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Community Member

T.38 faxing problem vg2911 with h.323 to fax server

We implented a new virtual fax server and it's connected to my VG2911 with an H.323 connection between the fax server and gateway.

Faxes from the east coast are fine but when offices from my west coast offices fax I see the call connect to the fax server but then it gets dropped.

Is there anything specific I can look for?

Thanks,

Mike

6 REPLIES
Hall of Fame Super Silver

T.38 faxing problem vg2911 with h.323 to fax server

Do you have your GW configured for T.38?  Are you using protocol based or NSE based T.38?

Can you post relevant config?

What if you call it do you get fax tones?

Chris

Community Member

T.38 faxing problem vg2911 with h.323 to fax server

!

version 15.0

service timestamps debug datetime localtime

service timestamps log datetime localtime

no service password-encryption

!

!

boot-start-marker

boot-end-marker

!

card type t1 0 0

logging buffered 30000000

no logging console

!

!

!

!

!

!

aaa session-id common

clock timezone EST -5

clock summer-time EST recurring

network-clock-participate wic 0

network-clock-select 1 T1 0/0/0

!        

no ipv6 cef

ip source-route

ip cef

!

!

!

!

ip domain

multilink bundle-name authenticated

!

!

!

!

isdn switch-type primary-ni

!

!

!

voice-card 0

dspfarm

dsp services dspfarm

!

!

!

voice service voip

allow-connections h323 to h323

fax protocol t38 ls-redundancy 2 hs-redundancy 0 fallback none

h323

  no call service stop

  session transport udp

!

voice class h323 1

  h225 timeout tcp establish 3

!

!

!

!

license udi pid CISCO2901/K9

hw-module pvdm 0/0

!

hw-module pvdm 0/1

!

!

!

!

redundancy

!

!

controller T1 0/0/0

cablelength long 0db

pri-group timeslots 1-24

!

controller T1 0/0/1

cablelength long 0db

!

!

!

!

!

interface GigabitEthernet0/0

ip address

duplex auto

speed auto

h323-gateway voip interface

h323-gateway voip bind srcaddr

!

interface GigabitEthernet0/1

no ip address

shutdown

duplex auto

speed auto

!

interface Serial0/0/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-ni

isdn incoming-voice voice

no cdp enable

!

ip forward-protocol nd

!

no ip http server

no ip http secure-server

!

!

control-plane

!

!

voice-port 0/0/0:23

!

!

!

!

dial-peer voice 100 pots

destination-pattern .T

incoming called-number .

direct-inward-dial

port 0/0/0:23

forward-digits all

!

dial-peer voice 103 voip

description ***Main Fax Server***

preference 1

destination-pattern

session target ipv4:

session transport udp

voice-class h323 1

codec g711ulaw

no vad

!

!

gateway

timer receive-rtp 1200

!

!

!

gatekeeper

shutdown

Hall of Fame Super Silver

T.38 faxing problem vg2911 with h.323 to fax server

OK, so you are using protocol based, good.

Why is session target on your voip dial peer blank?  This does not point to anything. You need to point it to your fax server's IP address.

HTH,

Chris

Community Member

T.38 faxing problem vg2911 with h.323 to fax server

I removed them..

I have them in my actual config... I have faxes working but I have problems when faxes come in from the west coast to the east coast. I see the call connect on the VG and connect on the fax server but then it times out and the west coast offices get an erro message  that states "poor line connection"

Hall of Fame Super Silver

T.38 faxing problem vg2911 with h.323 to fax server

Where are the west coast faxes come in to? Are they coming into another GW and then are sent to this one?

Can you post config of that GW as well as "sh controller T1" from both?

Chris

Community Member

T.38 faxing problem vg2911 with h.323 to fax server

My fax server resides in NJ. All faxes come into NJ and then get sent via email. They come directly to this gateway there is nothing inbetween.

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