We have a CenturyLink IQ SIP trunk as well, and an efax system set up to our
CUCM over SIP trunk, and then CUCM handles the signaling to the gateway.
I didn’t set it up originally so I don’t know what pains we had with it, but we
do have a slightly altered version of the below line in our gateway config
under both voip service voip and the some of the inbound and outbound dial
peers:
“fax protocol t38 version 0 ls-redundancy 0 hs-redundancy 0 fallback
pass-through g711ulaw”
It works well enough, but we do have some periodic but common fax issues still.
But I think that’s more of a carrier issue than our side, and we pump out way
more faxes in a day than most companies.
Ben Amick
Unified Communications Analyst
From: cisco-voip [mailto:[email protected]] On Behalf Of
'Jonatan Quezada'
Sent: Thursday, January 11, 2018 2:50 PM
To: [email protected]
Subject: [cisco-voip] Cube configuration for CenturyLink Sip Trunk
Hola Cisco Ninjas,
We cut over to a CenturyLink IQ private SIP trunk, and we are seeing that
FAXing is not functional like before. Part of the reason we feel is that the
ATA and the fax devices location are the older ones, they are ATA186, I have
tried
The provider says they do passthrough, but we can only receive. We developed a
workaround with a seperate routeList, and Group to use the T1's we migrated
from.
Has anyone successfully configured Fax with centuryLinkSip Trunk?
The TAC team mentioned that I should use this command in the dial peers
fax protocol t38 nse ls-redundancy 0 hs-redundancy 0 fallback pass-through
g711u’.
before I mess with my dial peers I want to see if there are field tested
methods that have been successful.
What is the difference between configuring FAX globally on the voice service
VoIP area of the configuration vs the dial peer side. I already have the above
command configured globally. and fax is still receive only. I cant send out
over the trunk. thoughts concerns? ideas greatly appreciated
Johnny Q
Voice Technology Analyst - TelNet
Chemeketa Community College
[email protected]<mailto:[email protected]>
Building 22 Room 131
Work 5033995294
Mobile 9712182110
SIP 5035406686
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