12 count of layer 3 messages with less than 4 octets
13 dummy counter, always zero
14 count of undefined layer 3 message types
15 count of layer 3 messages missing one or more mandatory information elements
16 count of layer 3 messages missing one or more undefined information elements
17 count of layer 1 reports of no external clock being received
18 count of aborted frames
19 count of SABME frames received with incorrect C/R bit
20 count of supervisory frames received with F = 1
21 count of unsolicited DM responses with F = 1
22 count of unsolicited UA responses with F = 1
23 count of unsolicited UA responses with F = 0
24 count of DM responses with F = 0
25 count of times that no response was received from the far end after N200
transmissions retransmissions of RR or RNR
26 count of frames received with incorrect header length
27 number of times owner receiver busy condition was entered
28 number of times peer receiver busy condition was entered
29 count of messages with call reference length greater than 2
30 count of optional IEs received with invalid contents
31 count of mandatory IEs received with invalid contents
32 count of messages received with IEs not ordered correctly
33 count of IEs which were repeated in received messages, but are only allowed to
appear once per message
34 count of IEs received with length exceeding the specified maximum length for the IE
35 count of layer 3 messages from far end with invalid call reference flag value of 0
36 count of layer 3 messages from far end with invalid call reference flag value of 1
37 count of layer 3 messages from far end with invalid global call reference
38 count of layer 3 messages from system that are too short
39 count of layer 3 messages from system containing an undefined message type
40 count of layer 3 messages from system missing mandatory IE(s)
41 count of layer 3 messages from system containing unsupported IE(s)
42 count of layer 3 messages from system containing invalid operational IE(s)
D-channel maintenance
74 ISDN Primary Rate Interface Maintenance November 2011
Comments? infodev@avaya.com
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