This is quite possible. You could have a customer who is either sending the name and the carrier is translating it directly to the GenericName field in the ISUP, or they're sending it on a PRI in the Facilities or Display IE and the switch is translating it to GenericName. Why do terminating carriers listen to the contents of the GenericName field, one might ask? (Shouldn't they be doing a CNAM dip unconditionally, after all?) Because Canadian calls implement caller ID with name that way. They don't use a CNAM database like we do in the US. If you ignore GenericName, you lose out on caller ID with name data on Canadian calls. -Paul milosz wrote:
hi all,
has anyone heard of a US residential carrier transmitting the callername parameter from the IAM instead of doing a normal CNAM lookup? i have some users--for whom the pbx is (intentionally) set up to transmit an invalid cpn--who are claiming that when they call their home phones from the office, their internal (sip) caller name appears on the caller id along with the invalid cpn, which makes no sense from a CNAM lookup standpoint. the only thing i could think of (other than they are nuts/lying) is that their gateway is transmitting the sip callername in the IAM and the carrier is passing that along instead of doing a lookup. the btn is the same for all users so that can be ruled out.
they are all on cablevision or time warner.
thanks,
milosz ------------------------------------------------------------------------
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