SPN Alternate Routing using ARRN
A number that matches an SPN (Special Number) will always take that RLI (Route List), unless it more specifically matches an Alternate Routing Remote Number (ARRN) entry, in which case it will take the associated Alternate RLI (ARLI).
With Supplimental Digit Recognition (SDDR), ARRN is used to alternatively route a specific number (or a range) within an SPN. Flexible numbering plan (FNP) has to be yes under the NET_DATA data block (LD 15, print in LD 21). You can only use ARRN with SPNs.
An example SPN table, in LD 90:
REQ prt CUST 0 FEAT net TRAN ac1 TYPE spn SPN SPN 017 FLEN 11 RLI 3 ARRN 2 ARLI 12 SDRR ARRN CODES = 1 ITEI NONE SPN 07 FLEN 8 RLI 3 ARRN 52 ARLI 6 ARRN 555602 ARLI 8 ARRN 555604 ARLI 8 SDRR ARRN CODES = 3 ITEI NONE SPN 08 FLEN 0 RLI 3 ARRN 0 ARLI 8 SDRR ARRN CODES = 1 ITEI NONE SPN 09 FLEN 0 RLI 3 SDRR NONE ITEI NONE
The above example shows:
REASON: All my cell calls (017) will use RLI 3, but I have a VodaFone GSM Gateway, so I'll use this for my 0172 calls.
07-52XXXX will go via RLI 6
07-555602 will go via RLI 8
07-555604 will go via RLI 8
REASON: It might be desirable to split specific numbers out, either for different routes, or FRL (NCOS) reasons.
REASON: 08 calls will use my normal outgoing route, except 080X calls which will go via RLI 8. A reason to do this might be to change the FRL.
To add an Alternate Routing Remote Number entry, CHG the SPN and enter ARRN at the Supplimental Digit Recognition (SDRR) prompt. Then enter the ARRN and associated ARLI.
To remove an ARRN entry, prefix the number with x (CHG, not OUT the SPN!).
SPN 07 FLEN INPL CLTP RLI SDRR arrn ARRN x555604 ARRN SDRR ITEI