IP Telephony and Phones

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  Our campus has purchased several Cisco VT Camera II webcams, but I'm unable to download the drivers for them without a contract. The devices themselves did not come with any installation media, and they're not automatically installing on Windows 8....

Hi,We have a Cisco CUBE and have configured gigabit sub-interfaces with different IPs to terminate each of the SIP trunks from clients and service providers. As we are getting multiple SIP trunk requirements from clients/service providers,have below ...

k.ms by Level 1
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Hello,    I have a very weird problem I am not able to receive calls from local exptensions but I am able to receive calls from external numbers. My phone is 7911. I trid to delete and recreate the phone again but still it the same issue. I have 400 ...

I have been having quite a bit of trouble wrapping my head around this issue. I register to ITSP and that is fine. Outgoing works ok. Incoming does not seem to work:SIP/2.0 403 Incorrect AuthenticationSIP/2.0 403 Forbidden Reason: Q.850;cause=57sip-u...

Resolved! call loop

Hello Guys,I'm facing a strange issue on a SIP gateway. We received traces from our provider about calls loops. It appears, if we call the main number, this call is directly send back by the gateway to the sip provider and the loops begin. Call flow ...

Hi,Hope someone can shed some light and help us with an issue.We're upgrading CUCM cluster from 8.0.2.40000-1 to 9.1.2.10000-28Systems were on MCS hardware - migrated 8.0(2) successfully to VM infrastructure.Appeared to successfully upgrade Publisher...