[cisco-voip] VG224 issue
Nick Matthews
matthnick at gmail.com
Thu Apr 30 13:38:42 EDT 2009
A few notes to clear some things up:
VG224s are routers with FXS ports. They have the same commands and
support as a 2800 would. Meaning: SIP, SCCP, H323, and MGCP can all
be run on the VG224, and they can all be run simultaneously.
For faxing, we've had a few bugs recently with MGCP T38 ( CSCsy29533 ,
CSCsw39039), but generally you will find wider support for faxing with
MGCP/H323/SIP than you will with SCCP.
SCCP did not support any sort of fax relay until 12.4(11)T, and it
supports Cisco fax relay and NSE based T38 afterwards.
You can also run NSE based modem passthrough with SCCP. Note that all
of these SCCP fax methods use Cisco-proprietary NSEs which will not be
compatible with something like a Rightfax server or another T38
solution.
For the different configuration options, here is the configuration for
reference:
---Fax/Modem Passthrough (NSE)
SIP/H323
dial-peer or voice service voip
modem passthrough nse codec g711u
MGCP
mgcp modem passthrough voip mode nse
mgcp modem passthrough voip codec g711ulaw
SCCP
voice service voip
modem passthrough nse codec g711ulaw
---Fax Pass-through protocol
SIP/H323
dial-peer or voice service voip
fax protocol pass-through g711ulaw
MGCP
N/A
SCCP
N/A
---Cisco Fax Relay (NSE)
SIP/H323
dial-peer v 1 voip
fax protocol cisco (default)
MGCP
ccm-manager fax protocol cisco
mgcp fax t38 inhibit
SCCP
voice service voip
fax protocol cisco (12.4(11)T)
---NSE T.38
SIP/H323
dial-peer voice 1 voip or voice service voip
fax protocol t38 nse ls-redundancy 0 hs-redundancy 0 fallback cisco
MGCP
no mgcp fax t38 inhibit (default)
SCCP
voice service voip
fax protocol t38 nse ls-redundancy 0 hs-redundancy 0 fallback
cisco (12.4(11)T)
---Protocol T.38
SIP/H323
dial-peer voice 1 voip or voice service voip
fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback cisco
MGCP
mgcp package-capability fxr-package
mgcp default-package fxr-package
no mgcp fax t38 inhibit (default)
SCCP
N/A
---Modem Relay NSE
SIP/H323
dial-peer voice 1 voip or voice service voip
modem relay nse codec g711ulaw gw-controlled
no fax-relay sg3-to-g3
MGCP
mgcp modem relay voip mode nse gw-controlled
no mgcp fax-relay sg3-to-g3
SCCP
voice service voip (12.4(4)T)
modem relay nse codec g711ulaw gw-controlled
no fax-relay sg3-to-g3
Hope this clarifies a bit.
-nick
On Thu, Apr 30, 2009 at 8:02 AM, Truelove_John <JTruelove at aetinc.com> wrote:
> We did not run any alarm or fire systems through the VG224, just didn’t seem
> like the right thing to do.
>
> Extended power outage = no ability to dial out for those systems.
>
>
>
> We do have other devices that have modems but they are not having issues,
> older systems running at 9600 or 14.4.
>
>
>
> These are the commands that I remember being important when troubleshooting
> the problems we had (I think, it’s been a while ago):
>
>
>
> voice service voip
>
> modem passthrough nse codec g711ulaw
>
>
>
> no ccm-manager fax protocol cisco
>
> mgcp modem passthrough voip mode nse
>
> mgcp fax t38 ecm
>
> mgcp fax t38 inhibit
>
>
>
> John
>
>
>
>
>
> From: Melvin Fong [mailto:mfong at pacific.edu]
> Sent: Wednesday, April 29, 2009 5:37 PM
> To: Truelove_John; Matthew Loraditch; Scott Kee; Chris Clouse; Paul; STEVEN
> CASPER; Jonathan Charles; Lelio Fulgenzi
> Cc: cisco-voip at puck.nether.net
> Subject: RE: [cisco-voip] VG224 issue
>
>
>
> Did you also experience trouble with modem? We are having issues with ones
> that connect for fire and burglar alarms using Contact ID format.
