Hi All, I have a problem with echo in a CME installation. The users are at times experiencing echo while on calls. They are hearing their own voice delayed slightly in their own hand set. The say that it is often with a call that has been transferred to them.
The environment is very simple. There are only 12 phones and they are not sharing the network, at this stage, with data. The connectivity to the PSTN is via BRI.
The router is a 2811 with a 16 port POE switch card.
Below are the relevant parts of the config. Any help would be greatly appreciated.
Regards, Scott
=========================== Current configuration : 20228 bytes ! version 12.4 service timestamps debug datetime msec service timestamps log datetime msec service password-encryption ! hostname RRRRRR ! boot-start-marker boot-end-marker ! logging buffered 51200 warnings enable secret 5 RRRRRRRRR ! aaa new-model ! ! aaa authentication login default local aaa authorization exec default local ! aaa session-id common ! resource policy ! clock timezone NZST 12 clock summer-time NZDT recurring 1 Sun Oct 2:00 last Sun Mar 2:00 network-clock-participate wic 0 network-clock-select 1 BRI0/0/0 network-clock-select 2 BRI0/0/1 ! ! ip cef no ip dhcp use vrf connected ip dhcp excluded-address 10.0.202.200 10.0.202.254 ! ip dhcp pool voice network 10.0.202.0 255.255.255.0 default-router 10.0.202.254 option 150 ip 10.0.202.254 ! ! no ip domain lookup ip domain name RRRRRRR ! isdn switch-type basic-net3 ! ! trunk group PSTN_Outgoing hunt-scheme sequential ! voice-card 0 dspfarm ! ! ! voice service pots ! voice service voip allow-connections h323 to h323 allow-connections h323 to sip allow-connections sip to h323 supplementary-service h450.12 h323 ! ! ! voice class h323 1 call preserve ! !! voice translation-rule 1 rule 2 /^2/ /102/ rule 3 /^3/ /103/ rule 4 /^4/ /104/ rule 5 /^6/ /106/ rule 7 /^7/ /107/ rule 9 /^9/ /109/ ! ! voice translation-profile insert10 translate calling 1 ! voice translation-profile insertCLID translate calling 2 ! ! ! crypto pki trustpoint TP-self-signed-2152746620 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-2152746620 revocation-check none rsakeypair TP-self-signed-2152746620 ! ! crypto pki certificate chain TP-self-signed-2152746620 certificate self-signed 01 RRRRRRRRRRRR quit username RRRRRRRRRR password 7 RRRRRRRRR ! ! ! ! ! interface FastEthernet0/0 description Not in use no ip address shutdown duplex auto speed auto ! interface FastEthernet0/1 description Not in use no ip address shutdown duplex auto speed auto ! interface BRI0/0/0 no ip address isdn switch-type basic-net3 isdn timer t321 0 isdn point-to-point-setup isdn incoming-voice voice isdn map address .* plan national type unknown isdn map address national plan unknown type unknown isdn send-alerting isdn sending-complete trunk-group PSTN_Outgoing 1 ! interface BRI0/0/1 no ip address isdn switch-type basic-net3 isdn timer t321 0 isdn point-to-point-setup isdn incoming-voice voice isdn map address .* plan national type unknown isdn map address national plan unknown type unknown isdn send-alerting isdn sending-complete trunk-group PSTN_Outgoing 1 ! interface FastEthernet1/0 switchport mode trunk switchport voice vlan 10 spanning-tree portfast ! interface FastEthernet1/1 switchport mode trunk switchport voice vlan 10 spanning-tree portfast ! RRRRRRRRRRRR
! interface Vlan1 ip address 10.0.102.254 255.255.255.0 ! interface Vlan10 ip address 10.0.202.254 255.255.255.0 ! ! ! ip http server ip http authentication local ip http secure-server ip http timeout-policy idle 600 life 86400 requests 10000 ip http path flash: ! ! ! tftp-server flash:P0030702T023.bin tftp-server flash:P0030702T023.sbn tftp-server flash:P0030702T023.sb2 tftp-server flash:DistinctiveRingList.xml tftp-server flash:Ring1.raw tftp-server flash:Ring2.raw tftp-server flash:Ring3.raw tftp-server flash:Ring4.raw tftp-server flash:Ring5.raw tftp-server flash:RingList.xml tftp-server flash:P0030702T023.loads tftp-server flash:ATA030100SCCP040211A.zup ! control-plane ! ! ! voice-port 0/0/0 translation-profile incoming insert10 translation-profile outgoing insertCLID compand-type a-law cptone NZ bearer-cap Speech ! voice-port 0/0/1 translation-profile incoming insert10 translation-profile outgoing insertCLID compand-type a-law cptone NZ bearer-cap Speech ! ! ! ! dial-peer cor custom name m-internal name m-local name m-national name m-international ! ! dial-peer cor list internal member m-internal ! dial-peer cor list local member m-internal member m-local ! dial-peer cor list national member m-internal member m-local member m-national ! dial-peer cor list unrestricted member m-internal member m-local member m-national member m-international ! dial-peer cor list dp-internal member m-internal ! dial-peer cor list dp-local member m-local ! dial-peer cor list dp-national member m-national ! dial-peer cor list dp-unrestricted member m-international ! ! dial-peer voice 1 pots trunkgroup PSTN_Outgoing corlist outgoing dp-local tone ringback alert-no-PI description Local Calling destination-pattern 1[23456789]...... progress_ind setup enable 3 progress_ind alert enable 8 direct-inward-dial forward-digits 7 ! dial-peer voice 2 pots trunkgroup PSTN_Outgoing corlist outgoing dp-national tone ringback alert-no-PI description National Calling destination-pattern 10[34679]....... progress_ind setup enable 3 progress_ind alert enable 8 direct-inward-dial forward-digits 9 ! dial-peer voice 3 pots trunkgroup PSTN_Outgoing corlist outgoing dp-unrestricted tone ringback alert-no-PI description International Calling destination-pattern 100.T progress_ind setup enable 3 progress_ind alert enable 8 direct-inward-dial prefix 00 ! RRRRRRRRRR
! dial-peer voice 100 pots description Inbound Calls BRI0/0/0 incoming called-number . direct-inward-dial port 0/0/0 ! dial-peer voice 101 pots description Inbound Calls BRI0/0/1 incoming called-number . direct-inward-dial port 0/0/1 ! ! num-exp 111 1111 num-exp 7549024 725 num-exp 7549025 725 num-exp 7546719 725 ! ! telephony-service load 7960-7940 P0030702T023 load ATA ATA030100SCCP040211A max-ephones 42 max-dn 144 ip source-address 10.0.202.254 port 2000 auto assign 50 to 55 service dnis overlay service dnis dir-lookup timeouts interdigit 4 system message RRRRRRRR time-zone 53 date-format dd-mm-yy max-conferences 8 gain -6 call-forward pattern .T moh SampleAudioSource.alaw.wav web admin system name RRRRRRR password RRRRRRRRR dn-webedit time-webedit transfer-system full-consult dss transfer-pattern .T blind secondary-dialtone 1
create cnf-files version-stamp Jan 01 2002 00:00:00 ! ! ephone-dn 1 dual-line number 701 pickup-group 1 label RRRR 701 description RRR name RRRR corlist incoming unrestricted ! ! ephone-dn 2 dual-line number 702 pickup-group 1 label Supervisor 702 description Supervisor name Supervisor corlist incoming unrestricted ! ! RRRRRRRRRRR ! ! ephone-dn 30 number 730 park-slot timeout 20 limit 100 description Call park 730 name Call park 730 ! ! ephone-dn 34 dual-line number 734 pickup-group 1 description Overflow1 name Overflow1 ! ! ephone-dn 35 dual-line number 735 pickup-group 1 description Overflow2 name Overflow2 ! ! ephone-dn 36 dual-line number 736 pickup-group 1 description Overflow3 name Overflow3 ! ! ephone 1 username "RRRR" password RRRR mac-address 0017.59E5.5BC7 speed-dial 1 # type 7940 button 1o1,26,27,28,29,34,35,36 2m3 ! ! ! ephone 2 username "RRRR" password RRRR mac-address 0017.5A52.E143 speed-dial 1 # type 7940 button 1:2 ! ! ! ! ephone-hunt 1 peer pilot 733 list 734, 735, 736 description Overflow Calls ! ! ephone-hunt 2 peer pilot 725 list 726, 727, 728, 729 final 733 max-timeout 13 timeout 13, 13, 13, 13 description Incomming Calls ! ! banner exec ^CCC
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- DO NOT LOGON UNLESS AUTHORISED! *
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