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

Answer: Zero!

Of course, by default, no ephones or listing numbers can register. Prior to carrying out nearly anything else, the pursuing configuration is necessary:


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

This let up to 4 phones to sign-up / be configured and 8 directory figures.

If you you should not do this, the router will not allow for ephones or ephone-dns to be established. Here is an example of what would come about:

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

The maximum selection of ephones and ephone-dns that can be configured is system dependent. Right here is an instance of my router that can guidance 30 telephones with up to 150 ephone-dns:

R1(config-telephony)#max-ephones ?

Highest telephones to support

R1(config-telephony)#max-dn ?

Most directory numbers supported

Cisco have a wonderful document exhibiting you how lots of ephones/dns are supported on precise platforms. Have a glance below

As an example, employing CME variation 4.3:
The 2801 supports 25 telephones 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 telephones and 720 ephone-dns

(There are others, you should refer to the url earlier mentioned for a entire record)

Cisco also suggest that you only empower the selection of ephones and ephone-dns for the quantity you have to have, not the most the system can support. The reason is that when a ephone / ephone-dn is produced, it takes advantage of up memory on the router. Never just build them since you can! Generate only what is needed.

To your achievement!