>
>
>
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Truelove_John
> Sent: Wednesday, April 29, 2009 2:30 PM
> To: Matthew Loraditch; Scott Kee; Chris Clouse; Paul; STEVEN CASPER;
> Jonathan Charles; Lelio Fulgenzi
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] VG224 issue
>
>
>
> I had similar issues with our VG224 to begin with like only receiving 1
> page,
> not connecting to other fax machines, errors in trans/recv of fax.
>
> I had to do the following:
>
> run as pass through on VG224s
> disable ECM on all fax machines
> disable Super G3 on all fax machines
> Set trans/recv. rates to 14.4 or 9600
>
> On remote sites, make sure that they are using G711.
>
> Since I made these changes, we have not had any issues with our fax
> machines.
>
> We run in MGCP mode...no problems.
>
> Hope that helps.
> John
>
>
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net on behalf of Matthew Loraditch
> Sent: Wed 4/29/2009 4:31 PM
> To: Scott Kee; 'Chris Clouse'; 'Paul'; STEVEN CASPER; Jonathan Charles;
> Lelio Fulgenzi
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] VG224 issue
>
> If you can do it change to pass through, I have had massive issues with Rely
> and wherever I can I use passthrough and no issues
>
>
> Matthew Loraditch
> 1965 Greenspring Drive
> Timonium, MD 21093
> support at heliontechnologies.com
> (p) (410) 252-8830
> (F) (443) 541-1593
>
> Visit us at www.heliontechnologies.com
> Support Issue? Email support at heliontechnologies.com for fast assistance!
>
>
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Scott Kee
> Sent: Wednesday, April 29, 2009 4:30 PM
> To: 'Chris Clouse'; 'Paul'; STEVEN CASPER; Jonathan Charles; Lelio Fulgenzi
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] VG224 issue
>
> I am doing fax-relay
>
>
>
> -----Original Message-----
> From: Chris Clouse [mailto:Chris.Clouse at cdw.com]
> Sent: Wednesday, April 29, 2009 3:29 PM
> To: Scott Kee; 'Paul'; STEVEN CASPER; Jonathan Charles; Lelio Fulgenzi
> Cc: cisco-voip at puck.nether.net
> Subject: RE: [cisco-voip] VG224 issue
>
> Are you guys doing fax-relay or fax-passthrough?
>
> ~Chris
>
> -----Original Message-----
> From: cisco-voip-bounces at puck.nether.net
> [mailto:cisco-voip-bounces at puck.nether.net] On Behalf Of Scott Kee
> Sent: Wednesday, April 29, 2009 3:20 PM
> To: 'Paul'; STEVEN CASPER; Jonathan Charles; Lelio Fulgenzi
> Cc: cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] VG224 issue
>
> How about H323?
> I am just having too many issues with MGCP with the fax machines.
>
>
> -----Original Message-----
> From: Paul [mailto:asobihoudai at yahoo.com]
> Sent: Wednesday, April 29, 2009 2:41 PM
> To: STEVEN CASPER; Jonathan Charles; Lelio Fulgenzi
> Cc: Scott Kee; cisco-voip at puck.nether.net
> Subject: Re: [cisco-voip] VG224 issue
>
>
> http://www.cisco.com/en/US/docs/ios/12_4t/12_4t2/ht1vg224.html
>
> http://cisco.com/en/US/docs/ios/voice/fxs/configuration/guide/fxssccpsplmft.html
>
> These two documents should give you plenty of information on how to
> configure the FXS ports to be controlled via Skinny.
