VoIP Part 2 How to setup Call Manager Express
Call Manager Express (CME) is a router based VoIP solution currently supporting up to 240 phones. It provides many of the features of Call Manager for a small business.
CME is based on router IOS. So no need to buy extra hardware - you require a version of IOS that supports CME on a voice enabled Cisco router. You will also need to download the phone firmware and GUI files into flash on the router. CME can be configured directly using the IOS without any other files. However, the phones will use whatever firmware they already have which may not give you the functionality you require.
To get your phones to use the firmware that is current with your version of CME, you will need to extract the basic.tar (or zip) into flash which will provide you with the relevant firmware and GUI files. CME GUI will not work without these files and neither will the Cisco Unity Express (CUE) GUI if you have one installed.
For example, you should extract cme-basic-4.0.0.1.tar into flash for instance for my IOS (c2800nm-ipvoicek9-mz.124-9.T.bin). Refer to the Compatibility matrix for latest cme software versions.
The 7970s and 7961s for example require more files than a 7960 (see compatibility matrix above)
On of the easiest way to set a basic system is to run the telephony-service setup wizard. This will allow you to set your IP phones and get them registered with the router. More complicated configurations will be discussed in the coming months.
In this example, I am going to configure 5 phones on my CME system.
Basic CME Setup:
R1#conf t
!=== Enter global configuration mode
!=== Enter global configuration mode
R1(config)#telephony-service setup
!=== Start the CME wizard. If you have previously entered the telephony-service
command, you will have to remove it before running this command. Be careful - removing
the telephony service will remove config from you router.
!=== Start the CME wizard. If you have previously entered the telephony-service
command, you will have to remove it before running this command. Be careful - removing
the telephony service will remove config from you router.
The following questions will be asked and your responses will determine the configuration that is generated.
Do you want to setup DHCP service for your IP phones? [yes/no]:yes
IP network for telephony-service DHCP Pool:10.1.1.0
Subnet mask for DHCP network :255.255.255.0
TFTP Server IP address (Option 150) :10.1.1.1
Default Router for DHCP Pool :10.1.1.1
Subnet mask for DHCP network :255.255.255.0
TFTP Server IP address (Option 150) :10.1.1.1
Default Router for DHCP Pool :10.1.1.1
Do you want to start telephony-service setup? [yes/no]:yes
Enter the IP source address for Cisco CallManager Express:10.1.1.1
Enter the Skinny Port for Cisco CallManager Express: [2000]:2000
Enter the Skinny Port for Cisco CallManager Express: [2000]:2000
How many IP phones do you want to configure : [0]: 5
Do you want dual-line extensions assigned to phones? [yes for dual-line
/ no for single-line]:yes
/ no for single-line]:yes
What language do you want on IP phones?
0 English
1 French
2 German
3 Russian
4 Spanish
5 Italian
6 Dutch
7 Norwegian
8 Portuguese
9 Danish
10 Swedish
[0]:0
0 English
1 French
2 German
3 Russian
4 Spanish
5 Italian
6 Dutch
7 Norwegian
8 Portuguese
9 Danish
10 Swedish
[0]:0
Which Call Progress tone set do you want on IP phones :
0 United States
1 France
2 Germany
3 Russia
4 Spain
5 Italy
6 Netherlands
7 Norway
8 Portugal
9 UK
10 Denmark
11 Switzerland
12 Sweden
13 Austria
14 Canada
[0]:9
0 United States
1 France
2 Germany
3 Russia
4 Spain
5 Italy
6 Netherlands
7 Norway
8 Portugal
9 UK
10 Denmark
11 Switzerland
12 Sweden
13 Austria
14 Canada
[0]:9
What is the first extension number you want to configure :[0]:1000
Do you have Direct-Inward-Dial service for all your phones? [yes/no]:yes
!=== If you answer yes to the previous question, you see the following prompt:
Enter the full E.164 number for the first phone:02071231000
Enter the full E.164 number for the first phone:02071231000
Do you want to forward calls to a voice message service? [yes/no]:yes
!=== If you answer yes to the previous question, you see the following prompt:
Enter the extension or pilot number of the voice message service:1999
Enter the extension or pilot number of the voice message service:1999
Call forward No Answer Timeout: [18]:10
Do you wish to change any of the above information? [yes/no]:no
The router will automatically generate the required configuration. All you will now need to do is plug the IP phones into the network and they will auto register.
Watch the video to see the configuration working:
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The router will automatically be configured with config as follows:
telephony-service
max-ephones 10
max-dn 10
ip source-address 10.1.1.1 port 2000
auto assign 1 to 10
network-locale GB
create cnf-files version-stamp Jan 01 2002 00:00:00
dialplan-pattern 1 020712311.. extension-length 3
voicemail 199
max-conferences 8 gain -6
transfer-system full-consult
!
!
ephone-dn 1 dual-line
number 100
call-forward busy 1000
max-ephones 10
max-dn 10
ip source-address 10.1.1.1 port 2000
auto assign 1 to 10
network-locale GB
create cnf-files version-stamp Jan 01 2002 00:00:00
dialplan-pattern 1 020712311.. extension-length 3
voicemail 199
max-conferences 8 gain -6
transfer-system full-consult
!
!
ephone-dn 1 dual-line
number 100
call-forward busy 1000
ephone 1
I will be explaining these commands and many more in upcoming newsletters, but lets introduce the concept of Ephones and Ephone-dns...
Ephones & Ephone-dns explained:
An ephone is the the way you configure a physical phone/handset in CME. The physical phone is matched to the configuration by its MAC address.
An ephone-dn is a telephone number/directory number/line on an ephone. You can have multiple ephone-dns on a single ephone depending on the model of phone. A 7960 for instance could have 6 ephone-dns on it.
The IP Phones will now be able to call each other once they are plugged in and auto register.
This is only a basic setup. I will continue discussing the options in CME in the coming months as well as giving detailed information on the commands used and created.
Thanks,
D.K
Tags: VOIP
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