IP Telephony and Phones

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Dear All,   I would like to use the new-ish CUBE multivrf feature (documented here). One of the limitations is: Multi-VRF is not supported on TDM-SIP gateway What is actually meant by this? If I wanted to run say an MGCP controlled NIM-4FXS on the sa...

j.a.m.e.s by Level 7
  • 2947 Views
  • 12 replies
  • 0 Helpful votes

Good Afternoon,  I have a ticket open with Grandstream for thier DP750/720 cordless VoIP DeCT devices on my CUCM 11.5 cluster.  Background is that no matter what a customer sets as the ringtone on the handsets, incoming calls ring using the system to...

RAustin70 by Level 5
  • 3247 Views
  • 6 replies
  • 0 Helpful votes

I am working with a network phone system running CUCM 10, alongside CER and some other similar systems. Inside the phone network, calls to 911 are failing. The caller gets a rapid busy signal when they try. I can see the attempts in the CER call hist...

pbrackett1 by Community Member
  • 5963 Views
  • 33 replies
  • 0 Helpful votes