[Serusers] Do Call but Can't Receive Calls (NAT & Port Forwarding)

[Ozan Blotter]

I'm using SER on a Public IP, do IPv4 and IPv6 Conversion, Nathelper
Module and RTPProxy. Both parties are behind NAT and gateways/routers
arranged to forward 5060 UDP and TCP ports to LAN IP's of the ATA's on
both side. There are 3 Registered Users, 8334454556 can call 8334843600,
everything is okay, each party talks, the quality of voice is great. But
when 8334843600 calls 8334454556, there's no ringing tone, nothing
happens. When i check wih serctl util, i realized one thing like ;

Contact   : 'sip:8334454556 at 81.215.239.231:5060'
Call-ID   : '13491B1111341212 at 81.215.239.231' <<< This is Public IP

Contact   : 'sip:8334843600 at 85.96.192.140:5060'
Call-ID   : '1360D1B911761212 at 192.168.0.101' <<< This is LAN IP

What may be wrong with SER or ATA's.


root at sipproxy~> serctl ul show
Dumping all contacts may take long: are you sure you want to proceed? [Y|N] y
===Domain list===
---Domain---
name : 'location_inet6'
size : 512
table: 0x422b80f8
d_ll {
    n    : 0
    first: (nil)
    last : (nil)
}
---/Domain---
---Domain---
name : 'location_inet4'
size : 512
table: 0x422b6090
d_ll {
    n    : 3
    first: 0x422ba1f8
    last : 0x422ba100
}

...Record(0x422ba1f8)...
domain: 'location_inet4'
aor   : '103201'
~~~Contact(0x422ba328)~~~
domain    : 'location_inet4'
aor       : '103201'
Contact   : 'sip:103201 at 212.156.169.125:5060'
Expires   : 1491
q         :       0.00
Call-ID   : '7320E5ADBA8E1526 at 212.156.169.125'
CSeq      : 70
replic    : 0
User-Agent: 'Unknown'
State     : CS_NEW
Flags     : 0
next      : (nil)
prev      : (nil)
~~~/Contact~~~~
.../Record...
...Record(0x422ba2e0)...
domain: 'location_inet4'
aor   : '8334454556'
~~~Contact(0x422ba238)~~~
domain    : 'location_inet4'
aor       : '8334454556'
Contact   : 'sip:8334454556 at 81.215.239.231:5060'
Expires   : 56
q         :       0.00
Call-ID   : '13491B1111341212 at 81.215.239.231'
CSeq      : 128
replic    : 0
User-Agent: 'Unknown'
State     : CS_NEW
Flags     : 0
next      : (nil)
prev      : (nil)
~~~/Contact~~~~
.../Record...
...Record(0x422ba100)...
domain: 'location_inet4'
aor   : '8334843600'
~~~Contact(0x422ba148)~~~
domain    : 'location_inet4'
aor       : '8334843600'
Contact   : 'sip:8334843600 at 85.96.192.140:5060'
Expires   : 32
q         :       0.00
Call-ID   : '1360D1B911761212 at 192.168.0.101'
CSeq      : 8
replic    : 0
User-Agent: 'Unknown'
State     : CS_NEW
Flags     : 0
next      : (nil)
prev      : (nil)
~~~/Contact~~~~
.../Record...

---/Domain---
===/Domain list===
root at sipproxy~>



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