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Wireless E911 Guide CG-EWCG-001
BellSouth Wireless E9–1–1/SS7 Interconnection
Guide
Issue 3, January 6, 2004
A.7.2 Calling Party Number Parameter
Calling Party Number is a required parameter in the IAM. The Called Party Number parameter
value is variable depending upon which trunk group signaling option is being used. In any case it shall
either contain the digits "911" or a pANI.
The Called Party Number parameter includes the digits "911" when the pANI is provided in the Generic
Digits Parameter (WRLS_STD signaling option), or when the Calling Party Number contains the pANI
(E911_STD for Wireline Compatibility Mode).
The Called Party Number parameter contains the pANI when the Generic Digits Parameter
is not
used, but
Wireline Compatibility Mode is not desired (WRLS_CLD signaling option). The need to use WRLS_CLD
may be a result of a situation where the WSP switch cannot support a GDP parameter. In that case the
pANI would appear in the Called Party Number parameter. If a WSP switch can support a GDP, and if
Wireline Compatibility Mode i
s not
desired, then the GDP is the recommended place to put the pANI
(WRLS_STD signaling option).
The wireless carrier shall specify the contents of the Called Party Number (i.e., the digits "911" or a pANI)
at the time the trunk group is ordered (via their BellSouth account team using form RF-1004-WS). Once a
trunk group is provisioned, the wireless carrier shall adhere to their choice (i.e., a trunk cannot signal the
digits "911" for one call and a pANI for another call).
Called Party Number is a required parameter in the IAM.
A.7.3 Generic Digits Parameter & GDP Type
The Generic Digits Parameter (if required) shall contain a pANI. The "type of digits" field in the Generic
Digits Parameter shall be coded 01101 (decimal 13) for cell site and sector identification. A Generic Digits
Parameter is conditionally required in the IAM.
A Generic Digits Parameters
hall be included in the IAM when a wireless carrier chooses to send the
digits "911" in the Called Party Number parameter (WRLS_STD signaling option). If a WSP switch can
support a GDP, and if Wireline Compatibility Mode is not desired, then the GDP is the recommended
place to put the pANI.
A GDP shall NOT be included in the IAM if the Calling Party Number or the Called Party Number
parameter contains the pANI.
The wireless carrier shall specify whether a Generic Digits Parameter will be included in the IAM at the
time the trunk group is ordered (via their BellSouth account team using form RF-1004-WS). Once a trunk
group is provisioned, the wireless carrier shall adhere to their choice (i.e., a trunk cannot include a GDP
for one call and not for another call).
Generic Digits Parameter is a conditionally required parameter in the IAM.
In all cases where GDP is used, "type of digits" must equal "13". Delivery of a pANI in a GDP that
isn’t type 13 will not work as intended.
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