[cisco-voip] CallerID conundrum...

[Vance Shipley]

Jeff,

The Calling Party Number (as well as Called) information element has
a great deal more in it than "80569xxxxx".  The Nature of Address
indicators tell the network a lot about what the digits really 
represent and how to deal with it.  For instance there is the
presentation indicator:

      Presentation indicator (octet 3a)

      Bits
      ----
      7 6  Meaning
      0 0  Presentation allowed
      0 1  Presentation restricted
      1 0  Number not available due to interworking
      1 1  Reserved

But in your case it's much more likely that the Type of Number and
Numbering Plan indicators are the issue:

      Type of number (octet 3) (Note 1)

      Bits
      -----
      7 6 5
      0 0 0  Unknown (Note 2)
      0 0 1  International number (Note 3)
      0 1 0  National number (Note 3)
      0 1 1  Network specific number (Note 4)
      1 0 0  Subscriber number (Note 3)
      1 1 0  Abbreviated number (Note 5)
      1 1 1  Reserved for extension
      
      

      Numbering plan identification (octet 3)

      Numbering plan (applies for type of number = 000, 001, 010 and 100)

      Bits
      -------
      4 3 2 1
      0 0 0 0  Unknown (Note 6)
      0 0 0 1  ISDN/telephony numbering plan (Recommendation E.164 [19])
      0 0 1 1  Data numbering plan (Recommendation X.121 [21])
      0 1 0 0  Telex numbering plan (Recommendation F.69 [22])
      1 0 0 0  National standard numbering plan
      1 0 0 1  Private numbering plan
      1 1 1 1  Reserved for extension



If you don't send reasonable values for these the information element may
be ignored.  There is also the screening indicator:

      Screening indicator (octet 3a)

      Bits
      ----
      2 1
      0 0  User-provided, not screened
      0 1  User-provided, verified and passed
      1 0  User-provided, verified and failed
      1 1  Network provided


If it's not "Network provided" it may be ignored.  Certainly you couldn't
blame them for ignoring it if it's "User-provided, verified and failed".  :)

	-Vance

Vance Shipley
Wanspot Inc.
vances at wanspot.ca

On Fri, Aug 22, 2003 at 12:20:00PM -0700, Jeff Behl wrote:
}  
}  when calls are made from a voip phone to a Cingular or AT&T cell phone, 
}  the callerid shows up just peachy.  when made to a Verizon phone, the 
}  recipient gets "Unknown Number".  my router shows: