Collaboration, Voice and Video Blogs

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I just finished to write an interesting document, instead of multi SAN Certificate, this document shows how to configure different certificates for WebBridge and CallBridge using different CA Server.

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As mentioned previously in my previous article and following the same idea of certificate pinning in Cisco Meeting Server, to demonstrate this concept added since version 3.0. I used two different CA to sign :1-The WebBridge certificate with CA's certific... Read More

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Certificate pinning is introduced on cisco meeting server starting in CMS 3.0 to help prevent man in the middle attack.But what is the Certificate Pinning?Traditionally, SSL Handshake consists on the validation of the server's certificate, let's say colla... Read More

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In a Clustering over the WAN deployment, securing the ICCS (Intra-Cluster Communication Signaling) traversing the WAN can be a requirement. The IPSEC VPN Policy between nodes can be configured to secure the ICCS Traffic.To quickly verify that the IPSEC is... Read More

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Attracted by the concept of dial plan and the passion of writing, I launched a challenge to write a workbook with practical scenarios covering in details this concept, the result is a workbook with 30 practice labs treating many components such route patt... Read More

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Understanding Media Negociation in Interworking / Traversal Call : SIP <-> H323 through Expressway. Inside SDP and H245. Both signaling and Media goes through the Expressway so the IP address of expressway is offered to both SIP and H.323 endpoints throug... Read More

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Sometimes you troubleshoot the phone presence status issue, or you are wondering how the status is retrieved by IMP, the best place to start is to look at the SIP Publish message sent by the CUCM to IMP, Capture the SIP Publish message using wireshark, in... Read More

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The translation pattern is the most important tool in the Call Routing Process on Cisco Unified Communication manager. By definition a Translation Pattern is used to match the DIALED NUMBER (CALLED). After a match is found we perform a digits manipulation... Read More

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Sometimes, you want to populate the Self Service User ID and the Primary Extension + the Conference Now Meeting Number automatically with the IpPhone or Telephone Number LDAP Attribute used in the LDAP Directory configuration page when importing AD users ... Read More

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A Cisco 2022. május 10-én bejelentette a Webex Room család legújabb tagját a Room Bar-t. Az új eszköz a népszerű Webex Room USB/Mini kategóriájában teszi elérhetővé azokat a funkciókat, amik korábban csak a nagyobb Webex Room Kit-től felfelé voltak jellem... Read More

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The Call Bridge Group feature on Cisco Meeting Server is an advanced optimization to avoid excessive distribution calls that requires the option of Accept Replaces Header in the SIP Trunk Security Profile in addition to the rerouting CSS. Sometimes you di... Read More

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STUN hole-punching techniques to open firewall ports.It works with Full CONE NAT AKA Static NAT. But it doesn't work with Symmetric NAT AKA PAT. This is why TURN was introduced to relay the call between two MRA Endpoints.

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Expressway (Large OVA or CE1200) is the recommended solution for deployments withmedium web app scale requirements (i.e. 800 calls or less). Expressway (Medium OVA) is therecommended solution for deployments with small web app scale requirements (i.e. 200... Read More

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Understanding a concept takes effort. Explaining takes a lot of effort.

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Partner Hub Analytics is all new Now you can view Customer Analytics on a single dashboard. More customer information is readily available including packages, number of customers and number of users at each customer. The new dashboard makes it easy for pa... Read More

Latest Contents

What eactly does the cup Certificate do?

Created by Scuromano on 05-25-2022 12:08 PM

I'm trying to find out what exactly the cup certificate does and why nothing broke when it expired? This is on version 10.5.2., 4 node CUCM cluster and 2 node CUPS/IM&P cluster. It's a self signed Certificate. Does it really need to be reg... view more

Jabber mst

Created by tphancovcom on 05-25-2022 08:49 AM

When building the mst for jabber 14, on which line(s) can I specify Jabber advance login setting? Select account type = select "Cisco communication 9 or later" selectlogin server = select " user the following server" then "server name" in the s... view more

How does mute work in a SIP call flow

Created by tonyppe on 05-25-2022 08:05 AM

When a SIP call is muted, media RTP is halted. What is meant to happen in terms of SIP signalling? Does this fall under RFC 6337 for media hold? I have an issue where the call flow is like: softphone1 -> SBC-> SIP trunk -> Phone s... view more

SX80 Muting itself after an hour

Created by bryankaylor on 05-25-2022 07:15 AM

Why is the SX80 muting itself after an hour?

No ring tone and speaker

Created by RolandoTO on 05-25-2022 06:26 AM

I do not have a ring tone and can't hear my callers but using other phone, they say they hear me. I checked on audio in settings, I believe all is set well.What do I do to restore my ring tone and be able to hear my callers back again.