[asterisk-users] Redundancy: PRI Load share +SIP Acctive/Standby

[babak]

Hi
For connecting SIP phone users through PRI  to local exchange we need redundancy.
It is possible using 2 servers each server have 2 instance of Asterisk (totaly 4). 
one instance  in each server works in load share with instance running on 
other server converting  E1 PRI to SIP Trunk and another instance on 
each server for registering SIP phones working in active/standby mode 
connected via above SIP Trunk.
Please tell me your suggestion , is there simpler solution ?

Regards
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