[OpenSER-Users] Help Required - OpenSer+Asterisk Integration

[srinivas Antarvedi]

Hello all,
i am currently working on integration of asterisk and openser with the
following call flow

UAC1,UAC2            Single WAN connection
OPENSER              ASTERISK
|                                                        |
| --------------REGISTER-2 ------>|----------REGISTER-2
----------->|                                |
|<-------------------200-2---------------|<------------200-2----------------------|
|
|
|
|                                |
|-----------------INVITE-1----------->|---------------INVITE-1------------->|
|
|<--------------------407-1-------------
|<----------------407-1------------------|                                |
|--------------------ACK-1------------>|-----------------ACK-1--------------->|
                               |
|
|
|                                |
|-----------------INVITE-2----------->|------------INVITE-2---------------->|-------INVITE-2---------->|
|<------------INVITE-102------------|<------------INVITE-102-------------|<-----INVITE-102---------|
|
|
|                                 |
|
|
|                                 |
|---------------180-102--------------->|---------------180-102--------------->|-------180-102------------->|
|<-----------------180-2----------------|-----------------180-2-------------------|<------180-2------------------|
|
|
|                                 |
|
|
|                                 |
|---------------200-102--------------->|---------------200-102---------------->|-------200-102------------->|
|<-----------------200-2----------------|-----------------200-2--------------------|<----200-2--------------------|
|                                           |
                                          |
|
|
|
|                                  |
|--------------ACK-2----------------->|---------------ACK-2------------------->|--------ACK-2-------------->|
|<-----------------ACK-102-----------|-----------------ACK-102---------------|<-----ACK-102--------------|


1)users REGISTERED at openser
2)INVITE goes through openser to asterisk and back again to openser
  then from openser to the respective user agent
3)actually there are 2 call-leg situation at asterisk( no: 2 and no:102)
4)both openser and asterisk running behind single WAN connection and both
are
running with private IPs and in the gateway router inbound packets are
forwarded
to openser

is it feasible architecture as i described above because i want to put
total setup behind NAT

suggestions required


Thanks in advance
Srinivas Antarvedi
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