SIGNALING AND ROUTING FEATURES
CHAPTER 8
163
ECOTEL 3G 16.1. Revised: 1 March 2011.
8.13 CALL-FORWARDING TRANSLATION: ISDN TO SIP
To translate ISDN call forwarding services to SIP, the type of connected signaling gateway must be specified in the
section [ISDNFCGW]:
The current solution for call-forwarding translation is for the TELES.iLEX signaling gateway. Other solutions may be
implemented according to individual requirements. To use call-forwarding translation with the TELES.iLEX, the pa-
rameter Type must be configured as follows:
Type=TELES_LEX
Depending on the signaling gateway, other optional parameters may be included in this section. For a description
of these parameters, please refer to the parameters listed in Chapter 14.8 .
Example: The following example is of a customized call-forwarding configuration:
[ISDNFCGW]
Type=<signaling GW>
For call-forwarding activation, deactivation, and status queries, iLEX compatible sig-
naling gateways use SIP INVITE messages with specific call numbers that include the
special characters * and/or # (e.g. *41*1234#). The return values are included in the
field p-ie-display of a 183 SIP response.
Bear in mind that during simultaneous use of digit collection and call-forwarding
translation, an individual routing configuration must be set for digit collection in the
case of phone numbers that begin with the special characters * or #. This is necessary
because # is used in digit collection to indicate the end of a timer.
[ISDNFCGW]
Type=TELES_LEX
CMD_CFUActivate=*41*1234#
CMD_CFUDeactivate=#41#
CMD_CFUStatus=*#41#
CMD_CFBActivate=*43*2345#
CMD_CFBDeactivate=#43#
CMD_CFBStatus=*#43#
CMD_CFNRActivate=*42*3456#
CMD_CFNRDeactivate=#42#
CMD_CFNRStatus=*#42#
RETVAL_CFUActivateOk=CFU activated
RETVAL_CFUDeactivateOk=CFU deactivated
RETVAL_CFUStatusActDiv=CFU to 1234
RETVAL_CFUStatusNoDiv=CFU inactive
RETVAL_CFBActivateOk=CFB activated
RETVAL_CFBDeactivateOk=CFB deactivated
RETVAL_CFBStatusActDiv=CFB to 2345
RETVAL_CFBStatusNoDiv=CFB inactive
RETVAL_CFNRActivateOk=CFNR activated
RETVAL_CFNRDeactivateOk=CFNR deactivated
RETVAL_CFNRStatusActDiv=CFNR to 3456
RETVAL_CFNRStatusNoDiv=CFNR inactive
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