Incoming VOIP Call Routing
Incoming VOIP Call Routing feature allows you to configure different routes for incoming calls depending on the implementation of some initial conditions. Depending on the Caller Number, Called Number etc., the incoming call can be routed to Windows Fax Service with T.38 support or using only audio fax mode (Fax over G.711 codec). The maximum supported number of Incoming VOIP Call Routing rules is not limited.
There are two types of rules:
The rules of different types highlighted in different colors in the Incoming VOIP Call Routing table.
The incoming calls can be routed to:
The following fax settings can be set or overridden by the Incoming VOIP Call Routing rule:
Fax Voip FSP always checks Incoming VOIP Call Routing rules, starting with the rule # 1. The call will be routed according to the first rule, which satisfies the conditions of the call. All other rules are ignored. If there is no one rule that satisfies the conditions of the call, the call can not be implemented. For example, if rule # 1 applies for all incoming SIP calls ('VOIP Call From' = sip:.*; 'VOIP Call To' = sip:.*), then other rules # 2, # 3, etc. applied to incoming SIP calls never be able to work under any conditions. To be able to receive incoming calls of selected type (SIP or H.323), you must have at least one rule for this type of call in the Incoming VOIP Call Routing table.
If there are no rules in the Incoming VOIP Call Routing table, Fax Voip FSP automatically invites to create default rules for Incoming calls at the time of clicking <Apply> button.
The default rules are as follows:
If the rules of some kind can not be used in the current configuration of the program, Fax Voip FSP does not load them at startup and ignores these rules.
The rules that can not be used in the current configuration of the program are always highlighted in red.
Incoming VOIP Call Routing Table contains the following information:
Rule
Unique number of the current rule.
VOIP Call From
Specifies the format of SIP or H.323 address of remote party for which current rule applies. SIP or H.323 address of the remote party usually has the format like 'prefix:CallerID@sipserver'. In the case of SIP, sip: and tel: prefixes are supported. In the case of H.323, h323: prefix is supported. The first part is the number of the caller, the second part is the name of SIP or H.323 server. For example 'h323:.*' means “H.323 calls from any number and from any H.323 server”, '(sip|tel):.*' means “SIP calls from any number, from any sip network and with any possible prefixes”, 'sip:.*@sip.mynetwork.com' means “calls from any number from sip.mynetwork.com server only”. The biggest problem may occur when you try to specify server part of address here. It is normal that you enter the server name as 'myserver.com', and it works in terms of SIP Registration, but when you have incoming call the name of the same server looks like '@sip.myserver.com:5060'. In this example the construction 'sip:.*@myserver.com' is incorrect and will not work, the correct rule for VOIP Call From should be written as: 'sip:.*@sip.myserver.com:5060'.
VOIP Call To
Specifies the format of called number for which current rule applies. In the case of SIP, sip: and tel: prefixes are supported. In the case of H.323, the standard h323: prefix is added. For example '(sip|tel):.*' means “calls to any number with prefix sip: or tel:”, 'sip:100@.*' means “calls to number 100”.
To Fax Voip FSP
Specifies the destination for Incoming Call. Fax Voip FSP application always route calls to Windows Fax Service (MS-FAX).
Fax Mode
Displays Fax Mode applied to the current rule. G.711 means G.711 fax (audio). T.38 means support for T.38 mode, when receiving faxes with this rule.
Audio Fax Tweaks
Individual Audio Fax options that override the general options that are specified in the Audio Fax Settings (SIP) or Audio Fax Settings (H.323).
Possible Audio Fax Tweaks options are:
MaxRate_in
Maximum bitrate for incoming audio faxes (Fax over G.711 codec). Maximum bitrate value can be set 14400/9600/4800 which corresponds to rate limits of standard protocols used for facsimile. This option overwrites the default maximum bitrate, specified in the “SIP=>Audio Fax=>Audio Fax Reception=>Maximum bitrate” field (in the case of SIP) or in the “H.323=>Audio Fax=>Audio Fax Reception=>Maximum bitrate” field (in the case of H.323).
