Good start is with GSM TS 03.82. It has flows for CF and the different conditions, e.g. Now Reply, Not Reachable, Busy and Unconditional. Look at ETSI dot org. Note that posts with URLs are rejected by this forum.
HLR/HSS/UDC will need to be configured so that CF (with conditions) can be checked with the Roaming status.
Borana - 10th November 2016 (14:20 GMT)
I want the flow of the CFR ( call forwarding)
Wallis Dudhnath - 28th October 2015 (15:20 GMT)
For Roaming, CSPs have TAP and RAP procedures in place. For cross-border routes CDRs are transferred via a Mediator.
VBR/ Wallis Dudhnath
Abdul - 26th October 2015 (15:19 GMT)
Hi, How to identify the voicemail trombone CDRs in TAP file. Basically how to identify the MT and its related MO CDR for call forwarding in TAP file. I want to identify the MT and MO CDRs for voicemail call forwarding when subscriber in roaming.
Wahid - 4th June 2012 (08:58 GMT)
for inbound roamers, the selection of PLMN depends on the roaming agreement between , but still an inbound sub can register to one PLMN at a time and that is HPLMN
tk - 13th December 2010 (08:57 GMT)
call forward unconditionally, does it generate a record in the tap file? in camel..
what abt when imsi is detached?
Hocsène - 12th October 2010 (15:29 GMT)
Call flow roaming
jenish gandhi - 11th October 2010 (19:00 GMT)
i want to know about roaming protocol and fully details of it...how it works....introduction with figure..
jenish gandhi - 11th October 2010 (18:56 GMT)
hi...i m jenish....
Monalisa - 18th September 2010 (08:21 GMT)
What is the cause of outgoing call issue of ported in roaming prepaid Number