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

How lots of phones and listing quantities can be configured on Cisco Unified Communications Manager Categorical by default?

Answer: Zero!

Certainly, by default, no ephones or listing numbers can sign up. Prior to executing anything at all else, the pursuing configuration is needed:

Router>enable

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

This allow up to 4 telephones to register / be configured and 8 directory figures.

If you really don’t do this, the router will not let ephones or ephone-dns to be developed. Listed here is an case in point of what would take place:

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

The greatest range of ephones and ephone-dns that can be configured is system dependent. Right here is an illustration of my router that can help 30 telephones with up to 150 ephone-dns:

R1(config-telephony)#max-ephones ?

Highest phones to help

R1(config-telephony)#max-dn ?

Maximum directory quantities supported

Cisco have a great doc showing you how lots of ephones/dns are supported on particular platforms. Have a appear right here

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

(There are other individuals, you should refer to the website link higher than for a entire record)

Cisco also suggest that you only enable the amount of ephones and ephone-dns for the number you need, not the greatest the platform can assistance. The rationale is that when a ephone / ephone-dn is created, it works by using up memory on the router. You should not just create them because you can! Make only what is necessary.

To your success!