How many software MTP sessions ISR G2 Router can support?

[wclee1004]

I found that ISR G1 can support up to 1,000 individual streams(sessions), couldn't find ISR G2's maximum# of stream.

Anybody has the number?

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Router  configurations permit up to 1,000 individual streams, which support 500  transcoded sessions. This number of G.711 streams generates 10 Mbytes  of traffic. The Cisco ISR G2s and ASR routers can support significantly  higher numbers than this.

[wclee1004]

We prepared 2851 router to test multi-tenant MTP.

But, we have an issue on this implementation.

Cisco TAC mentioned, this will not work on VRF environment.

Is there any other way to put multiple MTP groups on single router in VRF environment?

These are comments from Cisco,

"Your interfaces that you bind to in the ccm groups are members of different VRF's.  This is not supported."

"SCCP using a VRF in any case, appears to be unsupported.  Global VRF only."