11-25-2005 06:57 AM - edited 03-13-2019 11:22 AM
Hi,
We have some ATA's running with callmanager. Sometimes incoming faxes are not fully completed.
We receive most of the time just a half page.
Sending : same problem
Audio mode is already on 12 for the fax port.
any suggestions? (latest ATA firmware allready installed.)
greetz
11-25-2005 03:05 PM
More information would be helpful.
What model ATA? L1 or L2?
Are the calls through a gateway to the PSTN? If so, what type of gateway? PRI or FXO, or? H323 or MGCP?
Post your gateway config if applicable.
Are the fax machines set for G3 only, or are they attempting Super G3?
11-27-2005 02:07 PM
Hi,
We have ATA186 L2, calls come through a ISDN/BRI interface on a cisco 2801 H323 gateway.
Fax is kinda old so only G3 I think.
Sometimes it happends a fax fully comes in, but most of the time it receive just a halve page.
Config of the voice gateway, I left some unneeded parts out.
network-clock-participate wic 3
network-clock-select 1 BRI0/3/0
network-clock-select 2 BRI0/3/1
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
no aaa new-model
ip subnet-zero
ip cef
!
!
no ip domain lookup
no ftp-server write-enable
isdn switch-type basic-net3
!
voice-card 0
!
!
!
voice service voip
modem passthrough nse codec g711alaw
!
!
voice class codec 99
codec preference 1 g711alaw
codec preference 2 g729br8
codec preference 3 g729r8
!
class-map match-all CM_CoS3
match dscp af31
class-map match-all CM_QOS
match dscp ef
!
!
policy-map QOS
description ***map dscp to cos***
class CM_QOS
set cos 5
class CM_CoS3
set cos 3
!
!
interface FastEthernet0/0
no ip address
duplex auto
speed auto
!
interface FastEthernet0/0.1
encapsulation dot1Q 200
ip address 10.20.20.254 255.255.255.0
service-policy output QOS
h323-gateway voip interface
h323-gateway voip bind srcaddr 10.20.20.254
!
interface FastEthernet0/1
no ip address
shutdown
duplex auto
speed auto
!
interface BRI0/3/0
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn global-disconnect
!
interface BRI0/3/1
no ip address
isdn switch-type basic-net3
isdn point-to-point-setup
isdn incoming-voice voice
isdn global-disconnect
!
ip classless
ip route 0.0.0.0 0.0.0.0 10.20.20.250
!
voice-port 0/3/0
translate calling 10
compand-type a-law
cptone NL
timeouts interdigit 3
!
voice-port 0/3/1
translate calling 10
compand-type a-law
cptone NL
timeouts interdigit 3
!
!
!
!
dial-peer voice 100 pots
tone ringback alert-no-PI
destination-pattern 0.T
progress_ind setup enable 3
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
fax rate disable
direct-inward-dial
port 0/3/1
forward-digits all
!
dial-peer voice 500 voip
destination-pattern .T
no modem passthrough
voice-class codec 99
session target ipv4:10.10.0.2
dtmf-relay h245-alphanumeric
fax rate disable
no vad
!
dial-peer voice 1200 pots
tone ringback alert-no-PI
destination-pattern 12..
progress_ind setup enable 3
progress_ind alert enable 8
progress_ind progress enable 8
progress_ind connect enable 8
direct-inward-dial
port 0/3/0
forward-digits all
!
dial-peer voice 501 voip
preference 2
destination-pattern .T
no modem passthrough
voice-class codec 99
session target ipv4:10.10.0.1
dtmf-relay h245-alphanumeric
fax rate disable
no vad
!!
!
dial-peer voice 101 pots
tone ringback alert-no-PI
destination-pattern 0.T
direct-inward-dial
port 0/3/0
forward-digits all
!
!
call-manager-fallback
max-conferences 4
ip source-address 10.20.20.254 port 2000
max-ephones 24
max-dn 48
default-destination 7210
translate called 20
11-28-2005 09:16 AM
Try adding fax protocol pass-through g711alaw to your VOIP dial peers.
Are you in Europe? If US you should be using g711ulaw.
11-30-2005 01:34 AM
Yes, I'am in Europe.
Gonna add this command later this day and run some tests.
12-02-2005 02:48 AM
Hi,
The problem you are facing is due the fact that the ATA analog-ports work only upto 9600 and if the two faxes negociate a higher speed between them, then the ATA ports cannot keep up and you either miss pages or you get half pages.
Try forcing your fax machine to use speeds >=9600.
Regards,
Christos
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