IP Telephony and Phones

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Hi I am facing an issue with maximum simultaneous PSTN calls in our office. We are currently running CUCM 8.6 with VGW 2801 router; 8 FXO lines. All lines are working fine. At any given time, I am able to use only max 5 lines for PSTN calls (incoming...

binu by Level 1
  • 743 Views
  • 4 replies
  • 0 Helpful votes

HiI have a 7921 phone registered with CUCM 8.6. This phone is not able to dial out (internal or external). On dialling any number for outgoing call, the message on screen is "Call in progress" and it stays that way, until I manually End Call.Any idea...

binu by Level 1
  • 1268 Views
  • 8 replies
  • 0 Helpful votes

We configured a sip trunk between Call Manager(v7.1.5) to a nortel switch.  We are able to call from CCM to nortel fine using the sip trunk.  When the nortel side tries to call ccm using the sip trunk they get reorder.  Is there a way in rtmt using t...

RichSS.75 by Level 1
  • 3220 Views
  • 1 replies
  • 0 Helpful votes