01-29-2020 07:34 AM
Hi,
I have a CUCM V11 connected to a PBX System using a VG.
The calls from and to the two systems works fine, the problem is the following:
-when calling from the IP phones registered to the CUCM to the PBX system the call works but I didn't get the ring back tone neither the caller name on my IP Phone.
-when calling from PBX System to the CUCM I get no audio (I can't hear anything) only one way.
I am a beginner and I know that the problem is probably in the voice gateway!
Any help would be much appreciated.
Thank you all.
Regards,
02-18-2020 04:23 AM
Hello,
Can you please confirm below flow?
IP Phone --> (SIP or SCCP ? ) --> CUCM --> (MGCP/SIP/H323 ?) --> Voice Gateway
Model of VG?
IOS code of VG?
Thanks.
06-30-2020 04:19 AM
@silvervoip wrote:Hello,
Can you please confirm below flow?
IP Phone --> (SIP or SCCP ? ) --> CUCM --> (MGCP/SIP/H323 ?) --> Voice Gateway
Model of VG?
IOS code of VG?
Thanks.
Hi,
Sorry for the delay.
IP Phones: SIP
H.323 Gateway:
Cisco 2811
Cisco IOS Software, 2800 Software (C2800NM-SPSERVICESK9-M), Version 12.4(15)T9,
Configuration of the Cisco Gateway:
sh run Building configuration... Current configuration : 4304 bytes ! ! hostname CCO-VG-01 ! boot-start-marker boot-end-marker ! card type e1 0 0 logging buffered 4096 ! aaa new-model ! ! aaa authentication login defu local ! ! aaa session-id common network-clock-participate wic 0 dot11 syslog ! ! ip cef no ip dhcp use vrf connected ! ip dhcp pool srst network 192.168.3.0 255.255.255.0 option 150 ip 192.168.27.1 default-router 192.168.27.50 ! ! multilink bundle-name authenticated ! isdn switch-type primary-qsig ! voice-card 0 no dspfarm ! ! ! ! ! ! voice class h323 1 h225 timeout tcp establish 3 ! ! ! ! ! ! ! ! ! ! ! ! crypto pki trustpoint TP-self-signed-1473155935 enrollment selfsigned subject-name cn=IOS-Self-Signed-Certificate-1473155935 revocation-check none rsakeypair TP-self-signed-1473155935 ! ! ! ! archive log config hidekeys ! ! controller E1 0/0/0 pri-group timeslots 1-31 ! controller E1 0/0/1 framing NO-CRC4 ! ! ! ! ! interface FastEthernet0/0 description CONNECTED TO CORE SWITCH ip address 192.168.27.50 255.255.255.0 duplex auto speed auto h323-gateway voip interface h323-gateway voip bind srcaddr 192.168.27.50 ! interface FastEthernet0/1 no ip address shutdown duplex auto speed auto ! interface Serial0/0/0:15 no ip address encapsulation hdlc logging event nfas-status logging event subif-link-status isdn switch-type primary-qsig isdn timer T310 60000 isdn overlap-receiving isdn protocol-emulate network isdn incoming-voice voice isdn send-alerting no cdp enable ! ip forward-protocol nd ip route 0.0.0.0 0.0.0.0 192.168.27.251 ! ! ip http server ip http access-class 23 ip http authentication local ip http secure-server ip http timeout-policy idle 60 life 86400 requests 10000 ! logging trap debugging logging 192.168.29.210 access-list 23 permit 10.10.10.0 0.0.0.7 ! ! ! control-plane ! ! ! voice-port 0/0/0:15 ! ! ! ! ! dial-peer voice 100 voip tone ringback alert-no-PI preference 2 destination-pattern 4...$ voice-class h323 1 session target ipv4:192.168.27.1 dtmf-relay h245-alphanumeric ip qos dscp cs5 media ! dial-peer voice 101 voip tone ringback alert-no-PI preference 3 destination-pattern 4...$ session target ipv4:192.168.27.2 dtmf-relay h245-alphanumeric ip qos dscp cs5 media ! dial-peer voice 1 pots destination-pattern .T direct-inward-dial port 0/0/0:15 forward-digits all ! dial-peer voice 4123 voip tone ringback alert-no-PI preference 1 destination-pattern 4123$ session target ipv4:192.168.27.1 dtmf-relay h245-alphanumeric no vad ! dial-peer voice 120 voip shutdown destination-pattern 45..$ voice-class h323 1 session target ipv4:192.168.123.187 dtmf-relay h245-alphanumeric no vad ! dial-peer voice 200 voip preference 4 destination-pattern [5-7,9]...$ voice-class h323 1 session target ipv4:172.16.255.2 dtmf-relay h245-alphanumeric ip qos dscp cs5 media ! dial-peer voice 201 voip preference 5 destination-pattern [5-7,9]...$ session target ipv4:172.16.255.1 dtmf-relay h245-alphanumeric ip qos dscp cs5 media ! dial-peer voice 211 voip destination-pattern 4501$ session target ipv4:172.16.255.2 dtmf-relay h245-alphanumeric ip qos dscp cs5 media ! dial-peer voice 212 voip preference 1 destination-pattern 4501$ session target ipv4:172.16.255.1 dtmf-relay h245-alphanumeric ip qos dscp cs5 media ! ! ! call-manager-fallback max-conferences 4 gain -6 transfer-system full-consult ip source-address 192.168.27.50 port 2000 max-ephones 30 max-dn 30 time-zone 25 time-format 24 date-format dd-mm-yy ! privilege exec level 2 show privilege exec level 2 debug ! line con 0 exec-timeout 0 0 logging synchronous line aux 0 line vty 0 4 privilege level 15 login authentication defu transport input telnet ssh line vty 5 15 privilege level 15 login authentication defu transport input telnet ssh line vty 16 515 ! scheduler allocate 20000 1000 ! end
06-30-2020 10:44 PM - edited 06-30-2020 10:48 PM
What is the model of your pbx? Have you checked the documentation for integrating it to cucm? There may be specific configuration required which the documentation may point out.
One way audio is usually related to IP connectivity. We need to see where your media is terminated and then check if your phones have IP connectivity to the IP address..
You can do tests call and attach the following debug. Note they need to be enabled together
debug h225 asn1
debug h245 asn1
debug VoIP ccapi inout
07-06-2020 05:54 AM
-when calling from the IP phones registered to the CUCM to the PBX system the call works but I didn't get the ring back tone neither the caller name on my IP Phone. >> you need to check from the PBX.
-when calling from PBX System to the CUCM I get no audio (I can't hear anything) only one way.>>> add route on PBX to IP Phone network
07-06-2020 08:31 AM
For ringback you may need the following in your outbound pots dial peer.
progress_ind alert enable 8
Discover and save your favorite ideas. Come back to expert answers, step-by-step guides, recent topics, and more.
New here? Get started with these tips. How to use Community New member guide