ECM_in (0 – disabled, 1 - enabled)
Possibility to use Error Correction Mode for incoming audio faxes (Fax over G.711 codec). This option overwrites the default settings, specified in the “SIP=>Audio Fax=>Audio Fax Reception=>Enable Error Correction Mode” (in the case of SIP) or in the “H.323=>Audio Fax=>Audio Fax Reception =>Enable Error Correction Mode” (in the case of H.323).
T.38 Fax Tweaks
Individual T.38 Fax options that override the general options that are specified in the T.38 Fax Settings (SIP) or T.38 Fax Settings (H.323).
Possible T.38 Fax Tweaks options are:
T38MaxRate_in
Maximum bitrate for incoming T.38 faxes. Maximum bitrate value can be set 14400/9600/4800 which corresponds to rate limits of standard protocols used for facsimile. This option overwrites the default maximum bitrate, specified in the “SIP=>T.38 Fax=>T.38 Fax Reception=>Maximum bitrate” field (in the case of SIP) or in the “H.323=>T.38 Fax=>T.38 Fax Reception=>Maximum bitrate” field (in the case of H.323).
T38ECM_in (0 – disabled, 1 - enabled)
Possibility to use Error Correction Mode for incoming T.38 faxes. This option overwrites the default settings, specified in the “SIP=>T.38 Fax=>T.38 Fax Reception=>Enable Error Correction Mode” (in the case of SIP) or in the “H.323=>T.38 Fax=>T.38 Fax Reception=>Enable Error Correction Mode” (in the case of H.323).
T38SwitchOnTimer_in (Off – disabled, 0-20 – delay in seconds)
Forced switching to T.38 mode immediately (0 seconds) or after the specified time interval (1-20 seconds) for incoming faxes. Fax Voip FSP sends T.38 re-invite to the other side without waiting for T.38 re-invite or CNG tone from the other side. This option overwrites the default settings, specified in the “SIP=>T.38 Fax=>T.38 Fax Reception=>Switch to T.38 after ... seconds” (in the case of SIP) or in the “H.323=>T.38 Fax=>T.38 Fax Reception=>Switch to T.38 after ... seconds” (in the case of H.323).
T38SwitchOnCNG_in (0 – disabled, 1 - enabled)
Forced switching to T.38 mode if the fax machine specific tone (CNG signal) is detected when receiving a fax. Fax Voip FSP sends T.38 re-invite to the other side without waiting for T.38 re-invite from the other side. This option overwrites the default settings, specified in the “SIP=>T.38 Fax=>T.38 Fax Reception=>Switch to T.38 on CNG tone received” (in the case of SIP) or in the “H.323=>T.38 Fax=>T.38 Fax Reception=>Switch to T.38 on CNG tone received” (in the case of H.323).
T38Redundancy
T.38 Redundancy in the format I/LS/HS. The values for (I)ndication, (L)ow (S)peed and (H)igh (S)peed IFP packets are specified separately. This option overwrites the default settings, specified in the “SIP=>T.38 Fax=>T.38 UDPTL Redundancy” (in the case of SIP) or in the “H.323=>T.38 Fax=>T.38 UDPTL Redundancy” (in the case of H.323).
The following commands are available in the Incoming Plan Contextual Tab of the Ribbon:
Click to create new Incoming VOIP Call Routing rule.
Click to create a copy of the selected Incoming VOIP Call Routing rule. Can be useful when creating a large number of similar rules. To edit newly created rule, select it and use Edit command.
Click to edit Incoming VOIP Call Routing rule. One of the entries should be selected. Alternatively you can double-click the selected entry.
Click to delete one or more Incoming VOIP Call Routing rules. One or more entries should be selected.
Click to delete one or more Incoming VOIP Call Routing rules. One or more entries should be selected.
Click to delete all rules in the list.
Move the selected rule up.
Move the selected rule down.
Click to select all the entries in the list.
Click to unselect all the entries in the list.
Click to invert the selected entries in the list.
Most of the commands placed on the Incoming Plan Contextual Tab are also available from the context menu of the list.