Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

VoIP planning help

Hi All,

I have currently been assigned with starting the implementaion of moving in the direction of VoIP over my wan. My current phone system at the core of my network is a siemens. It has IP capabilities, but I am very unfamiliar with it. Bascially we want the whole four digit dialing deal over the wan. I have installed 2800 series routers in all of my remote sites in prep for this. Is it going to be easier for me to just install voice modules in these routers to do this? or to use my existing pbx to do trunking? I am very confused on where to even begin my research.

TIA,

R

4 REPLIES
Silver

Re: VoIP planning help

If your existing PBX is going to play the role of "Call Agent" in Cisco vernacular, then you should be able to deploy the 2800 routers as h.323 gateways to your siemens system. You want to allow for the proper DSP resources in the routers to allow branch access to PSTN.

HTH

Community Member

Re: VoIP planning help

Thanks for your reply. Do you know of any good documentation on this subject?

TIA,

R

Community Member

Re: VoIP planning help

We do not use a Siemens phone system, but be warned that integrating non-voip systems (PBX) to a VOIP system is not 100%. You will always have some problems (i.e. forwarding, transferring, dialing, etc). I have colleges at other companies that can also agree with this.

Re: VoIP planning help

Not quite true.

We operate a large mixed TDM-VoIP network including Cisco CCMs, Siemens Hicom/HiPath and Cisco voice routers.

Configure the trunks between Siemens PBXes and the Cisco gateways on QSIG and everything will work --> Calling name delivery, callback, call transfer / forward and etc.

If you know what are you doing you will have no problems at all (unless looking for some very very very fancy features).

126
Views
3
Helpful
4
Replies
CreatePlease to create content