IP Telephony and Phones

Hi,We came across weird issues. Computers connected to Switch are not working correctly when connected via cisco desk phone - showing unidentified network. Without desk phone computers working fine. Issue started +- a week ago.port config interface G...

Good day, I have the following network architecture:Internet < -- > FortiGate < -- > Cisco Router (CCME) < -- > Cisco IP Phone < -- > PCThe DHCP server must be activated on the FortiGate, dose this is possible?Best regards, 

Started getting disconnect code 41 after 2 rings on only 1 extension.  If you answer the call before the 2nd ring the call completes as normal. All other extensions work fine.See call detailssuccessful callMessage DetailsSENDER: 172.27.199.20GUID: 8b...

Good Morning,About 4 months ago users started to complain that their phones sounded garbled and had a lot of static.Recently, about 50% of our external sites can’t establish “Multiple Frames Established” through their T1 PRI interface.One of our site...

CUCM 12.5 / single cluster; 1 pub 2 subsWorking on moving to E.164 call routing.  we have 30 PRIs, that are located at remote offices, as well as our main campus.  We are hoping to sign off on a SIP trunk deployment this week. In the mean time, we ar...

Hello ,  we are replacing the old voice gateway a cisco 3900 by a new isr 4400 series, it was working fine with the of one but after making the transcript on the new one we see this errors on the logs :   025893: Oct 25 2023 19:39:16.982 GMT: //-1/xx...

Dear All,I got problem with outgoing call on sip-trunk, it drops after 19 sec, like after timer..?The call is connected successfully , the sip server send the 200 ok and the gateway send ack , but this process is continuing until the call is disconne...

I am new to Cisco CUCM. I am trying to make a call from sandbox using postman. But I didn't find proper solution for that. Is it possible to make a demo call from postman?

Dear Cisco Team, Greetings!!!I have an 8841 phone that doesn’t boot us. When i plug in the ethernet cable the mute button lights up read and the handset led shows red too but nothing else happens even the screen doesn’t show anything no cisco logo no...

I have a cluster CUCM 14.5 There are a list of end users on this cluster.The Jabber client only finds two users from this list. Though all users were created equally. All users have the same Service Profile. Jabber uses UDS type I can't understand wh...

Hello , I try to generate certificate multi–SAN in CUCM PUB and I got error. "csr export operation failed for the nodes cup-pub, cucm-sub " my CUCM version is 11.5 the replication is good. any idea?

good day,I have a Cisco Call Manager Express on my router it works locally (it can make calls locally), But I want that my CCME be able to do an outside call over Internet, how is that done?best regards,