Mosbah, We are talking SS7/ISUP here right? What Switch (make,model,software) handles Subscriber B? ISUP Switch A will let ISUP Switch B know (if it was configured by people with a notion of the matter) the redirected number plus the ISUP redirection parameters but it is completely unknown in your equation how Switch B and Asterisk relate to eachother. Is Asterisk=Subscriber B or is there any gateway involved which follows any standard (e.g. ISUP<->SIP)? http://www.dialogic.com/webhelp/IMG1010/10.5.1/WebHelp/Description/SIP/sip_d iversion_scen.htm regards, Florian Von: asterisk-ss7-bounces at lists.digium.com [mailto:asterisk-ss7-bounces at lists.digium.com] Im Auftrag von mosbah abdelkader Gesendet: Montag, 22. August 2011 14:28 An: asterisk-ss7 at lists.digium.com Betreff: [asterisk-ss7] ISUP call forwarding Hi, please can anyone help me on that situation: Subsc. A ------------------------------Subsc. B --------------------------Asterisk Subsc A calls B. B forwards the call to Asterisk using ISUP. Is the Subsc A number included in the parameters of the ISUP call forwarded from B to Asterisk? Please help. -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.digium.com/pipermail/asterisk-ss7/attachments/20110822/e7095526/attachment.htm>