Allow external call forward but block forwarding to 9, 90, 91, and 9011.

[Telecorn]

CS1K rls 7.6 here. We currently have external call forwarding denied but are being asked to enable it. My concern is that malicious call forwarding might be allowed for a toll fraud extravaganza. I know I can set maximum forwarding digit length, but is there a way to prevent forwarding to just 9, 90, and numbers that start with (or simply are) 91 and 9011? And while I'm at it, can I restrict the same open ended transfers?

Thanks all

 

[bignose21]

If the users has the rights to dial it they can forward to it if like you say the length of the call forward key is assigned enough digits. You could restrict the PSTN route from allowing call forward with CFWR Yes in the RDB (Feature "Call Forward to Trunk Restriction").

 

[Trason]

here is what we do for that here: it just gives a busy. we use this for 01 011 and 1411. just build an spn for everything you want to deny and piont it at that RLI.

SPN 01
FLEN 0
INPL NO
CLTP NONE
RLI 12
SDRR NONE
ITEI NONE



RLI 12
ELC NO
ENTR 0
LTER YES <----------(this mean local termination)
CONA NO
TOD 0 ON 1 ON 2 ON 3 ON
4 ON 5 ON 6 ON 7 ON
VNS NO
FRL 0
DMI 0
CTBL 0
FCI 0
FSNI 0
SBOC NRR
IDBB DBA
IOHQ NO

ISET 0
NALT 5
MFRL 0
OVLL 0

 

[Telecorn]

^ so for that solution can the users still call 901, 9011, and 91411, just not able to forward/transfer to it? I just don't want to make any changes that break outbound calling.

 

[bignose21]

The one Trason suggests is to stop the calling altogether.

The one I suggested should work (I have never used it but its there in the feature guides).

 

[KCFLHRC]

Will the user be changing the number they forward to or will it always be the same # they are forwarding to? The way we do it is to not allow the user to call forward external but allow them to 4 digit forward to a dummy acd que and then night call forward that to their cell.

 

[Trason]

we don't want anyone call these numbers. if they have a need to call these numbers, then they call the operator, who dials the the ACOD of the trunk and dials the number for them. this bypasses bars/nars.

 

[Telecorn]

Thx KCFLHRC, I thought of that too, but 9011 is a 4 digit number so that would still allow a phone to be maliciously call forwarded to wide open international access.

bignose21, I don't even see that prompt come up in a PRT or a CHG on the route.