Two Smart Ways to Configure Cisco IP Phones

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Before you install a Cisco Unified IP phone, you must decide how to configure the phone in your network. Then you can install the phone and verify its functionality. There are two smart ways to configure Cisco IP Phones provided by proficient Cisco fans.

Cisco IP Phones

The First Way to Configure a Cisco IP Phone

Router(config)#telephony-service setup—-Start

ipPhone configuration

—Cisco IOS Telephony Service Setup—

Do you want to setup DHCP service for your IP Phones? [Yes/no]: yes—configure DHCP

Configuring DHCP Pool for Cisco IOS Telephony Services:

IP network for telephony-

service DHCO Pool:

Subnet mask for DHCP network:

TFTP Server IP address (Option 150):

Default Router for DHCP Pool:

Do you want to start telephony-Service setup? [Yes/no]: yes—-

Configuring Cisco IOS Telephony Service:

Enter the IP source address for Cisco IOS Telephony Services:

Enter the Skinny Port for Cisco IOS Telephony Service: [2000]: —-Voice Port

How many IP Phones do you want to configure: [0]: 2

Do you want dual-line extensions assigned to phones? [Yes/no]: 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

11 Japanese

[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

15 Japan

[0]: 0

What is the first extension number you want configure: 800—-extension number

Do you have Direct-Inward-Dial service for all your phones? [Yes/no]: yes

Enter the full E.164 number for the first phone: 888

Do you want to forward calls to a voice message service? [Yes/no]: yes —-voice message

Enter extension or pilot number of the voice message service: 899

Call forward No Answer Timeout: [18]:

Do you wish to change any of the above information? [yes/no]: no —-no change

CNF-FILES: Clock is not set or synchronized,


Retaining old versionStamps

—-Setup completed config—


*Mar 1 00:23:46.743: %LINK-3-

UPDOWN: Interface ephone_dsp DN 1.1, changed state to up

*Mar 1 00:23:46.747: %LINK-3-

UPDOWN: Interface ephone_dsp DN 1.2, changed state to up

*Mar 1 00:23:46.747: %LINK-3-

UPDOWN: Interface ephone_dsp DN 2.1, changed state to up

*Mar 1 00:23:46.751: %LINK-3-

UPDOWN: Interface ephone_dsp DN 2.2, changed state to up

Router#show run

Building configuration…


Ip dhcp pool ITS



Option 150 ip





Max-ephones 2

Max-dn 2

Ip source-address port 2000

Auto assign 1 to 2

Create cnf-files version-stamp Jan 01 2002 00:00:00

Dialplan-pattern 1 8.. extension-length 3

Voicemail 899

Max-conferences 4 gain -6

transfer-system full-consult



Ephone-dn 1 dual-line

Number 800

Call-forward busy 899

Call-forward noan 899 timeout 18



Ephone-dn 2 dual-line number 801

Call-forward busy 899

Call-forward noan 899 timeout 18



Ephone 1




Ephone 2




Line con 0

Line aux 0

Line vty 0 4





Router#show telephony-service?

Admin Show telephony-

Service admin username and password

All Show telephony-service details

Dial-peer Show telephony-service dialpeers

Directory-entry Show telephony-service directory-entry

Ephone Show ephone configuration

Ephone-template Show ephone-

Template configuration

Tftp-bindings Show telephony-service tftp-

Server bindings

Voice-port Show telephony-service voice ports

|Output modifiers


Router#show telephony-service

CONFIG (Version=3.3)


Version 3.3

Cisco CallManager Express

For on-line documentation please see:

ip sourc-address port 2000

max-ephones 2

maxx-dn 2

max-conferences 4 gain -6

dspfarm units 0

hunt-group report delay 1 hours

max-redirect 5

dialplan-pattern 1 8.. extension-length 3

voicemail 899

time-format 12

date-format mm-dd-yy

timezone 0 Greenwich Standard Time

keepalive 30

timeout interdigit 10

timeout busy 10

timeout ringing 180

caller-id name-only: enable

edit DN through Web: disabled.

Edit TIME through web: disabled.

Log (table parameters):

Max-size: 150

Retain-timer: 15

Create cnf-fils version-stamp Jan 01 2002 00:00:00

Transfer-system full-consult

Auto assign 1 to 2

Local directory service: enabled.


The Second Way to Configure Cisco IP Phones

The first step: to Configure DHCP

R1(config)#ip dhcp pool CME

R1(dhcp-config)#network /24


DHCP pool configuration commands:

Accounting Send Accounting Start/Stop messages

Bootfile Boot file name

class Specify a DHCP class

client-identifier Client identifier

client-name Client name

default-router Default routers

dns-server DNS servers

domain-name Domain name

exit Exit from DHCP pool configuration mode

hardware-address Client hardware address

host Client IP address and mask

import Programatically importing DHCP option parameters

Lease Address lease time

Netbios-name-server NetBIOS (WINS) name servers

Netbios-node-type NetBIOS node type

Network Network number and mask

Next-server Next server in boot process

No Negate a command or set its defaults

Option Raw DHCP options

Origin Configure the origin of the pool

Relay Function as a DHCP relay

Subnet Subnet allocation commands

Update Dynamic updates

Utilization Configure various utilization parameters

Vrf Associate this pool with a VRF


R1(dhcp-config)#option 150 ip


The second step: to configure telephony service


R1(config-telephony)#max-ephones 2

R1(config-telephony)#max-dn 2

R1(config-telephony)#auto assign 3 to 4

R1(config-telephony)#ip source-address port 2000


The third Step: to configure ephone

R1(config)#ephone-dn 1

R1(config-ephone-dn)#number 111


R1(config)#ephone-dn 2

R1(config-ephone-dn)#number 112


More Related Cisco IP Phone Tips:

How to Configure a Cisco Unified IP Phone 7921 with Call Manager Express?

Top 5 VoIP Concepts to Know for CCNA Voice—VoIP Basic for CCNA Voice Exam

DHCP Option 150 & DHCP Option 66

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