Different manipulation of channels in a Nx64 service

I have the next situation:

ISDN TE_A1 <---> [        ]       [        ] <---> ISDN TE_A2
ISDN TE_B1 <---> [        ]       [        ] <---> ISDN TE_B2
ISDN TE_C1 <---> [AGW(PE1)] <---> [AGW(PE2)] <---> ISDN TE_C2
...              [        ]       [        ]
ISDN TE_D1 <---> [        ]       [        ] <---> ISDN TE_D2

Each AGW finishes several ISDN interfaces (then, several TDM circuits).

* ISDN_TE_A1 has stablished a 64kbps call with ISDN_TE_A2 using the RTP 
codec CLEARMODE.
* ISDN_TE_B1 has stablished a 64kbps call with ISDN_TE_B2 using the RTP 
codec G.711-u without VAD
* ISDN_TE_C1 has stablished a 64kbps call with ISDN_TE_C2 using the RTP 
codec G.711-u with VAD
...
* ISDN_TE_D1 has stablished a 64kbps call with ISDN_TE_D2 using the RTP 
codec G.711-u without VAD

(the codec to use for each call would be indicated by an external 
signalling to the TDMPWs, such as Megaco)

Is it possible to use a single TDMoPW TDMoIP AAL2 to emulate all these 
calls?

If this is not possible to use different codec, at least, would it be 
possible to use a single TDMoPW TDMoIP AAL2 to emulate all calls with 
the same type of codec and media manipulation (i.e. calls "ISDN_TE_B1 - 
ISDN_TE_B2" and "ISDN_TE_D1 - ISDN_TE_D2").