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2 – Server Administration NET SatisFAXtion 8.6 Manual 47
2.5.1.3
DID / DTMF / DNIS Routing
The most flexible routing method is based on the dialed number. This is the
actual number that the sender dialed, which gets relayed through the phone
system to the fax server. This means that each user and group in the system
can have its own individual phone number if you choose. Depending on the
telephony technology used the called number has a variety of names. This
manual calls this number a Direct Inward Dial number (DID number). When
using a T1/PRI or VoIP provider, Dialed Number Identification System (DNIS) is
often used.
T1, PRI and VoIP providers will usually deliver DNIS digits with no additional
configuration needed in NET SatisFAXtion. Analog devices on the other hand
must use DTMF relay which need configuration on both ends of the phone line,
on the PBX / telco side as well as the NET SatisFAXtion side. See the DTMF
heading below.
To DID route, run the Administration program and log in. Go to the User
Administration section using the View ► User Administration menu. Select the
user or group you wish to route to, right-click on it and select Modify User or
Modify Group. Change to the Routing tab. In the Identifier box, enter the digit
string you wish to route to this user or group. In order to route, the Identifier
string must match exactly. If you are getting four digits from a PBX, enter those
exact four digits. If you are getting ten digits from a PRI, enter those exact ten
digits.
When troubleshooting DID routing, remember that any fax that is not routed will
be sent to the Postmaster user. Check there, and look for the DID column, that
will show the exact digits NET SatisFAXtion received. If that column is blank,
then no DID digits were received.
2.5.1.3.1 DTMF
DTMF routing is used when the fax server’s analog fax device phone lines are
connected to a PBX, and the PBX is capable of generating DTMF tones.
DTMF (Dual Tone Multi Frequency) tones are also called touch tones. They are
the same tones that are used to dial the destination phone number when you
call out on an analog telephone. Only in this case, they are generated by a PBX
to relay to the fax server what the called number is, to allow DID routing.
With standard analog phone lines it is not possible to tell what number the
caller dialed. Therefore some other mechanism must be employed to
communicate that called number to the fax server. In this case, when the fax
server answers a call it listens for a few seconds for DTMF tones. These tones
are usually generated at that point by a PBX.
By default, a modem will not collect DTMF tones from the PBX. It is necessary to
run the DTMF Setup program to enable them to collect digits.
DTMF routing is not the same as DID, CallerID or ANI. While DID numbers can be
routed from your phone switch, PBX or CO, they must be translated into DTMF
tones that are passed to the modem when it answers. To test that DTMF is
available on the line, connect an analog telephone to one of the phone lines
that will be used for the fax server. Call a DID number. When that phone rings,
answer it and listen for DTMF tones to be played back. If you do not hear the
DTMF tones, work with your phone switch or phone vendor to get this working
first.