Pessoal, sempre que faço uma ligação depois de uns segundos ou cai ou fica
mudo...
Fica assim na console:

Connected to Asterisk 1.8.23.0 currently running on Asterisk (pid = 16799)
Verbosity was 0 and is now 33
    -- Registered SIP '9962' at 177.202.200.238:5060
       > Saved useragent "Zoiper r18976" for peer 9962
[Aug 13 09:44:35] NOTICE[16819]: chan_sip.c:21575 handle_response_peerpoke:
Peer '9962' is now Reachable. (52ms / 2000ms)
  == Using SIP RTP CoS mark 5
    -- Executing [04821079198@entrada:1] Dial("SIP/9962-00000000",
"SIP/vono/04821079198,90,tTwW") in new stack
  == Using SIP RTP CoS mark 5
    -- Called SIP/vono/04821079198
    -- SIP/vono-00000001 is making progress passing it to SIP/9962-00000000
    -- SIP/vono-00000001 answered SIP/9962-00000000
[Aug 13 09:45:39] WARNING[16819]: chan_sip.c:3982 retrans_pkt:
Retransmission timeout reached on transmission
ODMwYjkxZmM3OWYzZWFhOGUxZWRhOTEzNDYwOTEyMGE. for seqno 2 (Critical
Response) -- See
https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions
Packet timed out after 6400ms with no response
[Aug 13 09:45:39] WARNING[16819]: chan_sip.c:4011 retrans_pkt: Hanging up
call ODMwYjkxZmM3OWYzZWFhOGUxZWRhOTEzNDYwOTEyMGE. - no reply to our
critical packet (see
https://wiki.asterisk.org/wiki/display/AST/SIP+Retransmissions).
  == Spawn extension (entrada, 04821079198, 1) exited non-zero on
'SIP/9962-00000000'
Asterisk*CLI>

Meu sip está assim...

[general]
disallow=all
allow=ulaw
port=5070
bindaddr=0.0.0.0
context=entrada
register=>[email protected]:5060/xxxxx
language=pt_BR
externip=xxx.xxx.xxx.xxx
localnet=192.168.0.0/24
localnet=172.16.100.0/255.255.254.0
externhost=xxx.xxx.xxx.xxx
externrefresh = 15
bindport=5070

[vono] ;o nome do ramal deve ser o mesmo login da vono
type=friend
username=xxxxx
secret=senha
fromuser=xxxxx
fromdomain=vono.net.br
context=entrada
disallow=all
allow=alaw
allow=ilbc
allow=ulaw
host=vono.net.br
insecure=port,invite
qualify=no
port=5060
aut=md5
nat=yes
canreinvite=no
dtmfmode=rfc2833


-- 
Atte.
Fernando Trilha
Analista de Suporte
[email protected] <[email protected]>
::Soluções em informatica e redes corporativas::
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Media Gateways de 1 a 64 E1s para SIP com R2, ISDN e SS7;
Intercomunicadores para acesso remoto via rede IP. Conheça em www.Khomp.com.
_______________________________________________
ALIGERA – Fabricante nacional de Gateways SIP-E1 para R2, ISDN e SS7.
Placas de 1E1, 2E1, 4E1 e 8E1 para PCI ou PCI Express.
Channel Bank – Appliance Asterisk - Acesse www.aligera.com.br.
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