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Question :-

A technician is rolling out IP softphones in phases to telecommuters. During the pilot and initial production deployment, no problems were noted. But after a major increase in the number of remote users, all callers begin to complain of voice quality issues, while main site users experience no issues. Which of the following should the technician investigate? (Select TWO)
Network Address Translation (NAT) configurations
Firewall port and CPU utilization
IP PBX port and CPU utilization
Bandwidth utilization on Internet circuit
Softphone QoS settings

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