"Henry Cabot Henhouse III" <> writes:
> Is the caller id that is sent stored in the actual ATA?
In general, data for direct SIP calls (eg. between two SIP phones)
without any PSTN (Public Switched Telephone Network) gateway between,
will show the name that is configured into the ATA. Calls made to the
PSTN will show the name that some central database has for that phone
number. Changing the value in your ATA won't have any effect for
these calls.
It is ironic that free direct calls between two SIP phones will tend
to be better quality and more featureful (like being able to correctly
display each family members name in the caller-id) than calls made
through a for-pay voip-to-pstn gateway service.
> If so, how does one change it?
If you bought an ATA that comes password-protected you are probably
out of luck. Some services will unlock it for you when you leave for
some nominal fee (like $15). Others will charge you extra if you
don't return the unit (even though you might have paid a fee to "buy"
the unit from a store. Go figure.)
Once you know the password, or if it is a fresh unit from the factory
without a password, you just point your browser at the ATA's IP
address, enter the admin password and change the configuration. Some
units like the Sipura have hundreds of configurable items. Others
like the Grandstream line have maybe two dozen items you get to tweak.
Obviously it helps to have the ATA's manual. Both Sipura and
Grandstream have some of their manuals online in pdf form.
-wolfgang
--
Wolfgang S. Rupprecht
http://www.wsrcc.com/wolfgang/
Direct SIP URL Dialing:
http://www.wsrcc.com/wolfgang/phonedirectory.html