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Unity IP Fax

I am trying to implement an IP Fax solution so the subscribers can receive faxes directly on their inbox, I read that it was only possible by installing a Fax server to accomplish this task, however I found out the application called IP Fax, my question is, is it possible to use the IP fax solution with the DiD that my subscribers have assigned so they can use the same number for the VM and Fax and if this is possible, how do I have to configure the MMOIP dial peer and how does the unity determine when the call will end up in a VM or in a Fax message.

Thanks.

9 REPLIES
New Member

Re: Unity IP Fax

Hi Carlos,

I have the same issue and i was wondering whether you found a solution for this. I remember seeing somewhere in cisco.com that it is not supported (don't take my word on this).

If you found a solution for this please share it with me.

Regards,

George Georgiou

Re: Unity IP Fax

Hi George,

Unfortunately I wasn't able to configure the IP Fax the way I wanted, I also contacted the TAC but the only thing we were able to set up was a feature for sending out faxes from an exchange account, however when we try to receive a fax from the pstn using unity, it didn't work and as per Cisco's words, it was not supported, if you want the configuration we used with the IP Fax for sending faxes then let me know.

Regards,

Carlos.

New Member

Re: Unity IP Fax

Hi Carlos,

Thanks for your response. Incoming fax works to specific extension. I am looking over this url recommended by Partner Help:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide_chapter09186a00800b5dc4.html

The router needs to detect that the call is a fax and then forward it to the exchange.

Please post the config just for reference.

Can you also give the case #?

Thanks,

./G

P.S: I will test fax detect and let u know

Re: Unity IP Fax

fax send transmitting-subscriber $s$

fax send left-header $a$

fax send center-header Test T37

fax send right-header $d$

fax send coverpage enable

fax send coverpage show-detail

fax send coverpage comment This is the coverpage for testing t37

fax interface-type fax-mail

mta send server 10.255.255.131 port 25

mta send subject Mensaje de Fax

mta send with-subject both

mta send mail-from hostname GW-2852-VOZ.grupofrisa.com

mta send mail-from username fax-mail

mta receive aliases 172.20.114.240

mta receive maximum-recipients 15

mta receive generate mdn

!

application

service offramp flash:app_faxmail_offramp.2.0.1.1.tcl

!

!

!

crypto pki trustpoint TP-self-signed-2880248375

enrollment selfsigned

subject-name cn=IOS-Self-Signed-Certificate-2880248375

revocation-check none

rsakeypair TP-self-signed-2880248375

!

!

controller E1 0/0/0

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 1

country telmex

category 2

answer-signal group-b 1

groupa-callerid-end

description E1 Avantel 1

!

controller E1 0/0/1

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 1

country telmex

category 2

answer-signal group-b 1

groupa-callerid-end

description E1 Avantel 2

!

controller E1 0/1/0

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 1

country telmex

category 2

answer-signal group-b 1

groupa-callerid-end

trunk-group FRISA

description E1 Axtel 1

!

controller E1 0/2/0

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 1

country telmex

category 2

answer-signal group-b 1

groupa-callerid-end

trunk-group FRISA

description E1 Axtel 2

!

controller E1 0/2/1

framing NO-CRC4

ds0-group 1 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 1

country telmex

category 2

answer-signal group-b 1

groupa-callerid-end

trunk-group FRISA

description E1 Axtel 3

!

!

!

interface GigabitEthernet0/0

description $ETH-LAN$$ETH-SW-LAUNCH$$INTF-INFO-GE 0/0$

ip address 172.20.114.240 255.255.255.0

duplex auto

speed auto

h323-gateway voip interface

h323-gateway voip id GateKeeper-2801 ipaddr 172.20.114.241 1718

h323-gateway voip h323-id GW-2851-VOZ@grupofrisa.com

h323-gateway voip tech-prefix 1#

!

!

dial-peer voice 1111 mmoip

service fax_on_vfc_onramp_app out-bound

destination-pattern 1114

information-type fax

session target mailto:faxserver@grupofrisa.com

!

dial-peer voice 1112 mmoip

service offramp

information-type fax

incoming called-number 2263

!

dial-peer voice 1113 pots

destination-pattern 3333.T

port 0/2/1:1

!

Also, I haven't heard about the call detection, probably this is why my configuration didn't work, I'll give it a try, probably it works only with one subscriber, main issue here is that my customer wants to have all the subscribers with their DiD's working this way (Fax and Phone).

The case number is 605675651.

Regards,

Carlos.

P.S. If your test is successful I'd appreciate to know how did you configure it.

New Member

Re: Unity IP Fax

Hi Carlos,

I have managed to get this work!

A fax detection tcl script must be configured on the incoming matching pots (pstn) dial-peer. There are four modes for detecting fax, either by CNG (gateway waits for 9 seconds for the appropriate tone fax/voice) and/or DTMF (through IVR prompt).

FYI:

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide_chapter09186a00800b5dc4.html

http://www.cisco.com/en/US/products/sw/iosswrel/ps1839/products_feature_guide_chapter09186a00800b5dc4.html#wp1082248

There are several advantages/disadvantages over each mode discussed above.

The good thing is that it is doable but I expect some false positives on fax detection especially with faxes before 1995 or delayed dialtone detection.

This is not a very convenient way of doing this but is the only way :). I am waiting for cisco if this is supported officially

./G

Re: Unity IP Fax

Hi George,

Thanks for the information, I will give it a try on Friday and will let you know the results.

Once again thanks :)

Re: Unity IP Fax

Here is a working example.

a. Enable DNS resolution:

ip domain-lookup

ip name-server

ip domain-name gateway.com (domain of gateway)

b. Enable T37:

fax interface-type fax-mail - (reload the router)

c. Enable T37 Onramp: (Think of Onramp as coming ON to the network)

mta send server unity40.iptel.com port 25 - (mail server - unity in this case)

mta send with-subject both - (sends ani and dnis in subject)

mta send mail-from hostname pstnsw.gateway.com - (Mail from hostname)

mta send mail-from username $s$

mta send return-receipt-to hostname pstnsw.gateway.com - (NDR from hostname)

mta send return-receipt-to username $s$

!

d. Define TCL scripts/Application/peers for Onramp

application

service onramp flash:app_faxmail_onramp.2.0.1.3.tcl

dial-peer voice 203 pots

service onramp

incoming called-number 16285253800

direct-inward-dial

!

dial-peer voice 204 mmoip

service fax_on_vfc_onramp_app out-bound

destination-pattern 16285253800

information-type fax

session target mailto:ifax@iptel.com - This should be the Inbound Fax mailbox that Unity monitors.

e. Enable T37 Offramp: (Think of Offramp as going OFF the network)

mta receive aliases pstnsw.gateway.com - (receiving alias name)

mta receive maximum-recipients 10 - (default is 0, set this to something greater than 0)

mta receive generate permanent-error

!

f. Define TCL scripts/Application/peers for Offramp

application

service offramp flash:app_faxmail_offramp.2.0.1.1.tcl

dial-peer voice 201 pots

destination-pattern 1274255100.

port 1/0/0:23

forward-digits 10

!

dial-peer voice 202 mmoip

description Offramp inbound from Unity

service offramp

information-type fax

incoming called-number 1274255100.

dsn delayed

dsn success

dsn failure

New Member

Re: Unity IP Fax

Thanks for your response. I have the same config

but the smtp server points to the exchange server. Also my question is whether we can have each user extension to receive fax in its mbox using the same extension as his phone.

./G

New Member

Re: Unity IP Fax

What would cause only the first page of a multi page inbound fax to show up in a persons mailbox?

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