Can't Fax Local; Can Call

Unanswered Question
Jan 27th, 2009
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We have a problem at one of our customer sites where they can call locally, but not fax. The faxes are connected directly to the gateway via FXS ports, and the PRI is connected in the same gateway. It is h.323 and we have all the dialpeer statments we need. We can also call out using a phone, but not using a fax. Running a debug ( dialpeer debug and isdn q931 debug) we get this we they take a fax off hook:


PRI_2811#

*Jan 27 19:55:07.497: //-1/xxxxxxxxxxxx/DPM/dpAssociateIncomingPeerCore: Match Rule=DP_MATCH_PORT;


And then nothing. They dial 6 digits, then they hear a busy signal.


Any ideas on what could be causing this?

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Ayodeji Okanlawon Tue, 01/27/2009 - 14:09
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    2017 IP Telephony

Hi,


Can you call the fax number from any phone in your system.



Nicholas Matthews Tue, 01/27/2009 - 14:32
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When you go offhook and dial numbers with an analog phone and offhook with a fax machine, there should be 0 difference.


Can you try a normal voice call with the fax machine? Most allow this.


Something else is going on.



hth,

nick

CleverDrake Wed, 01/28/2009 - 05:59
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I am sorry, I was unclear before. We can dial local with VOIP phones, but not the faxes. They do not have an analog handset, and I know that that would be the best test. I just wanted to make sure that the config was correct and that this should work. The number they are calling is: 419-542-XXXX.


Here is the dialpeer config:


!

dial-peer voice 1 voip

description Voip dial peer for incoming calls to Subscriber 2

destination-pattern [5678]...

voice-class h323 5

session target ipv4:SUB2

incoming called-number .

dtmf-relay h245-alphanumeric

codec g711ulaw

no vad

!

dial-peer voice 2 voip

description VoIP dial peer for incoming calls to Subscriber

destination-pattern [5678]...

voice-class h323 5

session target ipv4:SUB

incoming called-number .

dtmf-relay h245-alphanumeric

codec g711ulaw

no vad

!

dial-peer voice 3 voip

description VoIP dial peer for incoming calls to Publisher

preference 1

destination-pattern [5678]...

voice-class h323 5

session target ipv4: PUB

incoming called-number .

dtmf-relay h245-alphanumeric

codec g711ulaw

no vad

!

dial-peer voice 911 pots

description Emergency 911 calls

destination-pattern [9]11

port 0/0/0:23

forward-digits all

!

dial-peer voice 10 pots

description Long distance dialing

destination-pattern 1[2-9]..[2-9]......

port 0/0/0:23

forward-digits all

!

dial-peer voice 8911 pots

description Emergency 911 calls

destination-pattern [8]911

port 0/0/0:23

forward-digits 3

!

dial-peer voice 11 pots

description Local 10 digit dialing

destination-pattern [2-9]..[2-9]......

port 0/0/0:23

forward-digits all

!

dial-peer voice 111 pots

description INCOMING DIAL_PEER

translation-profile incoming inbound

incoming called-number .

direct-inward-dial

!

dial-peer voice 419487 pots

description Local Hicksville LEC

destination-pattern 419487....

port 0/0/0:23

forward-digits 10

!

dial-peer voice 419518 pots

description Local Hicksville LEC

destination-pattern 419518....

port 0/0/0:23

forward-digits 10

!

dial-peer voice 419542 pots

description Local Hicksville LEC

destination-pattern 419542....

port 0/0/0:23

forward-digits 10

!

dial-peer voice 419786 pots

description Local Hicksville LEC

destination-pattern 419786....

port 0/0/0:23

forward-digits 10

!

dial-peer voice 419881 pots

description Local Hicksville LEC

destination-pattern 419881....

port 0/0/0:23

forward-digits 10

!

dial-peer voice 567881 pots

description Local Hicksville LEC

destination-pattern 567881....

port 0/0/0:23

forward-digits 10

!

dial-peer voice 12 pots

description FAX 419-542-8534

translation-profile incoming inbound

destination-pattern [8]534

port 0/1/0

!

dial-peer voice 13 pots

description EL/HS Fax 419-542-8711

translation-profile incoming inbound

destination-pattern [8]711

port 0/1/1

!

dial-peer voice 14 pots

description PA System

destination-pattern #99

port 0/1/2

forward-digits 0

!

Ronald Spencer Thu, 02/05/2009 - 11:44
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Most fax machines, though they may not have a handset, will have a hook/flash, speaker, or other monitor button (such that you could monitor the line).

CleverDrake Thu, 02/05/2009 - 11:52
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Actually, we found the issue. We had a translation rule, and it was applied to the fax dial peers. Once we removed this (since we didn't need it on that dialpeer) everything worked fine.

Ronald Spencer Thu, 02/05/2009 - 12:15
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I know this may sound odd, but have you checked line and ring voltage coming out of the FXS port? We have had significant problems in our organization with fax and other modem devices. What we discovered was a problem with line voltage. This was most often seen coming of the VG248, but we did we it on FXS ports as well. If you don't have a volt meter, I us a PE830 from Tempo which is a ButtSet and VoltMeter together.

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