Lucent Technologies DEFINITY Enterprise Communications Server Release 5, CallVisor, ASAI Protocol Reference Instructions Manual

Codeset 6 Information Elements
Issue 6  June 1997
4-35
Data Item IE
The Data Item IE shown in Figure 4-20 returns information that an adjunct has 
queried for. The Data Item information element contains one information value. 
The data item type identifies what value is present in the IE. Presently, the Data 
Item IE is used in the response to the Integrated Directory Database query and in 
the reporting of ISDN Charge Advice.
Figure 4-20. Data Item Information Element
Data Item Type (octet 3):
This byte...

Information Elements
4-36Issue 6  June 1997 
 Data Item Value
 This value may be either an integer value, or an ASCII string. Charge amounts 
are encoded as integers and names are encoded as ASCII strings.
If an integer is encoded, then 7 bits of each octet are used. The high bit is an 
extension bit, and is set to 0 except in the last octet of the value. The most 
significant octets are ordered first. For example, 400 (decimal), which is 0x190 
(hexadecimal) is encoded in two octets: 
ASCII strings are...

Codeset 6 Information Elements
Issue 6  June 1997
4-37
 Domain
The Domain IE shown in Figure 4-21 specifies the domain for which an event is 
reported.
.
Figure 4-21. Domain Information Element8  7654321
Domain Information
0  1001001Byte1
Information element identifier
Length of Domain Information contents 2
1
Domain Type 3
Ext.
0/1
Address           4*
Ext
Domain TypeBits
7 6 5 4 3 2 1
0 0 0 0 0 0 0 Adjunct-Monitored call audit
0 0 0 0 0 0 1 Group Extension (includes ACD split)
0 0 0 0 0 1 1 Extension
0...

Information Elements
4-38Issue 6  June 1997 
nIf the domain type is a group extension, an extension, logical 
agent, trunk access code, VDN, announcement, or data 
extension, the address field may contain the extension 
number (in ASCII).
1 In an incoming Domain IE the ECS will 
parse, the only ASCII characters the ECS permits are the 
digits 0 through 9.
2 There may be instances of event reports 
where an address should be included, but an address is not 
available to the ECS. In such cases, the address...

Codeset 6 Information Elements
Issue 6  June 1997
4-39
nIf the domain type is “Talk State,” the address field contains a single 
byte coded as follows:
nIf the domain type is “Station Type,” the address field contains a 
single byte coded as follows:
nIf the domain type is “ASAI,” the address field contains a single byte 
coded as follows:
nIf the Domain type is Reason Codes, the address field contains a 
single byte with a binary value between 1-9.
nFor other domain types, the address field is not used...

Information Elements
4-40Issue 6  June 1997 
Facility Information Element (FIE)
The Facility information element (FIE) identifies and contains an ASAI capability 
request or response. CCITT Recommendation Q.932 uses an X.209 encoding of 
X.229 Protocol Data Units.
The FIE only appears once in a message. The maximum length of the BRI 
message determines the number of bytes that the FIE may occupy; therefore, it 
imposes an upper bound on the length of an IE.
Table 4-6 to Table 4-9 show the FIE encoding....

Codeset 6 Information Elements
Issue 6  June 1997
4-41
t
1. The component length is coded to indicate the number of bytes contained in the component (excluding
the component type tag and the component length bytes).
2. This ASAI implementation never uses or expects linked identifiers. Refer to the 
Adjunct/Switch
Application Interface (ASAI) Specification for a description.
3. Contains capability parameter(s) for the Invoke component type.
Table 4-6. Invoke Component
Invoke component SectionMandatory...

Information Elements
4-42Issue 6  June 1997 
1. The component length is coded to indicate the number of bytes contained in the component (excluding
the component type tag and the component length bytes).
2. The sequence tag is an anomaly in the Return Result component. Although other components are
similarly structured, the Return Result component is the only component with a sequence tag. This
arises from a specific backward compatibility need for the Q.932 Return Result component with respect
to other...

Codeset 6 Information Elements
Issue 6  June 1997
4-43
.
1. The component length is coded to indicate the number of bytes contained in the component (excluding the
component type tag and the component length bytes).
2. The ASAI specification and the Q.932 specification have an “error value” here in the return error component.
Both ASAI and Q.932 have the same encoding for the “error value tag” in the return error component and
the “operation value tag” in the Invoke component. This means that what...

Information Elements
4-44Issue 6  June 1997 
Component/Content Length
Lengths up to 127 bytes are coded using the short form of Recommendation 
X.209: bit 8 is set to zero and the remaining seven bits are a binary encoding of 
the length with bit 1 the least significant bit.
This length encoding is identical to that of Recommendation Q.931 for lengths up 
to 127 bytes.
.
Figure 4-23. Format of the Length Field (Short Form)
1. The component length is coded to indicate the number of bytes contained in the...