Mitel Sx 50 Dpabx Instructions Guide

Code State 
01 Idle 
02 Waiting for a Receiver 
03 Signaling 
04 Busy 
05 Reorder 
06 Camped on 
07 Held 
08 Waiting for Answer 
09 Talk 
OA Message Waiting 
OB t Calling Back Substates 
14 Wait for line Select 
(SUPERSET Telephone) 
see Signaling SUBSTATES below 
15 Busy Override 
16 Swap/call Forward 
2E Auto-answer 
2B Wait for trunk Release 
2c Wait for connection 
2D Connected  Troubleshooting Procedures and General Maintenance Information 
350 5-16 Signaling Substates 
19 System Administration 
IA...

A.1 There are two methods for measuring loop current: 
1. In-line measurement 
2. Voltage conversion measurement. 
The in-line method is the most accurate. The voltage conversion method can be used 
where it is undesirable or not possible to break the loop. 
. Proceed as follows: 
1. Open either the Tip or Ring lead by removing one of the bridge clips at the MDF. 
2. Connect the ammeter leads where the bridge clip was removed, restoring the loop 
circuit. 
3. Read the current when dial tone is present...

Troubleshooting Procedures and General Maintenance Information 
350 A-2 
Revision 0 
9104-091-350-NA Issue 5  

LOOP-START/GRO ND-START 
CHECK 
B.1 This test allows maintenance personnel to determine whether a trunk is a loop-start 
or ground-start circuit using only a Butt Set and a grounding lead. Proceed as 
follows: 
1. Locate the trunk circuit at the MDF 
2. Remove the bridge clips to disconnect the trunk from PABX. 
3. Connect the Butt Set across CO Tip and Ring. 
4. Go off-hook at the Butt Set. If dial tone is returned, CO trunk is loop-start. 
5. If no dial tone is returned, momentarily ground the Ring...

Troubleshooting Procedures and General Maintenance Information 
350 B-2 
Revision 0 
9104-091-350-NA Issue 5  

C.-l Any card or any other device found faulty must be returned with a Mite1 Repair Tag 
(see Figure C-l). The following information must be included on the repair tag: 
1. The date on which the device was returned. 
2. The location of the installation. 
3. The company name. 
4. The product name (e.g., SX-50). 
5. The system serial number. 
6. The software generic (e.g., -00-EO 1.4) 
7. The software revision (e.g., MS55-MRO-OO- 
8. The assembly part number of the item being returned. 
9. The assembly...

Troubleshooting Procedures and General Maintenance Information 
1. Date: 
2. Location: 
3. Company: 
5. System Serial No.: 
Revision: 
9. Alarm/Error Displsys: 
-- 
10. Trouble Symptom 
- 
- 
11. Failure Occurred A) During In5tsllalion 
S) In Service 
:: Further Details 
UTIORI: PLEASE ENSURE PCB ASSEMBLY IS 
RETURNED IN ANTISTATIC BAG. 
cc002 
mv. 
350 c-2 Revision 0 9104-091-350-NA Issue 5