1.测试拓扑：
参照：http://www.clnchina.com.cn/associate_certs/2012/0823/21890.shtml
2.基本配置：
A.R1：
interface FastEthernet0/0
ip address 202.100.1.1 255.255.255.0
no shut
interface FastEthernet0/1
shut
interface FastEthernet0/1.10
encapsulation dot1Q 10
ip address 10.1.1.1 255.255.255.0
interface FastEthernet0/1.11
encapsulation dot1Q 11
ip address 1.1.1.1 255.255.255.0
ip dhcp pool telephonepool
network 1.1.1.0 255.255.255.0
default-router 1.1.1.1
option 150 ip 1.1.1.1
ip dhcp pool pcpool
network 10.1.1.0 255.255.255.0
default-router 10.1.1.1
B.Switch1:
int f0/1
sw trunk encapsulation dot1q
sw mode trunk
VLAN 10
name PC
vlan 11
name telephone
int rang f0/2 - 3
sw mode acc
sw acc vlan 10
switchport voice vlan 11
spanning-tree portfast
C.R2:
interface FastEthernet0/0
ip address 202.100.1.2 255.255.255.0
no shut
interface FastEthernet0/1
ip address 202.100.2.2 255.255.255.0
no shut
D.R3：
interface FastEthernet0/0
ip address 202.100.2.3 255.255.255.0
no shut
interface FastEthernet0/1
no shut
interface FastEthernet0/1.20
encapsulation dot1Q 20
ip address 20.1.1.1 255.255.255.0
interface FastEthernet0/1.22
encapsulation dot1Q 22
ip address 2.2.2.1 255.255.255.0
ip dhcp pool telephonepool
network 2.2.2.0 255.255.255.0
default-router 2.2.2.1
option 150 ip 2.2.2.1
ip dhcp pool pcpool
network 20.1.1.0 255.255.255.0
default-router 20.1.1.1
E.Switch2:
int f0/1
sw trunk encapsulation dot1q
sw mode trunk
VLAN 20
name PC
vlan 22
name telephone
int rang f0/2 - 3
sw mode acce
sw acc vlan 20
switchport voice vlan 22
spanning-tree portfast
3.动态路由配置：
A.R1：
route ospf 1
net 202.100.1.0 0.0.0.255 a 0
net 10.1.1.0 0.0.0.255 a 0
net 1.1.1.0 0.0.0.255 a 0
passive-interface f0/1.10
passive-interface f0/1.11
B.R2：
route ospf 1
net 202.100.1.0 0.0.0.255 a 0
net 202.100.2.0 0.0.0.255 a 0
C.R3：
route ospf 1
net 202.100.2.0 0.0.0.255 a 0
net 20.1.1.0 0.0.0.255 a 0
net 2.2.2.0 0.0.0.255 a 0
passive-interface f0/1.20
passive-interface f0/1.22
4.语音网关配置：
A.R1：
①.开启CME服务：
telephony-service
max-ephones 20
max-dn 100
ip source-address 1.1.1.1 port 2000
no auto-reg-ephone
②.电话号码设置：
ephone-dn 1
number 1001
ephone-dn 2
number 1002
③.设置自动注册：
telephony-service
auto-reg-ephone
auto assign 1 to 2
此时左边的两个电话直接能够互相拨打。
B.R3：
①.开启CME服务：
telephony-service
max-ephones 20
max-dn 100
ip source-address 2.2.2.1 port 2000
no auto-reg-ephone
②.电话号码设置：
ephone-dn 1
number 2001
ephone-dn 2
number 2002
③.设置手动注册：
ephone 1
mac-address 0002.17B7.DE38
type 7960
button 1:1
ephone 2
mac-address 00e0.f720.1c46
type 7960
button 1:2
此时右边的两个电话直接能够互相拨打。
5.语音网关远程呼叫配置：
A.R1：
dial-peer voice 1 voip
destination-pattern 20..
session target ipv4:2.2.2.1
B.R3：
dial-peer voice 1 voip
destination-pattern 10..
session target ipv4:1.1.1.1
此时左边和右边的四个电话都能互相拨打。
本文转自 碧云天 51CTO博客，原文链接：http://blog.51cto.com/333234/975606，如需转载请自行联系原作者
