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Call flow on VCS c/e

vikramdutta85
Level 1
Level 1

Hi Geeks,

I am posting this to understand "How stuff works". Below is the Design.

i have a VCSc configured with SIP domain of example.com  (we have internal DNS server to resolve it)

i have a VCSe configured with SIP domain of cisco.com  (we have external DNS server to make it globally routable)

i create a traversal link bw VCSc and VCSe.

how will the call flow  between Ep A and Ep B

Scenario A

My Ep A is  Ex90@example.com  dials a Ep B Jabber client (home user) registered on VCSe jabber@cisco.com

how will call flow; i want to understand the flow from beginning ie Ex 90 will send an register message to VCSc etc etc.

Scenario B :

if Ep A Ex90@example.com call a 3rd party (seperate company) =  ( inter business calling ) End point ie stranger@Dell.com

how will the call flow.

Please excuse me for asking Layman Explanation:

Thanks in advance

// Vikram

1 Reply 1

ahmashar
Level 4
Level 4

Hi Vikram,

I just want to remind you that registration process is different that call flow process.

please have a look at this link which covers several call flow scenarios including the two scenarios you mentioned above.

http://www.cisco.com/web/DK/assets/docs/presentations/Video_Update_Video_ports_31mar11.pdf

regards, Ahmad