GTE Omni Si Database Technical Practices Manual
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TL-130200-1001 At the same time, the system assigns channel 18 in control memory A. channel memory and control memory A are connected by channel 18. 4. By looking at the Control Memory address of Channel 18(address 0892) the system knows that Directory Number 2083 is calling directory number 2055. Control memory address 0892 (80 hex) is pointing to 0880 (92 hex). See Figure 6.2. 16 17 18 1908920440 044916 17 18 19 Figure 6.2 Time-Switch Memory Setup (Channel 16)5. Once the connection is complete, the system scans each channel. For each channel in use, the system takes a data sample and writes that sample into the matching channel in the Information memory. After taking data samples from directory number 2083 (channel 18), the system goes to the directory number 2055 (channel 16) in control memory A. The system goes to channel 16 in the information memory to retrieve data which is sent to 2083. Call tracing involves looking at the samples passing from one memory location to another and analyzing the samples for contents and/or errors. 52108187 M-21 5
TL-130200-1001Memory Dumps6.1 Call tracing involves analyzing the address contents of channel memory, control memories A and B, and pad memory. Memory dumps, or printouts of memory contents, are made by entering General Read (GR) commands at the terminal keyboard (see Section 2.0, Maintenance Commands). The GR commands for control memory A and B and pad memory dumps are listed in Table 6.2. Examples of Channel Memory dumps and a Pad Memory dump are also listed. Table 6.2Memory Dump General Read Commands Maintenance CommandsDump Memory of: M-21 6GR DO 800 8BFControl Memory A for both the Get Started and Expansion Files GR DO A00 ABFControl Memory B for both the Get Started and Expansion Files GR DO COO CBFPad Memory for both the Get Started and Expansion Files Memory Dump6.2 Memory dumps contain information about data contents and Contentstraffic patterns. The following facts apply to information displayed in a memory dump: 1. Channel Memory: - The dedicated time slot assigned to the DTMF receiver is AO. It appears in every channel memory dump. - Channel assignments (time slots) appear with the highest number listed first. - Memory address data includes the Hardware Identification Number (HID). 2. Control Memories: D When a memory dump occurs, random data appears at various addresses. - Control memories A and B are used for three-way conversations. The address data in control memory A is the same as that in control memory B for two-party connections. 81875210
TL-130200-1001Call Tracing6.3 Assume that the OMNI SI in the following examples has an ExamplesExpansion File. The attendant line circuit is located in the Expansion File, group C, universal card slot 1, Circuit 4. _. Two-Party ConnectionThese examples use the Hardware Identification Number (HID) only. Final determination of the connection requires the data base listing or use of Recent Change. It is assumed that references are made to the memory cross-reference tables (see Table 6.1). Only the addresses are identified since absolute addresses are used for all Control and Pad Memory tables (see Section 2.0, Maintenance Commands - Hardware Write Commands for addressing procedures). 6.3.1 Trace connection between two parties: 1. See channel memory Expansion File dump in Table 6.4. Address 02% has HID data 16. 2. See control memory A dump in Table 6.5 and control memory E3 dump in Table 6.6 to see that addresses 0889 and OAB9both have data 92. 3. Address 0892 shows interchange data 89 confirms two-way connection. 