

Answer 6

ground start

Question 7

to seize dialtone with a ground start trunk a technician temporarily grounds the _________ of the circuit

Answer 7

ring conductor

Question 8

what is the transmission speed of a T1 circuit

Answer 8

1.54 Mbps

Question 9

ISDN circuits use _____________technology to transmit voice and data signals

Answer 9

digital

Question 10

can direct inward dialing circuits be used for incoming and outgoing calls?

Answer 10

no

Question 11

similarly configured trunks pooled together are called?

Answer 11

trunk groups

Question 12

list four types of pooled trunk types

Answer 12

ISDN
Private lines
VoIP
T1

Question 13

Digital and analog telephones use what two pins on the 568A and 568 B outlets

Answer 13

4 and 5

Question 14

Which two methods are used to access PBX system features

Answer 14

dial code 62

dedicated button features

Question 15

_____is the most common feature when the dialed party does not directly answer the telephone

Answer 15

voicemail

Question 16

this feature allows the caller to automatically be greeted and prompts the call to the company directory

Answer 16

auto attendant

Question 17

which PBX software feature controls access to system features for all telephones

Answer 17

class of service

Question 18

a ______ allows any user in the PBX to call any extension in any networked PBX with minimum dialed digets

Answer 18

uniform numbering plan

Question 19

when outgoing trunks are busy which feature allows the caller to reserve the next available trunk

Answer 19

trunk queuing

Question 20

all system programming , diagnostics and traffic analysis functions are accomplished through which method?

Answer 20

system management

Question 21

which PBX system feature controls long distance costs?

Answer 21

automatic route selection