About tschafferx

tschafferx · 05-07-2021

Hello community, I have setup the Webex App for Unified CM Calling. Everything seems to work fine, except dialing URIs via the App connected with a deskphone over CTI. The call setup windows opens quickly and disappears again.I can dial URIs via my o...

tschafferx · 04-17-2021

Hello cisco community, in the book CLCOR 350-801 I read the following statement on pages 202 and 203: The phone will then use these VLANs (data and voice switchport configurations) to tag all communication originating from the phone with the voice VL...

tschafferx · 04-10-2021

Hello community, I am currently reading the newest CLOR 350-801 Cisco Press book. There is a section in the SIP-Protocols description which recaps how early offer and delayed offer works. Here is an excerpt from the book about early offer: The OK mes...

tschafferx · 09-03-2020

Hello team, quick question about upgrading the SX10 / SX20 systems. I see in the logs that those systems try to request the following loads:SX10: ce9_13_0-990355df13aSX20: ce9_13_0-990355df13a.pkg The phone gets a 404 (not found) from the TFTP server...

tschafferx · 05-28-2020

Hi community, maybe someone has already experienced this issue. When using conference now you define a number which triggers an IVR prompt where you can setup your meetings. I the ani is associated with an active SNR number the IVR script won't let t...

tschafferx · 09-06-2021

Hi Carlos, you could try the following: To establish a secure connection with Unified CM, Webex validates the certificate that is presented by the server during the connection process. Unlike Jabber, Webex does not prompt users with the option to acc...

tschafferx · 05-10-2021

Hi Ramon, I did some more research. I figured out that the call tries to traverse the expressway towards the following domain "XXXX@meet-k.ciscospark.com" which means it is not trying to reach the URI via the CUCM. Right now it looks to me, that this...

tschafferx · 05-07-2021

Hello Ramon,that works. But lets assume a company synchronizes their users into control hub and uses that directory to search users. That means, that it wouldn't be possible to call any user via their URI in a hybrid deployment.I even setup the follo...

tschafferx · 04-18-2021

Hi Nithin, that's how I remember it. Therefore the description in the book is a bit misleading in my opinion, since the data packets are not tagged. Only the voice packets are tagged based on the voice vlan information received e.g. via CDP.

tschafferx · 04-11-2021

Hi Roger, thank you for your reply. But lets just pick that part: Since the destination endpoint is now aware of the ports specified by the source endpoint for the media communication, these ports are opened, and the destination endpoint can now rece...

Member Since	‎03-01-2016 02:57 AM
Date Last Visited	‎11-17-2021 12:48 AM
Posts	114
Total Helpful Votes Received	15

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UCM-Calling in Webex App doesn't work with CTI phone control and URIs

Cisco phone VLAN tagging on access/voice port

SIP - SDP m-line meaning and port description

Upgrade Firmware of SX-10/20 - Phone Load requested is wrong

Conference Now IVR and Single Number reach doesn't work

Re: Calling in Webex (Unified CM) - Internal registration

Re: UCM-Calling in Webex App doesn't work with CTI phone control and URIs

Re: UCM-Calling in Webex App doesn't work with CTI phone control and URIs

Re: Cisco phone VLAN tagging on access/voice port

Re: SIP - SDP m-line meaning and port description