《融合通信技術》筆記整理
融合通信是指,把計算機技術與傳統通信技術融合一體的新通信模式,既融合計算機網絡與傳統通信網絡在一個網絡平臺上,實現電話、傳真、數據傳輸、音視頻會議、呼叫中心、即時通信等衆多應用服務。而在融合通信中,網絡電話(VoIP)是其中的重點。
一、show命令
show diag 查看硬件資源
show version 查看軟件資源
show voice dsp detail 查看DSP資源
show voice port summary 查看全部語音接口
show dial peer voice summary 查看語音路由
show run 顯示配置信息
show ip route 顯示路由信息
show ip int bri 查看接口狀態及ip地址
Show controller e1/t1 0/0/0查看配置信息
Show interface s0/0/0:0子接口 查詢寬帶大小
show isdn status 顯示所有 ISDN 接口或特定 ISDN 接口的狀態
show network clocks查看網絡時鐘選擇。
二、模擬語音(fxs——fxo ,rj11)
1、S(link—state)鏈路狀態路由選擇協議——OSPF
DV(distance—vector)距離矢量路由選擇協議——RIP
網絡層:路由轉發
路由:多餘路由的控制層面(control panel)就是形成路由在數據沒有到達之前完成,這是工作的第一層面,也就是基礎工作。
轉發:路由器形成路由的目的是當有數據包過來時,路由依賴FIB,轉發數據。
Cisco語音方向發展階段
模擬—數字—VOIP—統一通信—協作
PSTN(Public Switched telephone network)公用交換電話網
模擬信號 —— 數字信號 modem 調制解調器
Ring-down 振鈴電路
PCM(Pulse code modulation)採集、量化、編碼
2、POTS(plain old telephone service):將號碼撥打的號碼串映射到本地網關上的具體語言接口,可以將網關連接到PSTN,PBX或模擬電話。
3、VOIP(voice over ip)將號碼映射到終結呼叫的目的VOIP設備的IP地址或DNS名稱,用於VOIP協議,比如H.323和STP。
4、 MMOIP(multimedia mail over ip)將號碼映射到SMIP服務器的郵件地址用於儲存和轉發傳真。
5、最常見的Dial Peer 類型
POTS(plain old telephone service) 這類Dial peer將用戶撥打的號碼串映射到本地網關上的具體語音網關。這個語音接口將網關連接到PSTN、PBX或模擬電話
VoIP(Voice over IP)這類Dial peer 將號碼映射到終端呼叫的目的VoIP設備的IP地址或DNS名稱,用於VoIP協議,比如H323和Sip。
MMoIP(Multimedia Mail over IP) 這類Dial peer 將號碼映射到SMTP服務器的郵件地址,用於儲存和轉發傳真。
6、匹配號碼串特殊表達式:
0~9、A~D、*、#:顯示在撥號標準鍵盤上的標準字符:數字0~9,字母A~D星號*和井號;
+:用於字符串的首位時,表明這個字符串是E.164標準號碼,否則表示該符號的字符chuxian1次或多次;
.:匹配任意字符(用作通配符);
%:表示該符號前的字符出現0次或多次;
?:表示該符號前的字符出現0次或1次;
^:匹配字符串的開始;
$:匹配字符串的結束;
T:計時器字符,表明這是一個變長的字符串。告訴路由器在進行呼叫路由轉發前需要等待一段時間直到收集到所有字符爲止。
\:後面跟隨單一字符,並匹配該字符。
[]:表示一個指定的範圍。
():表示一個特的範圍。
7、常見的呼叫進行音:
撥號音(dial tone):表示CO電話公司已做好從用戶電話接受號碼的準備;
忙音(busty tone):表示由於遠端電話已在使用中,因此不能完成呼叫;
回鈴音(ring-back tone):表示電話公司正在嘗試爲用戶完成呼叫;
擁塞(congestion):電話擁塞,不能完成呼叫;
重播音(recorder tone):重新撥號;
聽筒摘機音(receiver off-hook tone):表示電話的聽筒已經在很長的時間處於 摘機狀態;
空號音(no such number tone):找不到用戶撥打號碼。
8、FXS(foreign exchange station):終端設備
FXO(foreign exchange office):中繼(trunk)接口
9、local loop-start(本地環路啓動):
control panel
a、摘機:電話—R,on-hook——off-hook,FXS 0/1/0 IN-STATUS 管理信令,R收到信令變化後,R發出dial-tone(撥號音)信息信令;
b、撥號:地址信令(DTMF);
c、R收到地址信令,通過dialplan(dial-peer)尋址找到相應的出接口;
d、R給相應出接口一個信令ringring FXS OUT-STATUS 管理信令;
e、對方摘機,on-hook——off-hook FXS 0/1/1 IN-STATUS 管理信令
———正常通話 media pannel——
雙方掛機 off-hook——on-hook
10、 相關命令及其對應含義
dial-peer voice tag pots 配置dial-peer,在傳統語音中,dial- peer爲號碼與接口對應關係。
pref xx 、forward-digits all、no digit-strip:防止號碼摘除命令。
timeouts interdigit x :修改位間超時,默認爲10秒。
ring-num x:fxo口應答次數,也就是對方聽到回鈴音次數。
connection plar opx xxx :fxo口不掛斷。
connection plar xxx :熱線,用在fxs口熱線配置中。
num-exp 1 1001 :速撥,撥打1代替1001。
CME-Rack7 (config-voiceport)# cptone cn(CPtone 改爲爲CN)
CME-Rack7 (config-voiceport)# signal groundstart(trunk鏈路信令 爲groundstart)
11、 三網融合:電信網、廣電網、互聯網 voice vedio data
NGN(Next Genteration Network):下一代網絡 1024k=1M 1024M=1G
IP(Internet Protocd):網際協議
Voice 通過IP搭建在data上
