Issues with ANI to PSTN

1
Issues with ANI to PSTN

• IFAST-14
• Lima, Perú
• October 4-5, 2000

2
Typical roaming situation
3
Alternatives to send in the callingnumber field
of the signaling to the PSTN

• MIN
• TLDN
• A fix number
• The real number in its local, national or
  international format (E.164)

4
Recommendations

• A solution in the short term is to send a fix ANI
  to the PSTN to avoid any problem in the call
  completion to the PSTN.
• In the long term the MDN field of IS-41 should be
  activated to send the ANI and to be able to use
  the services of redialing and identification.