[AsteriskBrasil] Received response: "Forbidden" em um Grandstream HT-503

[Vitor Mazuco]

Ola a todos!

Estou com um problema de ligação, não estou conseguindo receber
ligações de meu ASTERISK para o meu FXO Grandstream.

Ele dá erro de "Forbidden" from" conforme as msg abaixo.

Já tentei de tudo, mas nao acho o problema.

Lembrando que eu uso um LOAD BALANCE nesse Grandstream para fazer o
balanceador de rede.

Seria esse um problema de NAT/Firewall?

Obrigado quem puder me ajudar.

Log na CLI:

Using SIP RTP CoS mark 5
    -- Executing [27100 em ramais:1] MixMonitor("SIP/2000-0000bd8b",
"/media/HDExterno/gravacoes/feitas/APTO/27100/1489675579.120546.wav")
in new stack
    -- Executing [27100 em ramais:2] Dial("SIP/2000-0000bd8b",
"SIP/136/100,60,tT") in new stack
  == Begin MixMonitor Recording SIP/2000-0000bd8b
  == Using SIP RTP CoS mark 5
    -- Called SIP/136/100
[2017-03-16 11:46:19] WARNING[1554][C-000098b9]: chan_sip.c:23843
handle_response_invite: Received response: "Forbidden" from
'<sip:2000 em 192.168.25.24:5089>;tag=as57804b2e'
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Auto fallthrough, channel 'SIP/2000-0000bd8b' status is 'CHANUNAVAIL'
  == MixMonitor close filestream (mixed)
  == End MixMonitor Recording SIP/2000-0000bd8b


SIP Debuug:

Called SIP/136/100

<--- SIP read from UDP:192.168.25.169:3329 --->
SIP/2.0 100 Trying
Via: SIP/2.0/UDP 192.168.25.24:5089;branch=z9hG4bK4433efa4;rport=5089
From: <sip:2000 em 192.168.25.24:5089>;tag=as62bede9e
To: <sip:100 em 192.168.25.169>
Call-ID: 692c5d293d0fae0853872d6a3206af86 em 192.168.25.24:5089
CSeq: 102 INVITE
Supported: replaces, path, timer, eventlist
User-Agent: Grandstream HT-503 V2.0A 1.0.14.1 chip V2.2
Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER, UPDATE
Content-Length: 0

<------------->
--- (10 headers 0 lines) ---

<--- SIP read from UDP:192.168.25.169:3329 --->
SIP/2.0 403 Forbidden
Via: SIP/2.0/UDP 192.168.25.24:5089;branch=z9hG4bK4433efa4;rport=5089
From: <sip:2000 em 192.168.25.24:5089>;tag=as62bede9e
To: <sip:100 em 192.168.25.169>;tag=1820807938
Call-ID: 692c5d293d0fae0853872d6a3206af86 em 192.168.25.24:5089
CSeq: 102 INVITE
Supported: replaces, path, timer, eventlist
User-Agent: Grandstream HT-503 V2.0A 1.0.14.1 chip V2.2
Allow: INVITE, ACK, OPTIONS, CANCEL, BYE, SUBSCRIBE, NOTIFY, INFO, REFER, UPDATE
Content-Length: 0

<------------->
--- (10 headers 0 lines) ---
Transmitting (NAT) to 192.168.25.169:3329:
ACK sip:100 em 192.168.25.169 SIP/2.0
Via: SIP/2.0/UDP 192.168.25.24:5089;branch=z9hG4bK4433efa4;rport
Max-Forwards: 70
From: <sip:2000 em 192.168.25.24:5089>;tag=as62bede9e
To: <sip:100 em 192.168.25.169>;tag=1820807938
Contact: <sip:2000 em 192.168.25.24:5089>
Call-ID: 692c5d293d0fae0853872d6a3206af86 em 192.168.25.24:5089
CSeq: 102 ACK
User-Agent: Asterisk PBX 13.10.0
Content-Length: 0


---
[2017-03-16 11:34:53] WARNING[1554][C-000098af]: chan_sip.c:23843
handle_response_invite: Received response: "Forbidden" from
'<sip:2000 em 192.168.25.24:5089>;tag=as62bede9e'
Scheduling destruction of SIP dialog
'692c5d293d0fae0853872d6a3206af86 em 192.168.25.24:5089' in 6400 ms
(Method: INVITE)
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Auto fallthrough, channel 'SIP/2000-0000bd7a' status is 'CHANUNAVAIL'
  == MixMonitor close filestream (mixed)
  == End MixMonitor Recording SIP/2000-0000bd7a

See my sip.conf

;;
[136]
type=friend
defaultuser=136
secret=XXXXX
qualify=yes
;nat=no
nat=force_rport,comedia
context=ramais
;insecure=invite,port
disallow=all
allow=ulaw,alaw,gsm
host=dynamic
canreinvite=no
regext=136
callgroup=1
pickupgroup=1