Acompany switches to a voip pbx network from the traditional pbx system. the network utilizes the sip protocol for all the communications. however, the network technician has been receiving complaints from the users that they are unable to call. upon troubleshooting, the network administrator finds that the firewall is blocking the required ports. which of the following ports should be opened on the firewall for proper communication?

None. the wood chuck riddle says if he could chuck wood so the answers none

The health and well being of people employed in a work environment.

Evidenceinformation gathered from credible research sources that a speaker support his or her claims.encyclopediaa reference work that offers relatively brief entries providing background information on a wide range of alphabetized topics.peer reviewthe act of subjecting articles submitted to a scholarly journal to critical readings by other experts in a particular field.dictionarya reference work that offers definitions, pronunciation guides, and sometimes etymologies for wordsquotation booka reference work offering famous or notable quotations on a variety of subjectswhat advantages do libraries offer over the internet? libraries allow you access to strong evidence and credible sources that are not available on web sites.describe the advantages and disadvantages of internet research.advantages: allows you convenient access to information on nearly any topic & offers speed-- enabling you to track down a news report or a research finding almost instantly from anywhere in the world. and puts an immense volume of information at our fingertipsdisadvantages: books may not be available online from credible sources, may cost money. cannot assume that information online is credible. anyone can create a website or blog about a topic! what four key characteristics determine a source's credibility? capacityrecency

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