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 fastContinueContinue reading “Scenario#27 – RightFax Server not working – MGCP”
Category Archives: Unified Communications
iPhone 4 Battery Drain – Some Tips
OK, this is different of what I use to write but I think it would be helpful for all iphone 4 users. I had my iphone 4 few days back and I was quite impressed by this new smartphone until I realized the phone is draining my battery like a Ferrari sucks up fuel. AllContinueContinue reading “iPhone 4 Battery Drain – Some Tips”
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 includingContinueContinue 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. YouContinueContinue 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 usingContinueContinue reading “Scenario#24 – SIP Calls drop after Silence”
Cisco 7931 Phone and Headset
The Cisco Unified IP Phone 7931 includes 24 buttons that can be assigned to lines and call features. A 3-color LED provides call status information for each line. The line buttons are numbered 24-1 from top to bottom. The numbers do not appear on the phone. There are two ways how the top four buttonsContinueContinue reading “Cisco 7931 Phone and Headset”
DSP, PVDM & Media Resources
The Cisco High-Density Packet Voice Digital Signal Processor (DSP) Module (PVDM2) enables Cisco Integrated Services Routers to provide high-density voice connectivity, conferencing, and transcoding capabilities in Cisco IP Communications solutions. PVDM stands for packet voice DSP module; it is the Cisco product name for the module that provides digital signal processing resources to a system.ContinueContinue reading “DSP, PVDM & Media Resources”
Restricting Access to Corporate & Personal Directory
How you can restrict access to corporate directory? If you remember, corporate directory is accessible globally from a cluster and restricting its access needs some configuration changes. In pre-CUCM 7.x you cannot accommodate it at individual level but in CUCM7.x you have flexibility. You can run a sql command to access corporate directory information fromContinueContinue reading “Restricting Access to Corporate & Personal Directory”
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 toContinueContinue reading “Scenario#23 – Fax Issues for ATA”
IOS 15.1 Toll Fraud feature
A new feature has been introduced in Cisco IOS® Software Release 15.1(2)T to guard against the incidence of toll-fraud on Voice GateWays (VGWs) installed with Cisco IOS. Starting with IOS 15.1(2)T and newer releases of IOS based on this version, the toll-fraud prevention settings are the default behavior of Cisco IOS-based VGWs. Behavior Before 15.1(2)TContinueContinue reading “IOS 15.1 Toll Fraud feature”
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