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</o:shapelayout></xml><![endif]--></head><body lang=EN-US link=blue vlink=purple><div class=WordSection1><p class=MsoNormal>Dear Team<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>We have a setup with multiple SBCs in line like<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Access SBC -> Routing SBC -> Core SBC -> Interconnect SBC<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>On each level we apply topology hiding so the callid keeps increasing in length ending up with 200+ characters which is not manageable by all upstreams carriers. Some of those asking for max 40 char length callid.<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Is there a way to keep topology hiding to all SBCs and decrease / minimize / control the callid length?<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p><p class=MsoNormal>Best regards<o:p></o:p></p><p class=MsoNormal><o:p> </o:p></p></div></body></html>