>
>
>
>
> ________________________________
> From: STEVEN CASPER <SCASPER at mtb.com>
> To: Jonathan Charles <jonvoip at gmail.com>; Lelio Fulgenzi <lelio at uoguelph.ca>
> Cc: Scott Kee <SKee at cmsstl.com>; cisco-voip at puck.nether.net
> Sent: Wednesday, April 29, 2009 3:10:17 PM
> Subject: Re: [cisco-voip] VG224 issue
>
>
> All of our VG224s are MGCP and we have been experiencing a lot of fax pain
> lately ourselves. When we talked to TAC they told us that MGCP or SCCP makes
> no difference and that we should change all of our fax machines to not use
> Super G and to reduce the speed of the fax machines. In a company of our
> size this is just not going to work.
>
> I am considering changing to SCCP to give it a try. Could someone share a
> sanitized SCCP config for a VG224 and what advantages they think there are
> to using SCCP as opposed to MGCP? Other than it works better :) I am going
> to have to give a couple of technical reasons.
>
> Thanks
> Steve
>
> Please consider the impact on our environment before printing this e-mail.
>
>>>> Lelio Fulgenzi <lelio at uoguelph.ca> 4/27/2009 1:27 PM >>>
>
> I third that opinion. I use SCCP and it was very easy to setup. I think SCCP
> debugs are also more helpful (I could be wrong there).
>
> That being said, we are using modem/fax passthrough and have downgraded our
> FAXes to 14.4/ECC off.
>
> ---
> Lelio Fulgenzi, B.A.
> Senior Analyst (CCS) * University of Guelph * Guelph, Ontario N1G 2W1
> (519) 824-4120 x56354 (519) 767-1060 FAX (JNHN)
> ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> "Bad grammar makes me [sic]" - Tshirt
>
>
> ----- Original Message -----
> From: "Jonathan Charles" <jonvoip at gmail.com>
> To: "Paul" <asobihoudai at yahoo.com>
> Cc: "Scott Kee" <SKee at cmsstl.com>, cisco-voip at puck.nether.net
> Sent: Monday, April 27, 2009 1:16:01 PM GMT -05:00 US/Canada Eastern
> Subject: Re: [cisco-voip] VG224 issue
>
> Oh, wow, it is MGCP... I didn't even see that...
>
> Yeah, ditto, go with SCCP.
>
> J
>
> On Mon, Apr 27, 2009 at 9:24 AM, Paul <asobihoudai at yahoo.com> wrote:
>>
>> Personally, I'd ditch the MGCP and use Skinny for the VG224. I've had a
>> lot more luck and flexibility using Skinny. Make sure you update the IOS on
>> the VG.
>>
>> Paul
>>
>>
>> ----- Original Message ----
>> From: Scott Kee <SKee at cmsstl.com>
>> To: "cisco-voip at puck.nether.net" <cisco-voip at puck.nether.net>
>> Sent: Monday, April 27, 2009 8:58:18 AM
>> Subject: [cisco-voip] VG224 issue
>>
>>
>> I have VG224 with CM 6.1 and using MGCP. I have about 18 fax machines
>> plugged into this Voice Gateway.
>> Sometime early March people started complaining that they weren't
>> receiving faxes from outside.
>> They were hearing fast busy signal when outside people send faxes to the
>> fax machines that were plugged into the VG 224.
>> I reloaded VG 224 and power recycled fax machines but it did not make any
>> difference.
>> I called Cisco TAC and worked on the issue for about 20 hours but did not
>> find any issues.
>> We RMA the router but it did not make any difference. We ended up
>> removing the VG224 gateway from CM and recreated it. That seemed fixed the
>> issues then.
>>
>> This afternoon, I am seeing exact same issues with VG 224. It was working
>> fine till now.
>> I did not make any configuration changes on the VG224...
>> I am going to call Cisco tomorrow morning but I don't know Cisco is going
>> to do this time?
>> Is this CM issue or VG?
>>
>> Does anyone experience this issue?
>>
>> Any help would really appreciated.
>>
>> Thanks,
>>
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>>
>>
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