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T.37 onramp Fax problems

gilbera
Level 1
Level 1

Hi

I have setup T.37 fax on a cisco 2651xm with a AIM-30 most faxes seems to come through fine but high graphic ones or pages with allot of dark detail seem to come through all screwed up or even missing the bottom half of the page.

The strage thing is this might happen to page one but page two which has just text on it will come through ok so the connection is not dropping after the bad page.

Can anyone please help, as i have given up with ATA boxes and we need a working fax solution without the expense of VG200...

Andy

3 Replies 3

teodorgeorgiev
Level 4
Level 4

put "image resolution super-fine" in your mmoip dial-peer and try again. This works for me pretty well on a 5350.

If it does not work, post your config.

That did not work, here is my config.. Thanks Andy

!

hostname gateway

!

boot-start-marker

boot system flash flash:c2600-ipvoice-mz.123-11.T5.bin

boot-end-marker

!

logging buffered 20000 informational

!

!

memory-size iomem 10

clock timezone GMT 0

clock summer-time BST recurring last Sat Mar 23:59 last Sat Oct 23:59

no network-clock-participate wic 0

!

voice-card 0

dspfarm

no local-bypass

!

ip subnet-zero

ip cef

!

!

!

!

no ip domain lookup

ip domain name asp.node4.co.uk

ip host n4-tftp 10.200.1.20

ip host N4-RAD-01 10.2.0.11

ip name-server 10.0.1.1

no ftp-server write-enable

isdn switch-type primary-net5

!

!

voice call convert-discpi-to-prog

voice call carrier capacity active

voice rtp send-recv

!

voice service voip

fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco

!

!

voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g729r8

!

!

!

voice class h323 1

h225 timeout tcp establish 1

!

!

!

!

!

!

!

ccm-manager music-on-hold

fax receive called-subscriber 01158514999

fax interface-type fax-mail

mta send server 10.0.1.17 port 25

mta send subject Fax from Node4 VGW-02

mta send with-subject both

mta send postmaster fax@node4.co.uk

mta send mail-from hostname node4.co.uk

mta send mail-from username $s$

mta send return-receipt-to hostname node4.co.uk

mta send return-receipt-to username $s$

mta receive generate mdn

!

!

controller E1 0/0

pri-group timeslots 1-31

description *** 31-Channels - ***

!

translation-rule 1

Rule 0 . 90

!

!

translation-rule 3

Rule 0 . 90

!

gw-accounting aaa

!

!

!

!

interface FastEthernet0/0

description *** 100Mbs Link to GE6/12 VLAN51 ***

ip address 10.0.2.21 255.255.255.0

ip access-group 100 in

speed 100

full-duplex

h323-gateway voip bind srcaddr 10.0.2.21

!

interface Serial0/0:15

no ip address

isdn switch-type primary-net5

isdn incoming-voice modem

no cdp enable

!

interface FastEthernet0/1

description *** not in use ****

no ip address

shutdown

duplex auto

speed auto

!

ip classless

ip route 0.0.0.0 0.0.0.0 10.0.2.254

!

ip http server

!

!

control-plane

!

!

call application voice onramp flash:app_faxmail_onramp.2.0.1.3.tcl

!

!

voice-port 0/0:15

cptone GB

!

no mgcp timer receive-rtcp

!

!

!

dial-peer voice 10 pots

destination-pattern 9T

progress_ind alert enable 8

progress_ind progress enable 8

progress_ind connect enable 8

fax rate disable

direct-inward-dial

port 0/0:15

!

dial-peer voice 2 voip

preference 1

destination-pattern [1-8].........

progress_ind setup enable 3

translate-outgoing calling 1

translate-outgoing called 3

modem passthrough nse codec g711ulaw

voice-class codec 1

voice-class h323 1

session target ipv4:10.0.2.2

dtmf-relay h245-alphanumeric

expect-factor 5

no vad

!

dial-peer voice 3 voip

preference 2

destination-pattern [1-8].........

progress_ind setup enable 3

translate-outgoing calling 1

translate-outgoing called 3

modem passthrough nse codec g711ulaw

voice-class codec 1

voice-class h323 1

session target ipv4:10.0.2.1

dtmf-relay h245-alphanumeric

expect-factor 5

no vad

!

dial-peer voice 1 mmoip

application fax_on_vfc_onramp_app out-bound

destination-pattern 1158514999

information-type fax

session target mailto:$d$@node4.co.uk

image resolution fine

!

dial-peer voice 1158514999 pots

application onramp

incoming called-number 1158514999

direct-inward-dial

!

end

Maybe the issue is not in the T.37 fax-to-mail (TIFF) conversion, but with the faxes at all. Try to send a fax from a fax machine to a fax machine via VoIP. If the quality is bad, try this command under the voip dial-peer:

fax-relay ECM disable