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Cisco CCNA Voice Certification Examination Tutorial – Default Max Ephone and Ephone-dn and Configurations

What number of telephones and listing portions may be configured on Cisco Unified Communications Supervisor Particular by default?

Response: Zero!

Positive, by default, no ephones or itemizing portions can enroll. Proper earlier than finishing up absolutely anything else, the following configuration is anticipated:

Router>allow

Router#configure terminal
Router(config)#telephony-services
Router(config-telephony)#max-ephones 4
Router(config-telephony)#max-dn 8

This permit as much as 4 telephones to register / be configured and eight listing figures.

In the event you actually do not do that, the router is not going to permit ephones or ephone-dns to be established. Right here is an instance of what would happen:

R1(config)#ephone 1
ephone tag 1 exceeds max-ephones
R1(config)#ephone-dn 1
dn 1 exceeds max-dn

The very best vary of ephones and ephone-dns that may be configured is system dependent. Proper right here is an instance of my router that may assist 30 telephones with as much as 150 ephone-dns:

R1(config-telephony)#max-ephones ?

Utmost telephones to help

R1(config-telephony)#max-dn ?

Biggest itemizing figures supported

Cisco have a glorious doc demonstrating you ways fairly a couple of ephones/dns are supported on distinctive platforms. Have a glimpse proper right here

As an example, making use of CME mannequin 4.3:
The 2801 helps 25 telephones and 120 ephone-dns
The 2811 helps 35 telephones and 144 ephone-dns
The 2821 helps 50 telephones and 192 ephone-dns
The 3845 helps 250 telephones and 720 ephone-dns

(There are people, bear in mind to consult with the backlink earlier talked about for a whole record)

Cisco additionally advocate that you simply solely assist the variety of ephones and ephone-dns for the range it’s important to have, not the optimum the system can help. The trigger is that when a ephone / ephone-dn is developed, it makes use of up reminiscence on the router. By no means simply generate them just because you possibly can! Generate solely what’s demanded.

To your accomplishment!