VOIP requirement with 2 session target

[s3k]

HEllo
i need a solution on this.

I have a Voip router where i can connect to 2 different Session Targets. I also have 2 leasedlines to internet thru which i can reach the session target.
One:
How can I configure router in such a way that all traffic going thru my first leasedline(SER 0) USES THE sESSION TARGET-1 and the second leasedline(SER 1) USES THE sESSION TARGET-2.


two:
I have 2 E1s connected to my router from a pBX. CAn i specify that calls coming in from this E1 go out thru my Ser0, calls from second E1 go out thru Ser1.

thanks

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