(一)本地環路啓動模擬語音實驗
1、拓撲圖:
2、命令
CME-Rack7(config)#dial-peer voice 1 pots
CME-Rack7(config-dial-peer)#destination-pattern 7001
CME-Rack7(config-dial-peer)#port 0/1/0
CME-Rack7(config-dial-peer)#end
CME-Rack7#config t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config)#dial-peer voice 2 pots
CME-Rack7(config-dial-peer)#destination-pattern 7002
CME-Rack7(config-dial-peer)#port 0/1/1
CME-Rack7(config-dial-peer)#end
(二)遠程環路啓動模擬語音實驗
1、 邏輯拓撲圖
2、命令
R7:
CME-Rack7#config t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config)#dial-peer voice 1 pots
CME-Rack7(config-dial-peer) #destination-pattern 7001
CME-Rack7(config-dial-peer) #port 0/1/0
CME-Rack7(config-dial-peer) #exit
CME-Rack7(config)#dial-peer voice 2 pots
CME-Rack7(config-dial-peer) #destination-pattern 8001
CME-Rack7(config-dial-peer) #port 0/2/0
CME-Rack7(config-dial-peer) #forward-digits all
CME-Rack7(config-dial-peer) #exit
CME-Rack7(config)#voice-port 0/2/0
CME-Rack7(config-voiceport) #connection plar opx 7001
CME-Rack7(config-voiceport) #end
CME-Rack7#show dial-peer voice summary
dial-peer hunt 0
AD PRE PASS OUT
TAG TYPE MIN OPER PREFIX DEST-PATTERN FER THRU SESS-TARGET STAT PORT KEEPALIVE
1 pots up up 7001 0 up 0/1/0
2 pots up up 8001 0 up 0/2/0
R8:
CME-Rack8#config t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#dial-peer voice 1 pots
CME-Rack8(config-dial-peer) #destination-pattern 8001
CME-Rack8(config-dial-peer) #port 0/1/0
CME-Rack8(config-dial-peer) #exit
CME-Rack8(config)#dial-peer voice 2 pots
CME-Rack8(config-dial-peer) #destination-pattern 7001
CME-Rack8(config-dial-peer) #port 0/1/1
CME-Rack8(config-dial-peer) #forward-digits all
CME-Rack8(config-dial-peer) #end
CME-Rack8#show dial-peer voice summary
dial-peer hunt 0
AD PRE PASS OUT
TAG TYPE MIN OPER PREFIX DEST-PATTERN FER THRU SESS-TARGET STAT PORT KEEPALIVE
1 pots up up 8001 0 up 0/1/0
2 pots up up 7001 0 up 0/1/1
三、數字語音(T1/E1 ,rj48)
G703 Channel—group 0 unframed
DATA
G704 Channel—group 0 timeslots x—y
Digital trunk
CAS(inbound)ds0—group timeslots x—y type
voice
CCS(isdn) pri—group timeslots x—y
BRI =2B+D
CCS E1 30B+D
PRI
T1 23B+D
1、A/D(模擬到數字變化過程)
(1)Sample the analog signal regularly(有規律的採樣模擬信號)
(2)Quantize the sample(量化採樣點)
(3)Encode the value into a binary expression(將value值編碼成二進制表達式)
(4)Compress the samples to reoluce bandwidth(壓縮採樣點,以減少寬帶(可選))
(5)Decompress the samples ,if compressed(解壓縮採樣點)
(6)Decode the samples into voltage amplitudes,rebuilding the PAM signal(解碼採樣點,成爲電壓幅值,重建脈衝振幅調製信號)
(7)Filter the signal to remove any noise(過濾信號,剔除噪音)
2、相關知識點
T1 E1
B channel(bearer channel)業務通道
D channel(demand channel)信令通道
CAS channel associate signal 隨路信令 隨着語音信道發送信令信息
CCS channel common signal 共路信令 通過專門信道發送信令信息
Frame unframe
BRI(basic rate interface)基本速率接口
BRI(primary rate interface)基羣速率接口
T1 SF 超級幀=12frames
EFS =24fames
T1 CAS:robbed-bit signal 奪位信令
E1 Multiframe 複用幀=16 frame
