現在非常流行voip技術，這技術能讓企業節約電話費用。於是許多大企業都部署了voip網絡，從而減少傳統電話費用開銷。現在我爲大家介紹關於E1接入的voip—gateway的配置方法：
一、voip網絡的部署規劃（例如下圖）：
說明:分公司申請的是adsl網絡接入，總部公司用的是靜態公網ip地址。分公司的Cisco2611網關通過adsl接入，做NHRP over gre 隧道與總部Cisco3640設備相連。Cisco2611網關插有E1模塊，E1口接IPBX設備的E1口，IPBX模擬端口接普通電話機。總部通過Cisco3640作爲***服務器連接各個分公司***客戶端設備，總部內部部署了callmanger軟交換平臺，總部部署了一臺ASA5800語音網關，E1口連接IPBX設備。
今天簡單爲大家介紹怎麼配置分公司的gateway設備，總部的軟交換平臺的配置以後會陸續公佈。
hostname C2611_xxx
aaa new-model
!
!
aaa authentication login default local
aaa session-id common
enable secret 5 $1$v20f$0aedAx9Qqo4Qm2xqA6s7d.
!
username solink password 7 120A0A1B1B05072479787170
clock timezone GMT 8
voice-card 0
dspfarm
!
ip subnet-zero
!
!
!
vpdn enable !
vpdn-template
!
vpdn-group 1 /配置vpdn組
request-dialin
protocol pppoe
!
!
isdn switch-type primary-net5 /啓用ISDN 交換類型
!
!!
voice class codec 88 /配置語音編碼類型組
codec preference 1 g729r8
codec preference 2 g729br8
codec preference 3 g723ar63
codec preference 4 g723ar53
codec preference 5 g723r63
codec preference 6 g723r53
codec preference 7 g711ulaw
codec preference 8 g711alaw
!
!
!
controller E1 0/0
framing NO-CRC4 / 不校驗
clock source internal /設置始終端，如果設置不對，電話傳真會有問題
pri-group timeslots 1-31 /設置E1通道
!
!
!
!
interface Tunnel13
description link to HK-3640
ip address 10.13.0.102 255.255.255.0 /配置隧道地址
ip nhrp authentication test /設置NHRP驗證
ip nhrp map 10.13.0.1 x.x.x.x /設置NHRP單播映射視圖
ip nhrp map multicast x.x.x.x /設置NHRP組播映射視圖
ip nhrp network-id 100000 /設置網絡id號
ip nhrp holdtime 300 /設置超時時間
ip nhrp nhs 10.13.0.1 /設置NHRP服務器地址
tunnel source Dialer0 /設置源地址
tunnel destination x.x.x.x /設置遠端地址
tunnel key 500 /設置隧道key
!
interface Ethernet0/0
no ip address
ip nat outside
half-duplex
pppoe enable
pppoe-client dial-pool-number 1 /設置該端口pppoe撥號
!
interface Serial0/0:15 /設置虛擬ISDN接口
no ip address
no logging event link-status
isdn switch-type primary-net5 /設置ISDN 交換類型
isdn overlap-receiving T302 3000 /設置逐位接收等待時間
isdn not-end-to-end 64
isdn incoming-voice network /設置端口爲網絡端
isdn send-alerting
isdn sending-complete
no cdp enable
!
interface Ethernet0/1
ip address 192.167.102.1 255.255.255.0
half-duplex
ip nat inside
!
interface Dialer0 /設置虛擬模板
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
dialer pool 1
dialer-group 1
fair-queue 64 16 1
ppp authentication pap callin
ppp pap sent-username [email protected] password 7 075E731F1A5C4F
ip rtp reserve 2000 16383
!
router eigrp 2
network 10.13.0.0 0.0.0.255
network 192.167.102.0
no auto-summary
no eigrp log-neighbor-changes
!
ip nat inside source list 11 interface Dialer0 overload
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer0
no ip http server
ip pim bidir-enable
!
!
access-list 11 permit 192.167.102.0 0.0.0.255
!
call rsvp-sync
!
voice-port 0/0:15
cptone CN /設置編碼爲中國
bearer-cap Speech
!
dial-peer voice 8166 voip /設置撥號對等體
preference 1
destination-pattern .T
progress_ind alert enable 8
progress_ind progress enable 8
session target ipv4:10.10.10.28
tech-prefix 7100
dtmf-relay cisco-rtp rtp-nte h245-signal h245-alphanumeric
fax-relay ecm disable
fax rate 9600
fax protocol t38 ls-redundancy 1 hs-redundancy 1
!
dial-peer voice 15 voip
incoming called-number 8166T
voice-class codec 88
dtmf-relay cisco-rtp rtp-nte h245-signal h245-alphanumeric
fax-relay ecm disable
fax rate 9600
fax protocol t38 ls-redundancy 1 hs-redundancy 1
!
dial-peer voice 34 voip
preference 2
destination-pattern .T
progress_ind alert enable 8
progress_ind progress enable 8
session target ipv4:10.10.10.8
tech-prefix 7100
dtmf-relay cisco-rtp rtp-nte h245-signal h245-alphanumeric
fax-relay ecm disable
fax rate 9600
fax protocol t38 ls-redundancy 1 hs-redundancy 1
!
dial-peer voice 15 pots
destination-pattern 1111T
direct-inward-dial
port 0/0:15
!
dial-peer voice 33 pots
incoming called-number .T
direct-inward-dial
port 0/0:15
!