4. See channel memory Get Started File in Table 6.3. Address shows location to be file Y, universal card slot 3, circuit 7 at address 0449. Three-Party Connection6.3.2 An unknown trunk is connected to line 2281. 1. Find the HID of line 2281 using the site-dependent data base printout or Recent Change. Line 2281 is in Get Started File Y, universal card slot 4 (file slot 21), circuit 6. 2. See Channel Memory Get Started File dump in Table 6.3. Scan the two group 0 columns (first and fifth two-character address data columns) to locate data 11.Look to address column and see that 0448 contains data 11 and look to channel number column to see that channel 18 is used (use information from memory dump or check memory cross-reference table). 3. See CEC control memory A dump in Table 6.5. Locate channel number 18 and group 0 to get address coordinates (memory cross-reference table shows address 0890 contains data B2). Data B2 shows the second two characters of a control memory address that line 2281 is listening to (data in information memory or interchange data). Checking address 08B2 fails to locate the corresponding interchange data (90),so this could be a three-way call. 52108187
TL-130200-1001 4. See CEC control memory B dump in Table 6.6. Locate address for channel number 18 and group 0. Data BA is different from that in control memory A (82) which shows that this is a three party connection. 5. See pad memory dump in Table 6.7. Locate address by channel number 18 and group 0 (also use memory cross-reference table). Address OC90 contains data 17 which means that Bit 7 (CMM A) of the pad memory control word is set to 1. This indicates that interconnect memory is in use. Refer to Pad Memory Word Layout. 6. PEC 0 Channel Memory addresses 0459 and 0450 are found using memory cross-reference. These two addresses show . the location is file B, HID - 91 and 24. Connection to a TCR6.3.3 Trace connection to a TCR with dial tone present. 1. See channel memory Expansion File dump in Table 6.4. Address 025F has HID data 14. 2. See control memory A dump in Table 6.5. Address 08BF has data CO (dial tone) 3. Identify locations of TCRs using data base information. 4. TCR could be found in (a) the same file as HID receiving dial tone, (b) the same group combination, or (c) the interconnected group. In Table 6.5, group 6 column (08A5,AB, B4, and BD) shows interchange data BF in address 08BD relates to step 2 statement. Address OCBD shows that interconnect memory is not used. Dedicated Time Slot6.3.4 Trace dedicated time slot. 1. See channel memory Get Started File dump in Table 6.3. Address 044C has data 14 indicating file X, universal card slot 1, circuit 4 with time slot allocated. 2. See Control Memory A dump in Table 6.5 and control memory B dump in Table 6.6 to check that addresses 0898 and OA98 both have 08 (quiet code). 3. Inter-digit quiet could be taking place but interchange data (98) is not found with a TCR associated address. Data base shows this is the attendant’s line circuit, a dedicated time slot, and that the attendant was idle at the time of the dump. 81875210
5210TL-130200-1001 Connection Between6.3.5 Trace connection between files. Files 1. See channel memory Expansion File dump in Table 6.4. Address 025C has HID data 16.2. See control memory A dump in Table’65 and Control Memory 6 dump in Table 6.6 to see that addresses 0889 and OAB9 both have data 92. 3. Address 0892 shows interchange data B9 confirms connection.4. See channel memory Get Started File in Table 6.3. Address shows location to be file Y, universal card slot 3, circuit 7 (a line) at address 0449. 8187 M-21 9
