Não é possível fazer chamadas com asterisco e voz do google

Não consigo fazer ou receber chamadas com asterisco e google voice. Lembro-me de ter usado essa configuração anos atrás, então espero que funcione, mas só preciso de um ajuste sutil.

Posso ver que estou conectado:

*CLI> xmpp show connections
Jabber Users and their status:
       [xx] [email protected]     - Connected
----
   Number of clients: 1

Com asterisco no modo detalhado, esta é a saída que recebo:

*CLI>   == Using SIP RTP CoS mark 5
       > 0x7ff3b40073a0 -- Strict RTP learning after remote address set to: 192.168.1.15:4010
    -- Executing [18008008000@xx-google-out:1] Dial("SIP/xx-00000000", "Motif/xx/[email protected],,r") in new stack
    -- Called Motif/xx/[email protected]
    -- Motif/[email protected] is proceeding passing it to SIP/xx-00000000
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Auto fallthrough, channel 'SIP/xx-00000000' status is 'CHANUNAVAIL'
  == Using SIP RTP CoS mark 5
       > 0x7ff3b4000910 -- Strict RTP learning after remote address set to: 192.168.1.15:4012
    -- Executing [18008008000@xx-google-out:1] Dial("SIP/xx-00000001", "Motif/xx/[email protected],,r") in new stack
    -- Called Motif/xx/[email protected]
    -- Motif/[email protected] is proceeding passing it to SIP/xx-00000001
  == Everyone is busy/congested at this time (1:0/0/1)
    -- Auto fallthrough, channel 'SIP/xx-00000001' status is 'CHANUNAVAIL'
       > Saved useragent "CSipSimple_achill-22/r2457" for peer xx

extensions.conf:

[general]
static=yes
;writeprotect=no

; added from forum ...
writeprotect=yes

priorityjumping=no
autofallthrough=yes

[global]
;DIALOUT=9
;RINGTIME=30

[default]
include => xx-google-out
include => xx-google-in

;https://wiki.asterisk.org/wiki/display/AST/Calling+using+Google

[xx-google-out]
;exten => _1XXXXXXXXXX,1,Dial(Motif/xx/${EXTEN}@voice.google.com,,r)
;exten => _XXXXXXXXXX,1,Dial(Motif/xx/${EXTEN}@voice.google.com,,r)
;exten => _+1XXXXXXXXXX,1,Dial(Motif/xx/${EXTEN}@voice.google.com,,r)
exten => _1XXXXXXXXXX,1,Dial(Motif/xx/+${EXTEN}@voice.google.com,,r)


[xx-google-in]
exten => s,1,NoOp()
 same => n,Set(crazygooglecid=${CALLERID(name)})
 same => n,Set(stripcrazysuffix=${CUT(crazygooglecid,@,1)})
 same => n,Set(CALLERID(all)=${stripcrazysuffix})
 same => n,Dial(SIP/xx,20,D(:1))

módulos.conf

[modules]
autoload=yes

;#load => chan_motif.so
;#load => res_xmpp.so

motivo.conf:

[xx]
context=xx-google-in
disallow=all
allow=ulaw,g722
connection=xx

rtp.conf:

[general]
; specify start and end port range so firewall rules are easier to write
rtpstart=10000
rtpend=20000
icesupport=yes

sip.conf:

[xx]
allow=all
allowguest=no
type=peer
secret=SECRETGOESHERE
host=dynamic
context=xx-google-out

xmpp.conf:

[general]
[xx]
type=client
serverhost=talk.google.com
[email protected]
secret=SECRETGOESHERE
priority=25
port=5222
usetls=yes
usesasl=yes
status=available
statusmessage=Asterisk Instance - Google Talk - VoIP
timeout=5