Specifications

HighWire MTP-2 - 1.2, September 4, 2002 CBI Message Summary 57
eim.eim_ue
eim_ueeim_ue
eim_ue
Q703 EIM UE parameter. Increment of the EIM counter after each interval
in which an error occurred
eim.eim_de
eim_deeim_de
eim_de
Q703 EIM DE parameter. Decrement of the EIM counter after each
interval in which no error occurred.
6-1-3. CBI_M2_SAAL_PARMS This structure is not used in MTP2 implementations and should be zeroed.
6-1-4. CBI_PKT_HDR This structure is a header for all messages which include control and data
parts.
Data structure.
typedef struct cbi_pkt_hdr
{
CBI_ULONG data_start;
CBI_ULONG data_len;
}
Parameters.
data_start
offset to the beginning of the data in the packet part of the IPS. This
offset allows reserved header space to be left at the beginning of the
packet.
data_len
Length of the data. This value refers to the length of the actual data itself,
not including the length of any requested header of tail bytes.
6-2. CBI Message Summary
The Level 2 - Level 3 Interface provides a set of structures for the different
messages passed between level 3 and level 2 when they do not reside in the
same N-BASE. This interface is intended primarily for use by third party MTP3
implementations but may also be used by an MTP3 to communicate with an
HW-MTP2 residing at a separate location when there is no distributed N-BASE
present.
6-2-1. Signals sent from L3 to L2 The following structures are sent from the L3 to the L2.
CBI_M2_REGISTER Identifies the associated L3 process.
CBI_M2_UNREGISTER Disconnects L2 from the sending L3 process and, for SAAL,
disconnects it from the ATM network.
CBI_M2_UPDATE_PARMS Supplies dynamically changeable configuration parameters to L2.
CBI_M2_QUERY_CONFIG Retrieves static configuration information from L2.