T1 CAS \E1 CAS on brand signal 帶內信令
T1:1.544MBPS
703 1.544MBPS全部傳輸信令,是unframe標準(沒有同步位),不支持傳統語音。
G704 即支持語音同時支持數據,是frame標準(存在同步位)。1.544mbps-8kbps=1.536mbps
E1:
G703 2.048MBPS
G704 2.048MBPS-64KBPS=1.984MBPS
時分多路複用技術 TDM
服用標準
T1/E1 T1 24路 v=1.544mb/s u率 1比同步
E1 32路 v=2.068mb/s A率 8同步
時隙 8bit 幀25bit
G704: frame G703:unframe
Q921:數據鏈路層 Q931:網絡層
(一)E1的G704傳輸數據實驗
拓撲圖:
命令:
R7:
CME-Rack7(config)#controller e1 0/0/0
CME-Rack7 (config-controller)# channel-group 2 timeslots 1-31
CME-Rack7 (config-controller)#exit
CME-Rack7 (config)#exit
CME-Rack7#config t
CME-Rack7 (config)#int s 0/0/0:2
CME-Rack7 (config-if)#ip add 11.11.11.11 255.255.255.0
CME-Rack7 (config-if)#exit
CME-Rack7 (config)# int loopback 0
CME-Rack7 (config-if)#ip add 202.206.80.1 255.255.255.0
CME-Rack7 (config-if)#exit
CME-Rack7#config t
CME-Rack7 (config)#router ospf 1
CME-Rack7 (config-router)#router-id 1
CME-Rack7 (config-router)#router-id 1.1.1.1
CME-Rack7 (config-router)#network 11.11.11.0 0.0.0.255 area 0
CME-Rack7 (config-router)#network 202.206.80.0 0.0.0.255 area 0
CME-Rack7 (config-router)#exit
CME-Rack7#ping 202.206.81.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.206.81.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
R8:
CME-Rack8#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#controller e1 0/0/0
CME-Rack8(config-controller)#channel-group 2 timeslots 1-31
CME-Rack8(config)#end
CME-Rack8#show ip int bri
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 unassigned YES NVRAM up up
GigabitEthernet0/0.10 10.10.10.8 YES NVRAM up up
GigabitEthernet0/0.81 192.168.81.254 YES NVRAM up up
GigabitEthernet0/0.82 192.168.82.254 YES NVRAM up up
GigabitEthernet0/1 unassigned YES NVRAM administratively down down
Serial0/0/0:2 unassigned YES unset down down
CME-Rack8#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#int s0/0/0:2
CME-Rack8(config-if)#ip add 11.11.11.12 255.255.255.0
CME-Rack8(config-if)#exit
CME-Rack8(config)#int loopback 0
CME-Rack8(config-if)#ip add 202.206.81.1 255.255.255.0
CME-Rack8(config-if)#exit
CME-Rack8(config)#router ospf 1
CME-Rack8(config-router)#router-id 2.2.2.2
CME-Rack8(config-router)#network 11.11.11.0 0.0.0.255 area 0
CME-Rack8(config-router)#network 202.206.81.0 0.0.0.255 area 0
CME-Rack8(config-router)#end
CME-Rack8#ping 202.206.80.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.206.80.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
(二)T1的G704傳輸數據實驗
拓撲圖:
R7:
CME-Rack7#config t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config)#card type t1 0 0
CME-Rack7(config)#controller t1 0/0/0
CME-Rack7(config-controller)#channel-group 0 timeslots 1-24
CME-Rack7(config-controller)#exit
CME-Rack7(config)#end
CME-Rack7#config t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config-if)#int s0/0/0:0
CME-Rack7(config-if)#ip add 1.1.1.1 255.255.255.0
CME-Rack7(config-if)#exit
CME-Rack7(config)#int loo 0
