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D-Channel Problems / Solutions

DCH Maint Indication - Counter Values by xJWLx
Posted: 26 Apr 13

Protocol counters
1 count of missing PRI handshakes
2 count of peer-initiated re-establishment link
3 count of unsuccessful retransmit N200 of SABME
4 count of unsuccessful retransmit N200 of DISC
5 count of N(R) errors
6 count of information fields with length greater than N201
7 count of undefined frames
8 count of information fields that are not allowed to contain information
9 count of FRMR frames received from the far end
10 count of CRC error frames received from the far end
11 count of REJ frames received from the far end
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)
43 count of layer 3 messages from system containing invalid mandatory IE(s)
44 count of layer 3 messages from system with IE(s) out of order
45 count of layer 3 messages from system containing repeated IE(s)
46 count of layer 3 messages from far end with an invalid call reference length
47 count of layer 3 messages from system with an invalid call reference flag value of 0
48 count of layer 3 messages from system with an invalid call reference flag value of 1
49 count of layer 3 messages from system with an invalid global call reference
50 count of unexpected layer 3 messages received from the far end
51 count of unexpected layer 3 messages received from the system
52 count of unexpected layer 3 timer expirations
53 count of protocol messages received when D-channel is not in service or waiting for a Service Acknowledge message

Back to Nortel: CS1000 (Meridian) systems FAQ Index
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