Skip to content

afterthenumber

Thoughts and experiences of a Cisco Collaboration engineer after clearing the CCIE lab…

  • Freelance Services
  • UC Applications
    • CUCM
    • sdl
    • sql
    • CUC
    • UCCX
    • IM and Presence
    • Cisco Jabber
    • Prime Collaboration
    • TelePresence
    • ExpressWay
    • WebEx
  • Development
    • AXL
    • SIP Normalization Scripting
    • sql
    • Software Engineering
  • Linux
    • ubuntu
  • IOS Devices
    • CUBE
    • IOS Media Resources
    • SRST
    • CME
    • Voice Gateways
    • ISDN
  • SIP
    • SIP Trunking
  • About Me
  • More

    Category: SIP

    Extracting CUCM SIP Trunk Information using SQL

    I am currently overseeing a large multi-cluster deployment with literally hundreds of SIP trunks spanning almost 10 leaf clusters, plus SME.  Maintaining configuration standardization on deployment with… Read more “Extracting CUCM SIP Trunk Information using SQL”

    December 2, 2019December 2, 2019 by jonathan

    Supporting CUBE NAT Integrations without Firewall ALG

    Overview Recently had a customer which wanted to connect to a public ITSP (Flowroute). Their network design required a dual-interface CUBE deployment model, with an “inside” private… Read more “Supporting CUBE NAT Integrations without Firewall ALG”

    December 21, 2018December 23, 2018 by jonathan

    CSCug20588 – Auto-Reg Failure – “Could not insert new row – duplicate value in a UN”

    Had an issue that’s affected multiple deployments that I’ve been working on.  At one of my clients in particular, this reached an escalation level.  Just sharing this… Read more “CSCug20588 – Auto-Reg Failure – “Could not insert new row – duplicate value in a UN””

    May 25, 2016April 18, 2018 by jonathan

    Cisco Meraki Managed Communciations MC74 IP Phone Released

    Cisco Meraki have released a new cloud-managed phone. Gotta say I love the look of the elegant slim-line design. The key to this deployment model’s appeal can… Read more “Cisco Meraki Managed Communciations MC74 IP Phone Released”

    May 19, 2016May 19, 2016 by jonathan

    CUBE URI-based Routing and Multiple Via Headers

    Cisco introduced some pretty cool URI enhancements for CUBE from 15.4(1)T that have added some great extensions to the CUBE feature set, and specifically include some fine-grained SIP routing… Read more “CUBE URI-based Routing and Multiple Via Headers”

    May 19, 2016May 19, 2016 by jonathan

    CUCM Video Codec Preferences Support – CSCuw53802

    Colleague called me for assistance with a video call that wouldn’t set up when dialling in to a VC bridge. The call flow was from a Polycom… Read more “CUCM Video Codec Preferences Support – CSCuw53802”

    May 18, 2016May 18, 2016 by jonathan

    VoIP Bandwidth Calculations

    If you’re preparing for a your CCIE Written or Lab exams, or (far more importantly) if you need to perform bandwidth sizing for a VoIP design or… Read more “VoIP Bandwidth Calculations”

    May 15, 2016April 13, 2017 by jonathan

    RFC 5411 – And Other Guides to the SIP Galaxy

    Given half a chance, I am always open to punt The SIP School as probably the best starting point for learning SIP out there.  I took this course some… Read more “RFC 5411 – And Other Guides to the SIP Galaxy”

    May 6, 2016May 8, 2016 by jonathan

    CUBE SIP Profiles – Normalizing Incorrect RURI/To Headers using Diversion

    Had a strange requirement today.  Needed to replicate a behaviour that is apparently quiet common on Asterisk, but haven’t seen it before myself. Our ITSP implemented a… Read more “CUBE SIP Profiles – Normalizing Incorrect RURI/To Headers using Diversion”

    March 18, 2016March 18, 2016 by jonathan

    Incorrect SIP Realm – CUBE Not Responding to 401 Unauthorized

    Had an issue today where we had to migrate a client as our ITSP migrated the client to a different SBC platforms.  After re-pointing, the SIP Trunk was failing… Read more “Incorrect SIP Realm – CUBE Not Responding to 401 Unauthorized”

    March 17, 2016March 23, 2016 by jonathan

    Posts navigation

    Older posts
    Website Powered by WordPress.com.
    afterthenumber
    Website Powered by WordPress.com.
    Privacy & Cookies: This site uses cookies. By continuing to use this website, you agree to their use.
    To find out more, including how to control cookies, see here: Cookie Policy
    • Follow Following
      • afterthenumber
      • Join 52 other followers
      • Already have a WordPress.com account? Log in now.
      • afterthenumber
      • Customize
      • Follow Following
      • Sign up
      • Log in
      • Report this content
      • View site in Reader
      • Manage subscriptions
      • Collapse this bar
     

    Loading Comments...