TL-130200-1001Table 6.3Channel Memory Get Started File 04000408 0410 0418 0420 0428 0430 0438 - 0440 0448 0450 0458FO FO - -FO FO - -FO FO - -FO FO - -FO FO - -FO FO - -FO FO - -FO FO - -FO 46 -. -11 37 - -03 FF - -01 91 - -EVEN CHANNEL GROUPS 0 1 - - Table 6.4 0200 02080210 0218 0220 02280230 02380240 0248 0250 0258 M-220FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FO FOFO FO FO FO FO FO FO Fd FO FO FO FO FO FO FO FO 03 FO FO FO 01 FO EVEN CHANNEL GROUPS 4 5 6 7 8187FO FO - -FO FO - -FO FO ‘- -FO FO - -FO FO - -FO FO - -FO FO - -FO FO - -FO FO - -14 FO - -02 FO - -00 24 - -ODD CHANNEL GROUPS 0 1 - - 00and01 02and03 04and 05 06and07 08and09 10and 11 12and13 14and 15 16and 17 18and 19 20and 21 22and23CHANNEL NUMBERS Channel Memory Expansion FileFO FO FO FO FO FO FO FO FOFO FO FO FO FOFO FO FO FOFO FO FO FOFO FO FO FOFO FO FO FO FO FO FO FO FO FO FO FOFO FO 00and01 02and03 04and 05 06and 07 08and 09 10and 11 12and13 14and 15 16and17 18and19 FOFO02FO20and21 16FO001422and23CHANNEL ODD CHANNELNUMBERS -GROUPS 45675210
08000808 08100818 y.08200328 0830 0838 0840 0848 0850 08580860 0868 0870 0878 0880 0888 08900898 08A0 08A80880 08B8 5210GR DO 800 8BFPAGE DO D8 08 D8 D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 D8 D8 08 D8 B2 D8 D8 08 D8 D8GRP 0 Table 5.5 Control Memory ATL-130200-1001 D8 D8 D8 D8 08 D8 -D8 D8 D8 08 08 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 08 D8 92GRP 4D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 76 D8 B9 D8 08 D8BA 82GRP 1 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 D8 D8 D8 D8 08 D8GRP 5GRP D8 08 D8 D8 08 D8 D8 D8 08 D8 D8 D8 D8 D8 08 D8 08 D8 D8 D8 D8 D8 D8 BFGRP 6GRP 8187D8 D8 D8 D8 D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8co GRP 7 00 01 02 0304 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23CHANNEL NUMBER M-221
TL-130200-1001 Table 6.6 Control Memory B GR DO A00 ABF PAGE DO OAOO OA08 OAl 0 OA18 OA20 OA28 OA30 OA38 OA40 OA48 OA50 OA58 OA60 OA68 OA70 OA78 OA80 OA88 OA90 OA98 OAAO OAA8 OABO OAB8M-222 D8 D8 D8;.. 08 D8 08 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 08 D8BA D8 D8 D8 D8 D8D8 D8 D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 92GRP GRP 04D8 D8 D8 D8 08 .D8 D8 D8 D8 08 08 D8 D8 D8 D8 D8 76 D8 B9 D8 D8 D8 90 90GRP 1 D8 D8 D8 D8 D8 08 08 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8GRP 5GRP D8 D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 D8 08 D8 D8 D8 D8 D8 D8 08 08 D8 D8GRP 6GRP 8187D8 08 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 D8 08 D8GRP 700 01 02 0304 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23CHANNEL NUMBER 5210
GR DO COO CBFPAGE DO ocoo OC08 OClO O.Cl8 oc20 OC28 oc30 OC38 oc40 OC48 oc50 OC58 OC60 OC68 oc70OC78 OC80 OC88 oc90OC98 OCAO OCA8 OCBO OCB8 521007 07 07 07 0707 07 07 07 07 07 07 07 07 07 07 07 07 17 07 07 07 07 07GRP 0 Table 6.7 Pad Memory 07 07 07 07 0707 07 07 07 07 07 07 07 07 07 07 07 07 37 07 07 07 17 17GRP 1 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07GRP 5 -GRP 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07 07GRP 6 07 07 07 07 0707 b7 07 07 07 07 0707 07 07 07 07 07 0707 07 07 07 37GRP 4 8187GRPTL-130200-1001 07 07 07 07 0707 07 07 07 07 07 0707 07 07 07 07 07 0707 07 07 07 07GRP 7 00 01 02 0304 05 06 07 08 09 10 11 12 13 14 15 16 17 18 19 20 21 22 23CHANNEL NUMBER M-223
TL-130200-1001 PAD MEMORY WORD LAYOUTCMMCMMPAD PADPAD -*km AB102 . . _.BITS 7, 6: interconnect memory steering bits. Bits 5, 4, 3: pad Information bits as follows: M-22481871 BITS 54DB lossNOTE: CMMA and CMMB are the ninth bit for control memory A and control memory B, respectively. Either bit set to true (1) indicates that the sample will be taken from the Interconnect memory; a bit set to false (0) indicates that the sample will be taken from the network information memory. 5210