IP Phone 6921

Unanswered Question
Sep 18th, 2013
User Badges:

Hello all,

i have 10 IP Phones 6921 , 3900 , VCS, MCU series router but i don't know how should i connect the phones.My question is - should i connect the phones to different outside ip-s or what?Should the phone connect to the VCS? If i connect the phone to an internal ip like how should a outside ip reach it ? Thanks and please can you give me some helpful books . THANKS!

  • 1
  • 2
  • 3
  • 4
  • 5
Overall Rating: 0 (0 ratings)
Dennis Mink Wed, 09/18/2013 - 18:13
User Badges:
  • Blue, 1500 points or more

What are you talking about dude?!   can you please add a Visio for instance so we can look at your design and requirements?


Please remember to rate useful posts, by clicking on the stars below.


Svetoslav Simeonov Thu, 09/19/2013 - 04:29
User Badges:

I know it sounds stupid... Can i register my ip phone to the VCS or i must have some other device? Thanks!

Leo Laohoo Thu, 09/19/2013 - 04:39
User Badges:
  • Super Gold, 25000 points or more
  • Hall of Fame,

    The Hall of Fame designation is a lifetime achievement award based on significant overall achievements in the community. 

  • Cisco Designated VIP,

    2017 LAN, Wireless

CP-6921 can only do voice.  I believe VCS is a video server for Telepresence.

The answer is no.

If you want your CP-6921 to do voice, then you need a CallManager or CUCM.

Otherwise, CP-6921 support SIP and you sure can get the 6921 to talk to a low-cost call server like Asterisk/FreePBX/TrixBox. 

Svetoslav Simeonov Wed, 09/25/2013 - 23:40
User Badges:

Sorry for the stupid question but can i "make a PBX" ... if i install FreePBX for example on a computer that will be my CallManager or CUCM , am i understanding you right or i'm talking nonsence?



This Discussion