Archive for July, 2008

OCS: How many ports required for outbound telephony calls

July 14, 2008 Leave a comment

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.


Categories: Exchange and UC

CCM 6 + CUPS + OCS 2007 integration notes:

July 3, 2008 Leave a comment

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.


Categories: Exchange and UC
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