May 25, 2024

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

2 min read

How a lot of phones and directory figures can be configured on Cisco Unified Communications Supervisor Categorical by default?

Response: Zero!

Certainly, by default, no ephones or listing numbers can sign-up. Ahead of undertaking just about anything else, the next configuration is needed:

Router>enable

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

This allow up to 4 telephones to sign-up / be configured and 8 directory quantities.

If you don’t do this, the router will not make it possible for ephones or ephone-dns to be designed. Listed here is an example of what would materialize:

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

The highest variety of ephones and ephone-dns that can be configured is system dependent. In this article is an illustration of my router that can guidance 30 telephones with up to 150 ephone-dns:

R1(config-telephony)#max-ephones ?

Maximum telephones to aid

R1(config-telephony)#max-dn ?

Maximum directory numbers supported

Cisco have a fantastic doc demonstrating you how a lot of ephones/dns are supported on precise platforms. Have a look here

As an instance, making use of CME edition 4.3:
The 2801 supports 25 phones and 120 ephone-dns
The 2811 supports 35 telephones and 144 ephone-dns
The 2821 supports 50 phones and 192 ephone-dns
The 3845 supports 250 phones and 720 ephone-dns

(There are others, please refer to the link previously mentioned for a entire checklist)

Cisco also suggest that you only empower the number of ephones and ephone-dns for the selection you need, not the maximum the system can aid. The motive is that when a ephone / ephone-dn is created, it takes advantage of up memory on the router. You should not just build them since you can! Create only what is essential.

To your achievements!

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