You configure the call-routing table entries in the LANconfig under by clicking on the button Call routing.
An entry in the call routing table consists of:
- Conditions that have to be met so that the entry is "considered" appropriate.
These include:
- Information about which subscriber is to be called; called number/name (Called Party ID), called domain (if applicable).
- Information about the calling subscriber; calling number/name, calling domain, source line through which the call reaches the LANCOM VoIP router.
- Instructions regarding the procedure for the call:
- How is the telephone number translated and modified for further processing?
- Which line should be used to place the call (destination line)?
- Which backup lines should be used if the destination line is not available?
The entries are searched row by row; the first suitable entry is performed. For this reason the special entries should be configured first of all, followed by the general entries.
If an entry is found in the call routing table with the destination line "RESTART", then the entire pass starts again with the new, translated called party ID. The entry for the source line (calling line) is deleted for the next pass.
Both the call routing table and the local subscriber table may contain and process alphanumeric names where this makes sense.
- Active entry/default line
- The routing entry can be activated, deactivated, or marked as a default entry. All calls that can be resolved using the first passes but not using the call routing table or local subscriber table are then automatically resolved using these default entries. You can use any destination name and destination domain; only any source filters that you have set will be processed.
- Priority
- The Call Manager sorts all entries with the same priority automatically, so that the table can be processed through logically from top to bottom. With some entries, however, the sequence of the entries has to be specified (for the telephone number translation, for example). The entries with the highest priority are automatically sorted to the top.
- Called number
- The called party name or destination telephone number (without domain information) that is called. The # character is used as a placeholder for any character strings. All characters in front of the '#' are removed, the remaining characters are used in the "Number/name" field instead of the # character to further establish the connection. Example: The call routing table contains entry '00049#' as the called number/name and '00#' as the number/name. For all calls with a preceding '0' for outside-line access and the complete dialing code for Germany, only the leading '0' for the outside-line access and the leading '0' for the local area dialing code are retained as the number/name; the country ID is removed. So '00049 2405 123456' becomes '0 02405 123456'. Independently of this, an alphanumeric number can also be specified.
- Comment
- Comment on the current routing entry
- Calling number
- If the calling number is to be replaced by another number in the call route, the desired number must be entered in this field. If the special value "EMPTY" is selected and the filter field Calling number is filled with any character (e.g. wildcard #) at the same time, a number suppression for outgoing calls can be configured for the call route.
- Destination number
- This telephone number is used to continue with establishing the connection. If no connection can be established using this telephone number and the corresponding line, then the backup telephone numbers with their associated lines are used At least one of the fields Destination number, 2nd dest. number or 3rd dest. number must have content. They are evaluated in this sequence. A blank field is skipped.
- Destination line
- The connection is established using the destination line. Normal destination lines
can be:
- ISDN
- All defined SIP lines.
- REJECT highlights a blocked telephone number.Note: This value also allows you to prohibit control characters on SIP lines.
- USER forwards the call to local SIP or ISDN subscribers.
- RESTART begins a new pass through the call-routing table with the previously formed Destination number. The former Source line is deleted.
Note: This field has to be completed, otherwise the entry is not used. - 2nd Destination number, 3rd Destination number
- This telephone number is called if nothing is entered in Destination number or the corresponding "line" is not available. If the 2nd destination number and the corresponding 2nd destination line are not available, then the 3rd destination number and the corresponding 3rd destination line will be used instead.
- Called domain
- This entry filters the called domain, the "Called Party Domain". The call
router entry is only considered to match if the Called Party Domain for the call matches
the domain that is entered here. If nothing is specified, any destination domain is
accepted.
The following can be entered as called domains:
- ISDN
- The internal VoIP domains of the LANCOM VoIP router.
- All domains entered for the SIP and SIP-PBX lines.
- Calling number
- This entry filters the calling number/name, the "calling party ID". It is
specified as an internal number or as a national or international telephone number. The
domain is not specified. No '0' or other character for a line ID is prefixed;
the ID is used as if it comes from the line or from internal telephone calls.
The call router entry is only evaluated as matching if the Calling Party ID for the
call matches the number that is entered here. After '#', any characters can be
accepted. If nothing is specified here, any Calling Party ID is accepted.
Note: The following special functions can be entered as a calling number:
- EMPTY can be used for Calling Party IDs that are not specified.
- Calling domain
- This entry filters the "calling domain". The call router entry is only
considered to match if the Calling Domain for the call matches the domain that is
entered here. If nothing is specified, each calling domain is accepted.
The following can be entered as calling domains:
- ISDN
- The internal VoIP domains of the LANCOM VoIP router.
- All domains entered for the SIP and SIP-PBX lines.
- Source line
- This entry filters the source line. The call router entry is only considered to match
if the source line for the call matches the line that is entered here. If nothing is
specified, any calling line is accepted.
The following can be entered as the source line:
- USER.ISDN for calls from a local ISDN subscriber
- USER.SIP for calls from a local SIP subscriber
- USER # for calls from a local subscriber in general
- All ISDN, SIP and SIP-PBX lines that are entered.