CME-Rack7(config-if)#ip add 202.206.80.8 255.255.255.0
CME-Rack7(config-if)#exit
CME-Rack7(config)#end
CME-Rack7#show ip int bri
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 unassigned YES NVRAM up up
GigabitEthernet0/0.10 10.10.10.7 YES NVRAM up up
GigabitEthernet0/0.71 192.168.71.254 YES NVRAM up up
GigabitEthernet0/0.72 192.168.72.254 YES NVRAM up up
GigabitEthernet0/1 unassigned YES NVRAM administratively down down
Serial0/0/0:0 1.1.1.1 YES manual up down
Loopback0 202.206.80.8 YES manual up up
CME-Rack7#config t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config)#router ospf 1
CME-Rack7(config-router)#network 1.1.1.1 0.0.0.255 area 0
CME-Rack7(config-router)#network 202.206.80.0 0.0.0.255 area 0
CME-Rack7(config-router)#exit
CME-Rack7(config)#end
CME-Rack7#ping 202.206.81.1
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.206.81.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
R8:
CME-Rack8#con t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#card type t1 0 0
CME-Rack8(config)#controller t1 0/0/0
CME-Rack8(config-controller)#channel-group 0 timeslots 1-24
CME-Rack8(config-controller)#end
CME-Rack8#show ip int bri
Interface IP-Address OK? Method Status Protocol
Embedded-Service-Engine0/0 unassigned YES NVRAM administratively down down
GigabitEthernet0/0 unassigned YES NVRAM up up
GigabitEthernet0/0.10 10.10.10.8 YES NVRAM up up
GigabitEthernet0/0.81 192.168.81.254 YES NVRAM up up
GigabitEthernet0/0.82 192.168.82.254 YES NVRAM up up
GigabitEthernet0/1 unassigned YES NVRAM administratively down down
Serial0/0/0:0 unassigned YES unset up up
CME-Rack8#con t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#int s0/0/0:0
CME-Rack8(config-if)#ip add 1.1.1.2 255.255.255.0
CME-Rack8(config-if)#exit
CME-Rack8(config)#int loopback 0
CME-Rack8(config-if)#ip add 202.206.81.1 255.255.255.0
CME-Rack8(config-if)#exit
CME-Rack8(config)#router ospf 1
CME-Rack8(config-router)#network 1.1.1.0 0.0.0.255 area 0
CME-Rack8(config-router)#network 202.206.81.0 0.0.0.255 area 0
CME-Rack8(config-router)#end
CME-Rack8#ping 202.206.80.8
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 202.206.80.8, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
CME-Rack8#
(三)E1的CAS實驗
拓撲圖:
命令:
R7:
CME-Rack7#con t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config)#card type e1 0 0
CME-Rack7(config)#network-clock-participate wic 0
CME-Rack7(config)#controller e1 0/0/0
CME-Rack7(config-controller)# ds0-group 0 timeslots timeslots 1-20 type fxs-ground-start
CME-Rack7(config-controller)#end
CME-Rack7#show voice port su
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
=============== == ============ ===== ==== ======== ======== ==
0/0/0:0 01 fxs-gs up down on-hook idle y
0/0/0:0 02 fxs-gs up down on-hook idle y
0/0/0:0 03 fxs-gs up down on-hook idle y
0/0/0:0 04 fxs-gs up down on-hook idle y
0/0/0:0 05 fxs-gs up down on-hook idle y
