下面是Cisco 3640的VOIP配置，结构是台北和上海两地做VOIP,后接阿尔卡特的PBX,里面有很多需要注重的地方。
台北配置代码:
Taipei#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime（设定Debug跟踪日志显示其时间）
service timestamps log uptime（设定看Log时显示其时间）
no service passWord-encryption（口令不加密）
!
hostname Taipei（主机名）
!
enable secret 5 $1$R.66$z.BUjhNsJcIr8KCcS9uxG.
!
!
!
!
!
voice-card 1（定义语音卡1）
!
voice-card 3（定义语音卡3）
!
ip subnet-zero
no ip domain-lookup
!
isdn voice-call-failure 0
!
!
!
!
controller E1 1/0（配置 E1语音卡）
framing NO-CRC4
ds0-group 0 timeslots 1-15,17-31 type e&m-wink-start（定义语音卡的类型为E&M卡）
cas-custom 0
!
controller E1 3/0（配置 E1语音卡）
framing NO-CRC4
ds0-group 0 timeslots 1-15,17-31 type e&m-wink-start（定义语音卡的类型为E&M卡）
cas-custom 0
!
!
!
interface BRI0/0
no ip address
no ip directed-broadcast
shutdown
isdn guard-timer 0 on-eXPiry accept
!
interface FastEthernet0/0
no ip address
no ip directed-broadcast
shutdown
duplex auto
speed auto
!
interface Serial0/0
description "Link to MainLand_ShangHai by NCIC lease line"
ip address 192.168.1.1 255.255.255.252
no ip directed-broadcast
no ip mroute-cache
no fair-queue
!
interface Serial0/1
no ip address
no ip directed-broadcast
shutdown
clockrate 2000000
!
ip classless
no ip http server
!
!
voice-port 1/0:0（配置模拟语音端口）
compand-type a-law
!
voice-port 3/0:0（配置模拟语音端口）
compand-type a-law
!
dial-peer voice 1 voip （定义拨号对等体到语音）
destination-pattern +445...（为拨号对等体分配电话号码，其中.为通配符）
session target ipv4:192.168.1.2（定义Voip路由，为对端的IP地址）
req-qos guaranteed-delay （语音数据流RVSP的保证，其中Guaranteed-dealy可用于保证整个网络的延时）
ip precedence 5（IP优先级，5为要害）
!
dial-peer voice 2 pots（定义拨号对等体到语音物理端口）
destination-pattern +3...（定义电话话码以3开头的）
port 1/0:0（定义语音端口）
!
dial-peer voice 3 pots（定义拨号对等体到语音物理端口）
destination-pattern +3...（定义电话话码以3开头的）
port 3/0:0（定义语音端口）
!
!
line con 0（设定登陆）
transport input none
line aux 0
line vty 0 4（答应用Telnet）
password cisco（口令为Cisco)
login
!
end
Taipei#
上海一方的3640配置代码：
ShangHai#sh run
Building configuration...
Current configuration:
!
version 12.0
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname ShangHai
!
enable secret 5 $1$dB/c$tnrMU9IxFCJdix5ssHAdH/
!
!
!
!
!
voice-card 1
!
voice-card 2
!
ip subnet-zero
no ip domain-lookup
!
isdn voice-call-failure 0
!
!
!
!
controller E1 1/0
framing NO-CRC4
ds0-group 0 timeslots 1-15,17-31 type e&m-immediate-start
cas-custom 0
!
controller E1 2/0
framing N
ds0-group 0 timeslots 1-15,17-31 type e&m-immediate-start
cas-custom 0
!
!
!
interface BRI0/0
no ip address
no ip directed-broadcast
encapsulation ppp
isdn guard-timer 0 on-expiry accept
ppp multilink
!
interface FastEthernet0/0
no ip address
no ip directed-broadcast
shutdown
duplex auto
speed auto
!
interface Serial0/0
no ip address
no ip directed-broadcast
no ip mroute-cache
shutdown
no fair-queue
clockrate 2000000
!
interface Serial0/1
ip address 192.168.1.2 255.255.255.252
no ip directed-broadcast
!
ip classless
!
no ip http server
!
!
voice-port 1/0:0
compand-type a-law
!
voice-port 2/0:0
compand-type a-law
!
dial-peer voice 20 voip
destination-pattern +3...
session target ipv4:192.168.1.1
req-qos guaranteed-delay
ip precedence 5
!
dial-peer voice 10 pots
destination-pattern +448...
port 1/0:0
!
dial-peer voice 30 voip
destination-pattern +4...
session target ipv4:192.168.1.1
req-qos guaranteed-delay
ip precedence 5
!
dial-peer voice 40 pots
destination-pattern +449...
port 2/0:0
!
!
line con 0
transport input none
line aux 0
line vty 0 4
password cisco
login
!
end
ShangHai#
(完)
