About Lukas Krejci

Lukas Krejci · 03-08-2022

Hello,I have a client machine with Cisco AnyConnect on Windows 10, that is not able to connect to the Cisco 892 router to establish the IPSec VPN tunnel (authenticated using group name and password and user name and password).The client sees the VPN ...

Lukas Krejci · 09-01-2020

Hello,we had to move our CME from public IP behind NAT, so our ISTP changed configuration for our SIP trunk to register with authentication. Now I have LoginID, AuthID and Password that I have added to the configuration. The problem is that I can sti...

Lukas Krejci · 08-01-2018

Hi all, I want to automatically record calls on one Cisco SPA525G IP phone - there is an option to record calls on USB flash disk, but the user has to push buttons to start the recording. Is there a way to start the call recording to USB flash disk a...

Lukas Krejci · 11-13-2015

Hi, we have several cisco IP phones connected to the call manager (2911/K9), which is then trunked to the provider. Some of the IP phone (SPA303) are connected as SIP phones while others are using SCCP (CP-6921). The problem is, that when calling fro...

Lukas Krejci · 03-07-2013

Hello,I have a problem with configuring the CUCME 8.6 (Cisco 2911/K9) with the SPA303 IP phone. In our company, we have several IP phones (CP-6921), which are configured and registered via SCCP and everything work perfectly. However, we have several...

Lukas Krejci · 03-09-2022

Thank you @Rob Ingram for your great answer. Now I can see what is the cause of this problem.However, before I upgrade the VPN to the IKEv2, it would be great, if there is any tool, that I can use, to connect to the IPSec VPN from the Windows 10 remo...

Lukas Krejci · 09-02-2020

Now when I try to debug with voip ccapi, I get the following log:Sep 2 15:48:42.235: //-1/xxxxxxxxxxxx/CCAPI/cc_set_post_tagdata: CALL_ERROR; Avlist Set Is Failed Sep 2 15:48:42.235: //-1/D8D52C5892B9/CCAPI/cc_api_display_ie_subfields: cc_api...

Lukas Krejci · 09-02-2020

So another progress for the problem number 2 - I have added the following lines to the "voice service voip": ip address trusted list ipv4 0.0.0.0 0.0.0.0Now, the CME is sending back "SIP/2.0 404 Not Found": Sep 2 14:38:13.701: //7019/006E13C7915...

Lukas Krejci · 09-01-2020

Hi Carlo,thank you for your answer. In the meantime, the registration the the ISTP is now working so that we can make outgoing calls. Now there are two main problems, that we need to solve: 1. Our phones are registering twice - one for our CME is OK,...

Lukas Krejci · 11-24-2015

I was trying to upgrade the firmware, but with no luck so far. After some searching, I have found, that my current CME version does not support another 6921 IP phone firmware version: http://www.cisco.com/c/en/us/td/docs/voice_ip_comm/cucme/requireme...

Member Since	‎03-07-2013 02:22 AM
Date Last Visited	‎03-09-2022 10:31 PM
Posts	19
Total Helpful Votes Received	10

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Cisco 892 - IPSec VPN from AnyConnect (Windows 10) not working

Connect authenticated SIP trunk from CME to ITSP sip server

Automatic call recording on SPA525G

DTMF selection not working with SCCP phones

How to configure the CUCME 8.6 and SIP registration (for SPA303 IP phone)

Re: Cisco 892 - IPSec VPN from AnyConnect (Windows 10) not working

Re: Connect authenticated SIP trunk from CME to ITSP sip server

Re: Connect authenticated SIP trunk from CME to ITSP sip server

Re: Connect authenticated SIP trunk from CME to ITSP sip server

I was trying to upgrade the