0/0/0:0 06 fxs-gs up down on-hook idle y
0/0/0:0 07 fxs-gs up down on-hook idle y
0/0/0:0 08 fxs-gs up down on-hook idle y
0/0/0:0 09 fxs-gs up down on-hook idle y
0/0/0:0 10 fxs-gs up down on-hook idle y
0/0/0:0 11 fxs-gs up down on-hook idle y
0/0/0:0 12 fxs-gs up down on-hook idle y
0/0/0:0 13 fxs-gs up down on-hook idle y
0/0/0:0 14 fxs-gs up down on-hook idle y
0/0/0:0 15 fxs-gs up down on-hook idle y
0/0/0:0 17 fxs-gs up down on-hook idle y
0/0/0:0 18 fxs-gs up down on-hook idle y
0/0/0:0 19 fxs-gs up down on-hook idle y
0/0/0:0 20 fxs-gs up down on-hook idle y
0/1/0 -- fxs-ls up dorm on-hook idle y
0/1/1 -- fxs-ls up dorm on-hook idle y
0/2/0 -- fxo-ls up dorm idle on-hook y
0/2/1 -- fxo-ls up dorm idle on-hook y
PWR FAILOVER PORT PSTN FAILOVER PORT
================= ==================
CME-Rack7#con t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config)#dial-peer voice 1 pots
CME-Rack7(config-dial-peer)#destination-pattern 7001
CME-Rack7(config-dial-peer)#port 0/1/0
CME-Rack7(config-dial-peer)#exit
CME-Rack7(config)#dial-peer voice 2 pots
CME-Rack7(config-dial-peer)#destination-pattern ....
CME-Rack7(config-dial-peer)#port 0/0/0:0
CME-Rack7(config)#end
R8:
CME-Rack8#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#card type e1 0 0
CME-Rack8(config)#network-clock-participate wic 0
CME-Rack8(config)#controller e1 0/0/0
CME-Rack8(config-controller)#ds0-group 0 timeslots 1-20 type fxo-ground-start
CME-Rack8(config-controller)#end
CME-Rack8#show voice port summary
IN OUT
PORT CH SIG-TYPE ADMIN OPER STATUS STATUS EC
=============== == ============ ===== ==== ======== ======== ==
0/0/0:0 01 fxo-gs up dorm idle on-hook y
0/0/0:0 02 fxo-gs up dorm idle on-hook y
0/0/0:0 03 fxo-gs up dorm idle on-hook y
0/0/0:0 04 fxo-gs up dorm idle on-hook y
0/0/0:0 05 fxo-gs up dorm idle on-hook y
0/0/0:0 06 fxo-gs up dorm idle on-hook y
0/0/0:0 07 fxo-gs up dorm idle on-hook y
0/0/0:0 08 fxo-gs up dorm idle on-hook y
0/0/0:0 09 fxo-gs up dorm idle on-hook y
0/0/0:0 10 fxo-gs up dorm idle on-hook y
0/0/0:0 11 fxo-gs up dorm idle on-hook y
0/0/0:0 12 fxo-gs up dorm idle on-hook y
0/0/0:0 13 fxo-gs up dorm idle on-hook y
0/0/0:0 14 fxo-gs up dorm idle on-hook y
0/0/0:0 15 fxo-gs up dorm idle on-hook y
0/0/0:0 17 fxo-gs up dorm idle on-hook y
0/0/0:0 18 fxo-gs up dorm idle on-hook y
0/0/0:0 19 fxo-gs up dorm idle on-hook y
0/0/0:0 20 fxo-gs up dorm idle on-hook y
0/1/0 -- fxs-ls up dorm on-hook idle y
0/1/1 -- fxs-ls up dorm on-hook idle y
PWR FAILOVER PORT PSTN FAILOVER PORT
================= ==================
CME-Rack8#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#dial-peer voice 1 pots
CME-Rack8(config-dial-peer)#destination-pattern 8001
CME-Rack8(config-dial-peer)#port 0/1/0
CME-Rack8(config-dial-peer)#exit
CME-Rack8(config)#dial-peer voice 2 pots
CME-Rack8(config-dial-peer)#destination-pattern ....
