version:IMS 8.1 package
How to meet the operators' two requirements as follow:
1.A city change its' area code,IMS subscribers need to hear annoucement when they dial the old area code of the city.
2.Dial specific number belonging to IMS from other networks,if they can hear announcement,it proves IMS system is OK.How to announce.
There are caller annoucement flow and called annoucement flow,they are different.For 1th requirement,it is caller annoucement flow ,USER---P-CSCF---S-CSCF---ATS;For 2th requirement,it is called annoucement flow,
user---other network---I-CSCF---S-CSCF---ATS.If you choose improper flow you can't meet the requirement.
Configuration is as follow:
1.Caller side annoucement(suppose the number you dial is 1111):
ADD CNACLD: LOCNUM=65534, URISCH=TEL_URI, PFXCDE=K'1111, MINL=4, MAXL=24;
ADD PFXPRO: CALLSC=65534, PFX=K'1111, SSM=SDT, TT=1;.
2.Called side annoucement(suppose the number you dial is 3900999,config CNACLDMT according to URI sent to ATS):
ADD CNACLDMT: USMT=SIP_URI, SIPURIMT="+firstname.lastname@example.org", FCMT=BARRING_CALL, STF=YES, TTMT=0;(if the URI sent to ATS is SIP format)
ADD CNACLDMT: LPMT=65534, USMT=TEL_URI, PFXMT=K'810375173900999, FCMT=BARRING_CALL, STF=YES, TTMT=0;(if the URI sent to ATS is TEL format)
Open the switch:
MOD LDNSET: LOP=0, MTANAF=YES;.