Kann mir jemand helfen die Codecs zu konfigurieren?

*CLI> Sep 18 15:58:38 WARNING[98310]: chan_sip.c:2752 process_sdp: No compatible codecs!
Sep 18 15:58:39 WARNING[98310]: channel.c:270 ast_best_codec: Don't know any of 0x0 formats
Sep 18 15:58:39 WARNING[98310]: channel.c:270 ast_best_codec: Don't know any of 0x0 formats
    -- Executing Dial("SIP/5060-08130fb0", "Zap/2/1234|60|tT") in new stack
Sep 18 15:58:39 WARNING[213005]: channel.c:1838 ast_request: No translator path exists for channel type Zap (native 76) to 0
Sep 18 15:58:39 NOTICE[213005]: app_dial.c:727 dial_exec: Unable to create channel of type 'Zap'
  == Everyone is busy/congested at this time

[general]
context=default                 ; Default context for incoming calls
port=5060                       ; UDP Port to bind to (SIP standard port is 5060)
bindaddr=0.0.0.0                ; IP address to bind to (0.0.0.0 binds to all)
srvlookup=yes                   ; Enable DNS SRV lookups on outbound calls
tos=0x18                        ; Set IP QoS to either a keyword or numeric val
disallow=all                    ; First disallow all codecs
allow=g711a
canreinvite=no
insecure=very
dtmf=rfc2833
register => 4317:[email protected]/4317
register => 71503:[email protected]/71503

[sipgate]
type=friend
username=4317
secret=XXXXXXX
host=sipgate.de
fromuser=4317946
fromdomain=sipgate.de
context=default
canreinvite=no
qualify=yes
disallow=all
allow=g711a
insecure=very
nat=no
dtmf=rfc2833
tos=0x18
mailbox=9999

[econophone]
type=friend
username=71503
secret=XXXXXXXX
host=sip.econophone.de
fromuser=71503
fromdomain=sip.econophone.de
context=default
canreinvite=no
qualify=yes
disallow=all
allow=g711a
insecure=very
nat=no
dtmf=rfc2833
tos=0x18
mailbox=8888

[general]
static=yes
writeprotect=no

[globals]
IAXINFO=guest                                   ; IAXtel username/password

[default]
include => calls

[calls]
;exten => 4317,1,Voicemail2(u9999)
;exten => 4317,1,Goto(voicemenu,s,1)
exten => 71503,1,Dial(Zap/2/1234,60,tT)
exten => 4317,1,Dial(Zap/2/1234,60,tT)
exten => 4317,2,Hangup

exten => _8.,1,Dial(SIP/${EXTEN:1}@sipgate,60,tT)
exten => _8.,2,Congestion
exten => _8.,3,Busy
exten => _8.,4,Hangup

[voicemenu]
exten => s,1,Background(vm-sorry)
exten => s,2,Goto(voicemenu,s,1)

*CLI> Sep 18 17:06:52 WARNING[98310]: chan_sip.c:2752 process_sdp: No compatible codecs!
    -- Executing Dial("SIP/5060-08131018", "Zap/2/1234|60|tT") in new stack
    -- Called 2/1234
  == Primary D-Channel on span 1 up for TEI 64
    -- Zap/2-1 is ringing
    -- Hungup 'Zap/2-1'

Capabilities: us - 0xc(ULAW|ALAW), peer - audio=0x8(ALAW)/video=0x0(EMPTY), combined - 0x8(ALAW)
Non-codec capabilities: us - 0x1(G723), peer - 0x1(G723), combined - 0x1(G723)

[general]
context=default                 ; Default context for incoming calls
port=5060                       ; UDP Port to bind to (SIP standard port is 5060)
bindaddr=0.0.0.0                ; IP address to bind to (0.0.0.0 binds to all)
srvlookup=yes                   ; Enable DNS SRV lookups on outbound calls
tos=0x18                        ; Set IP QoS to either a keyword or numeric val
disallow=all                    ; First disallow all codecs
;allow=g711a
canreinvite=no
insecure=very
dtmf=rfc2833
register => 4317:[email protected]/4317
register => 71503:[email protected]/71503

[sipgate]
type=friend
username=4317
secret=XXXXXX
host=sipgate.de
fromuser=4317
fromdomain=sipgate.de
context=default
canreinvite=no
qualify=yes
disallow=all
;allow=ulaw
allow=alaw
allow=g711
insecure=very
nat=no
dtmf=rfc2833
tos=0x18
mailbox=9999

[econophone]
type=friend
username=71503
secret=XXXXXXX
host=sip.econophone.ch
fromuser=715034023
fromdomain=sip.econophone.ch
context=default
canreinvite=no
qualify=yes
disallow=all
;allow=ulaw
allow=alaw
insecure=very
nat=no
dtmf=rfc2833
tos=0x18
mailbox=8888