Managed by the FaxBack Support Team

Routing Inbound Faxes

When the fax server receives a fax, it stores it in the Inbox (Receive Queue). From there it will be routed to clients based on information received with the fax such as which physical fax port it was received on (line routing) or the dialed phone number (DID routing).
Additional operations on faxes such as Exporting them or Autoprinting them are not truly “routing” and so have different mechanisms to indicate which faxes should be Exported or Autoprinted .
All Routing information is stored in the User or Group configuration, accessible from the Administration program’s User Administration section. See Managing Users and Groups for more information.
In order for the fax server to automatically route there must be enough information when the fax is received to uniquely identify a single user or a single group. For example, this means you can only assign a single phone number to one user or to one group.
Line Sharing: Sharing phone lines between NET SatisFAXtion and another device is not supported. Line sharing can cause numerous problems including garbled or incomplete faxes, failed fax transmissions and lost or misdirected faxes.

Routing Methods

Not all fax devices can perform all methods of routing. Be sure to check the capabilities of your device.

Manual Routing

Manual routing is the simplest form of routing, and is only used when there isn’t enough information to route to a unique user or group. With manual routing, the only way faxes get delivered to users is when a Router or Supervisor level user uses the Administration program to view each fax, make a decision about who it should go to, and forwards the fax to a user or group.
To manually forward, run the Administration program and log in. Go to the Inbox (Received Queue) using the View ► Inbox menu. You will see a list of unrouted faxes. Double-click on one of the faxes and you will see the first page of the fax in the bottom pane. Note that if you are logging in as a Router level user, you will only be able to see the first page. Once you have made a decision who to route the fax to, right-click on it and click Forward. A window will open listing all groups and users. Select the group or user to route the fax to (multiple users can be selected by holding down the Control key). Click Forward. The fax will leave the Inbox. Repeat this process until the Inbox is empty, and be sure to check the Inbox frequently to route any new faxes that are received.

Line Routing

Note that line routing is only possible using Brooktrout analog boards, Mainpine analog boards and Class 1/Class 2 modems. It is not used with PRI/T1 or VoIP fax devices. AudioCodes MediaPacks can emulate line routing with DID numbers per port. See AudioCodes MediaPack MP114 / MP118 for details.
Line routing is used when each physical phone line attached to your fax hardware has a unique phone number. When a fax is received, it is immediately routed to the associated user or group. A user can only be assigned a single phone line, but groups can be assigned multiples.
Since NET SatisFAXtion can’t know which phone number belongs to which port, assigning phone lines can be tricky. The fax server will show you the names of the fax ports, not the phone number of the line that’s plugged in. These names come from the modem and so may not even be in the same order as the physical jacks on the card. The easiest way to determine which phone line corresponds to which port name is by sending in a fax: when the fax is received, look in the Administration program Inbox and scroll over to the Port column. That is the name of the port the fax was received on.
To line 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 Line box, select the line(s) you wish to route to this user or group. Click OK. Note that if the line is already assigned to a different user or group it will not show up in the list.

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.

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.
Strip Digits from Front or Back of DID
With some PBXs or VoIP systems, there are more digits provided in the DID than are desired.
When using AudioCodes equipment, see Protocol Configuration ► Manipulation Tables in the web interface of the AudioCodes device.
To strip a fixed length of digits from the front (left) of a number, set the following registry key. Note that in Administration and Reports the full string will still be visible, but this many digits will be ignored for routing purposes.
[HKEY_LOCAL_MACHINE\SOFTWARE\FaxBack\CASDrive]
"DtmfRouteStripCount" = <NumberToStrip>
To strip digits from the end (right) of a number, configure the number of DTMF digits collected to be less than the full digit string being sent from the PBX.
CSID Routing
Prone to failure.
Disabled by default. To enable:
[HKLM\Software\FaxBack\CasDrive]
"RouteOnCsid" = "1"

Caller ID / ANI Routing

Prone to failure.
Disabled by default. To enable:
[HKLM\Software\FaxBack\CasDrive]
"RouteOnAniCallerId" = "1"

T.30 Subaddress Routing

The T.30 fax specification allows an additional identifier to be specified by the sender for routing purposes. This feature was never widely implemented when it was first introduced, and is almost never implemented today.
Disabled by default. To enable:
[HKLM\Software\FaxBack\CasDrive]
"RouteOnT30SubAddress" = "1"
"SubAddressSeparator" = "#"
Subaddress is transmitted via a T.30 HDLC SUB frame, 20 characters in length. The allowed chars for SUB are numbers, space, *, and #”.

Inbound Routing Capabilities By Device

AudioCodes MediaPack, Mediant, and TrunkPack

AudioCodes MediaPacks (FXO ports) are capable of routing on Line or DTMF.
AudioCodes MediaPacks (FXS ports) are DID Trunk capable, and can route on DNIS.
AudioCodes TrunkPack (TP260) cards, Mediant 1000s with T1/PRI cards, Mediant 2000 and 3000 gateways are capable of routing on DNIS. No additional configuration is necessary.

Emulating Line Routing

The standard configuration NET SatisFAXtion applies enables line routing through the use of virtual phone numbers. The DID number NET SatisFAXtion receives will indicate on which port the MediaPack or Mediant received the fax. To use these line phone numbers, follow the instructions for DID routing above, and use the port phone numbers given below.
The phone numbers on AudioCodes MediaPack MP114 and MP118s default to the following:
Port 1: 1000
Port 2: 1001
Port 3: 1002
Port 4: 1003
Port 5: 1004
Port 6: 1005
Port 7: 1006
Port 8: 1007
The phone numbers typically configured on a Mediant 1000 are slightly different. Note that Mediant 1000s often have customized configuration and so the following does not necessarily reflect your Mediant’s configuration.
Module 1 Port 1: 1000
Module 1 Port 2: 1001
Module 1 Port 3: 1002
Module 1 Port 4: 1003
Module 2 Port 1: 2000
Module 2 Port 2: 2001
Module 2 Port 3: 2002
Module 2 Port 4: 2003
Module 3 Port 1: 3001
etc...

Brooktrout Fax Cards

Any Brooktrout analog (loopstart) fax card is capable of routing on Line or DTMF. These cards must use DTMF Setup to enable DTMF digit capture on these cards.
Any Brooktrout DID fax card is capable of routing on DNIS. No additional configuration is necessary.
Brooktrout T1/PRI cards are capable of routing on DNIS. No additional configuration is necessary.

Eicon Diva Server

Eicon Diva Servers are capable of routing on DNIS from the T1 or PRI.

MainPine RockForce / IQ Express

Any MainPine analog fax card is capable of routing on Line or DTMF. These cards must use DTMF Setup to enable DTMF digit capture on these cards.

Any T1 or PRI Equipment / Any Other VoIP Equipment

DNIS is normally captured and can be used to route faxes. No additional configuration is necessary.

Refusing Unrouted Faxes

If you only route to individual users and not to groups, it is possible to have the fax server reject calls to unassigned DIDs. When a call comes in, the DID is examined to see if it is assigned to any user (not group) on the system. If so it is answered, if not it is rejected as busy.
[HKEY_LOCAL_MACHINE\SOFTWARE\FaxBack\CASDrive]
"RefuseUnroutedCalls" = "1"

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