Dial Paging from CM to IP Office Page Group

[NYSTECH]

IPO 11.1.3 and CM 6

The customer is in the process of migrating over to IP Office from CM system. There are multiple sites. Not all going to be cut over at same time. They can dial between systems by using 0 as an access code and then extension on both systems
They want ability to dial from CM system to any page group on IP Office.
I have created a system short code on the IPO.
85XXX
Dial page
N
0

I created dial pattern on CM 085XXX

If dialed from IPO side it works fine. But, when dialed from CM it just rings the HG
any help would be appreciated

 

[sizbut]

What sort of trunks are being used for the interconnection?

Stuck in a never ending cycle of file copying.

 

[NYSTECH]

Sorry forgot to include that. It is a SIP trunk through Session Manager. They don't have any SM licenses.