Outgoing Fax from FXS port on 4224

[josegcantuiii]

I am having many problems getting an outgoing call from a cisco AGS 4224 fxs port (4/0) to any fax machine on the pstn. Incoming faxes and calls can come in just fine.

TAC stated that only code 12.1.5.YE5 will support in/out bound faxes along w/12.2 revision code.. I haven't had any luck w/either of these versions.

Any ideas?

[mschlenger]

Make sure you have codec G.711 configured on your voip dial peers. They default to g.729. Post a config if that does not work.

-Mike

[josegcantuiii]

I am using a voice-class to set the codec. 1st is g711ulaw and second is g729r8.. config below:

2245-47 are phones 2248 is fax, 2249 cpckup

I can recieve faxes fine, just not fax out...

dial-peer voice 2241 voip

description First Call Manager to dial internal numbers (2245-2249)

preference 1

destination-pattern 224[5-9]

progress_ind setup enable 3

voice-class codec 1

voice-class h323 1

session target ipv4:161.137.24.11

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

no vad

!

dial-peer voice 2242 voip

description Second Call Manager to dial internal numbers (2245-2249)

preference 2

destination-pattern 224[5-9]

progress_ind setup enable 3

voice-class codec 1

voice-class h323 1

session target ipv4:161.137.24.10

dtmf-relay h245-alphanumeric

ip qos dscp cs5 media

no vad

voice class codec 1

codec preference 1 g711ulaw

codec preference 2 g729r8

!

voice service voip

h323

modem passthrough nse codec g711ulaw redundancy

!

voice class h323 1

h225 timeout tcp establish 3

!

lukenbach_gw#show run | begin voice-port

voice-port 2/0

input gain -3

output attenuation 0

echo-cancel coverage 32

connection plar 2245

description Lukenbach Main Line # 512-371-7706

!

voice-port 2/1

input gain -3

output attenuation 0

echo-cancel coverage 32

connection plar 2245

description Lukenbach Main Line # 512-371-7707

!

voice-port 3/0

output attenuation 0

!

voice-port 3/1

output attenuation 0

connection plar 2248

description Lukenbach Fax Line # 512-371-7733

!

voice-port 4/0

input gain -3

description Luckenbach Toll Bypas FAX 2248 (512-371-7733)

!

dial-peer voice 2248 pots

description Fax Tollbypass

preference 1

destination-pattern 2248

progress_ind alert enable 8

progress_ind progress enable 8

progress_ind connect enable 8

port 4/0

forward-digits all

!

[mschlenger]

What is happening when you dial out? Does the fax machine answer? Do you get a busy?

If you are getting nothing, I'd look at a "debug voice ccapi inout" to see what digits you are sending. Even though you have forward-all digits configured, you may need to prefix something. Is 2248 your access code to the PSTN? Again, use the debug to determine what digits you are sending out.

[jaiello2000]

It is also possible that the FAX is sending the digits too fast and one or more are missed.

[paul.alvarez]

The only dial-peer VOIPs I see are for extensions 2245 to 2249. What's the number you're dialing from the FAX ?

--Paul

[josegcantuiii]

I am dialing any fax number. For testing i am just calling another fax machine off the pstn. (512-424-4448)

[tboynton]

Just out of curiousity. Has anyone gotten incoming and outgoing faxing to work with MGCP. According to the TAC MGCP is not supported on the 4224 for a couple of months even though you can configure it on the 4224 and CM and every document on CCO says it is supported?

[josegcantuiii]

Yes I recieve the same thing. I did, however, get the fax working in/out bound on the 12.1.5YI even though they stated it would not work. I know it can work manually, unsure w/mgcp... Are you using any other codecs than G711 or wideband? If so ensure that you have the Voice Service Pots statement in there and that you have G711 specified for those faxes...

[tboynton]

No, I'm only running G711. I do have it working fine with H323 but really wanted to use MGCP. I have six ports configured for MGCP and 2 for H323.