voip 单向通通话的现象（有网络图）...

－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－－ 故障表现为 1给2打电话 震铃正常 通话正常 2给1 打电话 震铃正常 2可听到1说话 但是1听不到2说话

劳驾各位给我分析分析好吗？在这里先谢谢各位了 我的电话是 13899322258 13999201524 msn：lipengc@hotmail.com qq:39282338

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路由器A cisco 3725 语音模块：NM—HDV2 语音接口为：vwic－1mft－e1 ios：123.7T 特性集：voip 路由器B ciso2621xm 语音接口为vic-2fxo vic-2fxs 北电程控交换机接口 LRN 板

路由器A的配置 ! version 12.3 service timestamps debug datetime msec service timestamps log datetime msec no service password-encryption ! hostname TLFDQGAJ ! boot-start-marker boot-end-marker ! enable password tlf3031 ! no network-clock-participate slot 1 no network-clock-participate slot 2 no network-clock-participate wic 0 no network-clock-participate wic 1 no network-clock-participate wic 2 no network-clock-participate aim 0 no network-clock-participate aim 1 no aaa new-model ip subnet-zero ip cef ! ! ! ! no ftp-server write-enable voice-card 1 no dspfarm ! ! ! ! ! controller E1 1/0 framing NO-CRC4 line-termination 75-ohm ds0-group 0 timeslots 1-15 type r2-digital r2-compelled ds0-group 1 timeslots 17-31 type r2-digital r2-compelled cas-custom 0 unused-abcd 0 1 1 1 country china cas-custom 1 unused-abcd 0 1 1 1 country china ! ! ! interface FastEthernet0/0 ip address 10.23.1.254 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 ip address 10.23.31.2 255.255.255.252 duplex auto speed auto ! router rip version 2 network 10.0.0.0 ! ip classless ip route 10.0.0.0 255.0.0.0 10.23.31.1 ip route 10.23.2.0 255.255.254.0 Null0 ip route 10.23.4.0 255.255.252.0 Null0 ip route 10.23.8.0 255.255.255.0 10.23.1.246 ip route 10.23.12.0 255.255.255.0 10.23.1.248 ip route 10.23.13.0 255.255.255.0 Null0 ip route 10.23.14.0 255.255.254.0 Null0 ip route 10.23.15.0 255.255.255.0 10.23.18.254 ip route 10.23.16.0 255.255.255.0 10.23.1.247 ip route 10.23.17.0 255.255.255.0 Null0 ip route 10.23.18.0 255.255.254.0 Null0 ip route 10.23.20.0 255.255.252.0 10.23.1.245 ip route 10.23.28.0 255.255.255.0 10.23.1.244 ip route 10.23.30.0 255.255.255.0 Null0 ip http server ! ! ! ! ! control-plane ! ! ! voice-port 1/0:0 ! voice-port 1/0:1 ! ! ! ! dial-peer cor custom ! ! ! dial-peer voice 1 pots destination-pattern 3... direct-inward-dial port 1/0:0 forward-digits all ! dial-peer voice 2 pots destination-pattern 3... direct-inward-dial port 1/0:1 forward-digits all ! dial-peer voice 3 pots destination-pattern 9....... direct-inward-dial port 1/0:0 forward-digits all ! dial-peer voice 4 pots destination-pattern 9....... direct-inward-dial port 1/0:1 forward-digits all ! dial-peer voice 151 voip description TLFSGAJ destination-pattern 2... session target ipv4:10.23.12.252 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 201 voip description ShanShan destination-pattern 50.. session target ipv4:10.23.8.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 202 voip description ShanShan destination-pattern 51.. session target ipv4:10.23.8.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 203 voip description ShanShan destination-pattern 52.. session target ipv4:10.23.8.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 204 voip description ShanShan destination-pattern 53.. session target ipv4:10.23.8.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 205 voip description ShanShan destination-pattern 54.. session target ipv4:10.23.8.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 251 voip description TuoKeXun destination-pattern 55.. session target ipv4:10.13.20.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 252 voip description TuoKeXun destination-pattern 56.. session target ipv4:10.13.20.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 253 voip description TuoKeXun destination-pattern 57.. session target ipv4:10.13.20.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric ! dial-peer voice 254 voip description TuoKeXun destination-pattern 58.. session target ipv4:10.13.20.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! dial-peer voice 255 voip description TuoKeXun destination-pattern 59.. session target ipv4:10.13.20.253 dtmf-relay cisco-rtp h245-signal h245-alphanumeric fax rate 9600 ! ! line con 0 line aux 0 line vty 0 4 password tlf login ! ! end

路由器B的配置为

User Access Verification

Password: Password: ss_voip>en Password: ss_voip#show run Building configuration...

Current configuration : 1804 bytes ! version 12.1 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname ss_voip ! enable password cisco ! ! ! ! ! memory-size iomem 10 ip subnet-zero ! ! ! voice-port 1/0/0 cptone CN description fxs_link_pbx(zhong.ji) ! voice-port 1/0/1 cptone CN description fxs_link_pbx(zhong.ji) ! voice-port 1 cptone CN description FXO_LINK_PBX<YONG.HU> ! voice-port 1/1/1 cptone CN description FXO-LINK_PBX<YONG.HU> ! ! dial-peer voice 1 pots port 1/0/0 ! dial-peer voice 2 pots port 1/0/1 ! dial-peer voice 51 pots destination-pattern 50.. port 1/1/0 prefix 50 ! dial-peer voice 52 pots destination-pattern 50.. port 1/1/1 prefix 50 ! dial-peer voice 101 voip destination-pattern 3... ip precedence 5 session target ipv4:10.23.1.253 ! dial-peer voice 151 voip destination-pattern 2... ip precedence 5 session target ipv4:10.23.12.252 ! dial-peer voice 251 voip destination-pattern 55.. ip precedence 5 session target ipv4:10.23.20.253 ! dial-peer voice 252 voip destination-pattern 56.. ip precedence 5 session target ipv4:10.23.20.253 ! dial-peer voice 253 voip destination-pattern 57.. ip precedence 5 session target ipv4:10.23.20.253 ! dial-peer voice 254 voip destination-pattern 58.. ip precedence 5 session target ipv4:10.23.20.253 ! dial-peer voice 255 voip destination-pattern 59.. ip precedence 5 session target ipv4:10.23.20.253 ! ! ! interface FastEthernet0/0 ip address 10.23.8.253 255.255.255.0 duplex auto speed auto ! interface FastEthernet0/1 no ip address duplex auto speed auto ! ip classless ip route 0.0.0.0 0.0.0.0 10.23.8.254 ip http server ! ! line con 0 line aux 0 line vty 0 4 password cisco login ! end