I had an interesting case last week where calls over ICT trunk would connect but then either party will not hear each other for 8-10 seconds. The issue was first reported from US users trying to reach UK users over an Inter-cluster trunk (Non-GK). Both clusters had two call managers version 8.0.3. The whole issueContinue reading “Scenario#31 – Calls over ICT have delayed Voice”
Category Archives: Real World Scenarios
Scenario#30 – Local Agent not Responding
Came across an interesting issue where Customer was not able to access Disaster Recovery drop downs. I tried it myself and I was getting as follows: So it was Local agent not responding – I tried restarting the Cisco DRF Master and Local but that didn’t help. This is what I did to resolve theContinue reading “Scenario#30 – Local Agent not Responding”
Scenario#29 – Certificate expired – %CCM_UNKNOWN-CERT-0-CertExpiryEmergency
For one of our customer we noticed several RTMT SyslogSeverityMatchFound alerts generated every few minutes for Certificates expiration. The alerts I was getting were as follows: Feb 15 16:00:00, CCM-PUB, Emergency, Cisco Certificate Monitor, : 8947: Feb 15 16:00:00.57 UTC : %CCM_UNKNOWN-CERT-0-CertExpiryEmergency: Certificate Expiry EMERGENCY_ALARM Message:Certificate expiration Notification. Certificate name:tomcat Unit:tomcat Type:own-cert Expiration:Wed Mar 3Continue reading “Scenario#29 – Certificate expired – %CCM_UNKNOWN-CERT-0-CertExpiryEmergency”
Scenario#28 – CUCM applying DST changes 1 week before needed (2010)
Today was a hectic day. I walked into my office and immediately started getting calls that phones have gone 1 hour behind. I was a bit surprised as Daylight Saving will be finishing here in UK on 31st October so how come phones gone behind a week earlier. I thought may be customer has gotContinue reading “Scenario#28 – CUCM applying DST changes 1 week before needed (2010)”
Scenario#27 – RightFax Server not working – MGCP
I had an interesting scenario where customer logged a case with us regarding their RightFax server not working. Those of you who don’t know what is a RightFax server can read about it here. When you dial the fax number from outside, it reaches the gateway and you hear one ringback and then a fastContinue reading “Scenario#27 – RightFax Server not working – MGCP”
Scenario#26 – Abbreviated Dial not working Cisco 7912
I was looking into this customer issue where they upgraded from Call manager 4.x to 7.x and almost all users on 7912 phone lost their speed dials. I checked the phones and CCMUSER page and found that the dials where there but they are not able to access it. Created a new Softkey template includingContinue reading “Scenario#26 – Abbreviated Dial not working Cisco 7912”
Scenario#25 – MoH file download from Call manager
Came across an MoH issue for a customer where the file was missing from Subscriber. As you may be aware that an MoH file should always be uploaded across the cluster on each server to work properly. If you only upload the MoH file on Publisher then it won’t be replicated on other servers. YouContinue reading “Scenario#25 – MoH file download from Call manager”
Scenario#24 – SIP Calls drop after Silence
Came across a complex situation where customer was using this SIP trunk as an alternative to ISDN-30 (if all channels are used or if ISDN goes down). The ISDN-30 link was working fine but they had issues on SIP trunk (how many times I have heard this?) …. their outbound calls over SIP were usingContinue reading “Scenario#24 – SIP Calls drop after Silence”
Scenario#23 – Fax Issues for ATA
Fax machines connected to ATA were not working. The first thing I checked on the gateway…is fax-relay was being used or fax protocol cisco was configured? Fax-relay is NOT supported by ATA. This is what I found at the Voice gateway: voice service voip allow-connections h323 to sip allow-connections sip to h323 allow-connections sip toContinue reading “Scenario#23 – Fax Issues for ATA”
Scenario#22 – ISDN user busy 0x8091
This was an interesting scenario where incoming calls were getting ‘user busy’ message at the gateway and an engage tone was heard at calling party side. *Aug 18 08:36:53.581: ISDN Se0/0/0:15 Q931: RX <-CALL_PROC pd = 8 callref = 0x8D7E Channel ID i = 0xA9839E Exclusive, Channel 30 *Aug 18 08:36:54.997: ISDN Se0/0/0:15 Q931: RXContinue reading “Scenario#22 – ISDN user busy 0x8091”
voiceonbits.com 