Cisco TelePresence MCU MSE Series

Failed calls or recordings from an MCU or IP VCR registered with Asterisk

Why does calling out from conferences on Cisco TelePresence MCU or recordings on Cisco TelePresence IP VCR registered with Asterisk fail?

By configuring Cisco TelePresence MCU or IP VCR and conferences or recordings in the sip.conf file in your Asterisk installation you can call them directly from your SIP phone. However, calling out from the MCU or IP VCR can fail based on the order of the configuration within the sip.conf file. If the MCU or IP VCR is configured before its conferences or recordings in the sip.conf file, then Asterisk can reject the call with the message: “Failed to authenticate user…”

To avoid this happening, configure the conferences or recordings first, then configure your MCUs or IP VCRs at the end of the sip.conf file. Alternatively, configure the MCU or IP VCRs and conferences or recordings without a password - or upgrade Asterisk to at least version 1.4.17.

This article applies to the following products:

  • Cisco TelePresence IP VCR 2200 / MSE VCR blade
  • Cisco TelePresence MCU 4200 / MSE 8420
  • Cisco TelePresence MCU 4500
  • Cisco TelePresence MSE 8510 blade

April 8th, 2011 TAA_KB_20