CME-Rack8(config-dial-peer)#port 0/0/0:0
CME-Rack8(config-dial-peer)#exit
CME-Rack8(config)#voice-port 0/0/0:0
CME-Rack8(config-voiceport)#connection plar opx 8001
CME-Rack8(config-voiceport)#end
(四)E1的CCS實驗
拓撲圖:
R7:
CME-Rack7#config t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack7(config)#card type e1 0 0
CME-Rack7(config)#network-clock-participate wic 0
CME-Rack7(config)#isdn switch-type primary-net5
CME-Rack7(config)#controller e1 0/0/0
CME-Rack7(config-controller)#pri-group timeslots 7-12
CME-Rack7(config-controller)#clock source internal
CME-Rack7(config-controller)#int s 0/0/0:15
CME-Rack7(config-if)#isdn protocol-emulate network
CME-Rack7(config-if)#exit
CME-Rack7(config)#dial-peer voice 1 pots
CME-Rack7(config-dial-peer)#destination-pattern .T
CME-Rack7(config-dial-peer)#port 0/0/0:15
CME-Rack7(config-dial-peer)#exit
CME-Rack7(config)#dial-peer voice 2 pots
CME-Rack7(config-dial-peer)#destination-pattern 7001
CME-Rack7(config-dial-peer)#port 0/1/0
CME-Rack7(config-dial-peer)#exit
CME-Rack7(config)#end
CME-Rack7#show network-clocks
Network Clock Configuration
---------------------------
Priority Clock Source Clock State Clock Type
10 Backplane GOOD PLL
Current Primary Clock Source
---------------------------
Priority Clock Source Clock State Clock Type
10 Backplane GOOD PLL
CME-Rack7#show isdn status
Global ISDN Switchtype = primary-net5
ISDN Serial0/0/0:15 interface
******* Network side configuration *******
dsl 0, interface ISDN Switchtype = primary-net5
Layer 1 Status:
ACTIVE
Layer 2 Status:
TEI = 0, Ces = 1, SAPI = 0, State = MULTIPLE_FRAME_ESTABLISHED
Layer 3 Status:
0 Active Layer 3 Call(s)
Active dsl 0 CCBs = 0
The Free Channel Mask: 0x80000FC0
Number of L2 Discards = 0, L2 Session ID = 17
Total Allocated ISDN CCBs = 0
R8:
CME-Rack8#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#card type e1 0 0
CME-Rack8(config)#network-clock-participate wic 0
CME-Rack8(config)#network-clock-select 1 e1 0/0/0
CME-Rack8(config)#exit
CME-Rack8#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#isdn switch-type primary-net5
CME-Rack8(config)#controller e1 0/0/0
CME-Rack8(config-controller)#pri-group timeslots 7-12
CME-Rack8(config-controller)#exit
CME-Rack8(config)#interface serial 0/0/0:15
CME-Rack8(config-if)#isdn protocol-emulate user
CME-Rack8(config-if)#end
CME-Rack8#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CME-Rack8(config)#dial-peer voice 1 pots
CME-Rack8(config-dial-peer)#destination-pattern 8001
CME-Rack8(config-dial-peer)#port 0/1/0
CME-Rack8(config-dial-peer)#exit
CME-Rack8(config)#dial-peer voice 2 pots
CME-Rack8(config-dial-peer)#destination-pattern .T
CME-Rack8(config-dial-peer)#port 0/0/0:15
CME-Rack8(config-dial-peer)#end
四、 VoIP語音
Voip到底是什麼?關鍵技術是什麼?
關鍵在於中間工作的四個層次的工作原理。具體說,信令與媒體工作在兩個層次,在保證連接完成且通信的基礎上,傳輸語言流。在建立通道時,選擇恰當的信令(SIP、SCCP等)以保證媒體在通道上正常傳輸,媒體在傳輸前需要在表示層完成編解碼處理。
相關命令:
CME-Rack7(config)#dial-peer voice 1 voip
CME-Rack7(config-dial-peer)#destination-pattern 8001
CME-Rack7(config-dial-peer)#session target ipv4:10.10.10.8
CME-Rack8(config)#dial-peer voice 1 voip
CME-Rack8(config-dial-peer)#destination-pattern 7001
CME-Rack8(config-dial-peer)#session target ipv4:10.10.10.7
轉載於:https://www.cnblogs.com/ayxj/p/9179295.html