Billing Number Vs. CallerID Number | Asterisk 11.5.1

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In a multi-tenant environment, we are sending various CallerIDs outbound from asterisk based on who the user is. We have an insurance agency who would like to present a toll free callerid. This works.. unless they’re calling a toll free number. In that case, occasionally, the call fails. However, should we send a correctly formatted npanxx of a local number, the call completes.

We have been advised that we can send the billing telephone number as a separate header and the call will complete, all-the-while, presenting the toll free number as the caller id.

Does anyone know of the correct header required to provide this functionality?

3 thoughts on - Billing Number Vs. CallerID Number | Asterisk 11.5.1

  • Often it is P-Asserted-ID, but depends on the carrier. You should be asking your carrier how to do this. Be careful, if the carrier doesn’t like your CID spoofing they might bill the call to a default number on the account.

    I suspect it is the destination which is rejecting the call because toll free numbers are not considered valid, not your carrier rejecting the call.

    —–Original Message—

  • Speaking as a carrier that allows this, we require the P-Asserted-Identity field. This is the example of a header that we insert with our SBC:

    P-Asserted-Identity:

    The phone number is the identifying marker to tell our Metaswitch the needed information to associate the call to the correct object for billing and call restriction purposes.

    The IP is the internal IP of our Metaswitch. It is the internal IP due to our MetaSwitch being behind our kamailio SBC.

    As a carrier, I have never seen a case where a call (inbound or outbound) was rejected because the received caller ID string contained a toll free number. For me, as long as it passes the number validation step, we are good. And a toll free number looks like any other NAMPA number.

  • Gateway computers rejects calls like this. I was informed that their carrier rejects the calls because they cannot accurately bill.

    It seems pretty silly with voip and number portability.

    Thanks, Steve T

    asking your carrier how to do this. Be careful, if the carrier doesn’t like your CID spoofing they might bill the call to a default number on the account. free numbers are not considered valid, not your carrier rejecting the call. asterisk-users-bounces@lists.digium.com] On Behalf Of Positively Optimistic
    11.5.1
    from asterisk based on who the user is. We have an insurance agency who would like to present a toll free callerid. This works.. unless they’re calling a toll free number. In that case, occasionally, the call fails. However, should we send a correctly formatted npanxx of a local number, the call completes. separate header and the call will complete, all-the-while, presenting the toll free number as the caller id. functionality?