I am new to the world of VoIP and I have several questions... I guess the easiest way to start off is to list the items that I have and go from there... If anyone has helpful information on the peices that I may need or the peices that are missing, or if there is a flaw in my logic, please let me know.
I have the following stuff:
4 cisco 7960G IP phones, with power bricks
1 cisco 2621XM router
1 cisco 2924XL EN switch
I need to know if it is possible to buy an expansion card for the 2621XM router to allow for it to accept the connections of the ip phones, or if the IP phones can be connected to the switch...Currently I am just looking at setting up the phones for inner office communications, no outside phone line or call will come in to the ip phones.
I honestly have not been able to find any (and i do mean ANY) information on the internet about cisco and their VoIP setups...
I do understand that it might not even be possible to do with the current equipment that I have, so suggestions are welcome.
I have been under the impression that all i need to do is hook up the router and trunk it to the switch, load the correct IOS to the router for the VoIP functionality, set up the IOS for SIP protocol, load the IP phones with the correct firmware for SIP and then plug the IP Phones into the switch.... is this correct?
and then if I would like to add and analog incoming connection to my VoIP system, I need to buy an expansion module for the Cisco router; I believe it is a DID expansion module.... and that will allow for an incoming analog telephone call to the IP Phones....?
I know I seem totally lost, well I promise you it feels that way to me... any help is appreciated. Thank you in advance.