IP Telephony and Phones

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Hello,So we have two gateways at our main office that are feed from our NOC provider for VOIP services. Both Gateway 1 and 2 are 4331.We started getting wierd issue with some of our DID at our building locations were not recieving calls. However dial...

rtarson by Level 1
  • 391 Views
  • 3 replies
  • 1 Helpful votes

Hello,I ran into an issue with ATT PRI and hope someone can shed some light.We have a ATT PRI connected to a Avaya PBX and we are going to migrate the legacy system to our centralized CM cluster.  I configred a Cisco 2951 ISR router running MGCP.  I ...

markcarat by Level 1
  • 1624 Views
  • 8 replies
  • 0 Helpful votes

Dear AllI have Cisco CP 3905 phone in our office. I just want to know that it support 3pcc Firmware or not ?Please confirm. I want to register this phone with another vendor IPPBX .Is it possible or not ?