Which of the following are measurement standards for voice quality ?

below with respect to the AH ( the Authentication Header , Authentication Header ) and the ESP ( Encapsulating Securit Paload , the Encapsulating Security Payload ) described right there ____ .( Choose one or more )

The information displayed on the MSR router is as follows:
acl number 2000
rule 0 permit source 192.168.0.0 0.0.0.255
acl number 2002
rule 0 permit source 192.168.2.0 0.0.0.255
#
traffic classifier 2 operator and
if-match acl 2002
traffic classifier 1 operator and
if-match acl 2000
#
traffic behavior 2
queue af bandwidth pct 30
traffic behavior 1
queue ef bandwidth pct 30 cbs-ratio 25
#
qos polic test
classifier 1 behavior 1
classifier 2 behavior 2
#
interface GigabitEthernet0/1
port link-mode route
duplex full
speed 10
ip address 192.168.1.1 255.255.255.0
qos appl polic test outbound
When the traffic rate of the packets with the source addresses of 192.168.0.2 , 192.168.2.2 , and 192.168.3.2 are 4Mbps , 4Mbps , 6Mbps , and no other background traffic is forwarded from port G0/1_ .Then the following statement is correct _____

A company's PBX is connected to the operator's telephone network through an E1 line.Due to the company's expansion, it needs to be able to meet 50 concurrent voice calls.Need to apply for an E1 line ? ( Fill in Arabic numerals )

OLT issue register cancellation message 5 ONU issuing register_ACK message
3.The following statements about VLAN planning in the EPCNI network are correct: _____ ( choose one or more )