Monday, July 14, 2008

OCS: How many ports required for outbound telephony calls

Here is a nice question, suppose that you have your PBX infrastructure and you have OCS 2007 as well, you want to allow outbound/inbound calls from OCS to the external world, so how many port you need..

Well, this depends on the configuration you have, here is the options:

- For E1/T1 connection you don’t need any extra configuration, why, because if you have E1 this is will be an ISDN interface that has 30 channel so you have a 30 calls (outbound/inbound) in total so you might need to recalculate how many calls you do and if you need extra E1s, same applies for T1.

- If you have analog lines, then each analog line can do 1 call at a time, so you might need to recalculate that.

- If you have primacells, same here as analog lines.

- For faxing (In total) treat is a normal phone call so if you do faxing using your E1, so you have 30 channels, if analog lines same as above.


Thursday, July 3, 2008

CCM 6 + CUPS + OCS 2007 integration notes:

I would like to summarize the integration notes for the above configuration, kindly find below the latest notes for OCS/CUP integration:

- To have CCM/OCS integration you will need to have a SIP trunk between the Mediation server GW facing NIC and the CCM, otherwise it will not work (calls will get service unavailable errors).

- To have Voice-mail auto redirection (a phone missed called redirected directly to the extension’s Voice mail) you will have to enable caller-ID on the SIP trunk, otherwise the user will get an auto-attendant.

- For Auto-attendant feature in Exchange, just create a new auto-attendant as voice enabled, assign an extension and create an Extension routing rule on the CCM to redirect the call to the Exchange feature and it will work.

- To do presence integration you will need CUPS in-place, we didn’t have the time to test that.

- Feature that has been tested successfully:

o PC to phone calls

o Phone to PC calls.

o Dual forking (from calls coming from OC).

o Multi-group conferencing (OC – Phone – phone).

o Voice mail and missed call notification.

o Call forwarding to phone, PC and VM.