| How many phones and directory numbers can be | | | | with up to 150 ephone-dns: |
| configured on Cisco Unified Communications Manager | | | | R1(config-telephony)#max-ephones ? |
| Express by default? | | | | Maximum phones to support |
| Answer: Zero! | | | | R1(config-telephony)#max-dn ? |
| Yes, by default, no ephones or directory numbers can | | | | Maximum directory numbers supported |
| register. Before doing anything else, the following | | | | Cisco have a great document showing you how many |
| configuration is required: | | | | ephones/dns are supported on specific platforms. |
| Router>enable | | | | Have a look here |
| Router#configure terminal | | | | As an example, using CME version 4.3: |
| Router(config)#telephony-service | | | | The 2801 supports 25 phones and 120 ephone-dns |
| Router(config-telephony)#max-ephones 4 | | | | The 2811 supports 35 phones and 144 ephone-dns |
| Router(config-telephony)#max-dn 8 | | | | The 2821 supports 50 phones and 192 ephone-dns |
| This allow up to 4 phones to register / be configured | | | | The 3845 supports 250 phones and 720 ephone-dns |
| and 8 directory numbers. | | | | (There are others, please refer to the link above for a |
| If you don't do this, the router will not allow ephones or | | | | full list) |
| ephone-dns to be created. Here is an example of | | | | Cisco also recommend that you only enable the |
| what would happen: | | | | number of ephones and ephone-dns for the number |
| R1(config)#ephone 1ephone tag 1 exceeds | | | | you require, not the maximum the platform can |
| max-ephones 0 | | | | support. The reason is that when a ephone / |
| R1(config)#ephone-dn 1dn 1 exceeds max-dn 0 | | | | ephone-dn is created, it uses up memory on the router. |
| The maximum number of ephones and ephone-dns | | | | Don't just create them because you can! Create only |
| that can be configured is platform dependent. Here is | | | | what is required. |
| an example of my router that can support 30 phones | | | | To your success! |