NEC ND-70919 Bedienungsanleitung PDF herunterladen (Seite 201)

NEAX2000 IVS

ISDN System Manual

Page 190 ND-70919 (E), Issue 1.0

CHAPTER 5 OPERATION TEST

Interoffice Transmission Line Test

INTEROFFICE TRANSMISSION LINE TEST

To confirm inter-office synchronization and speech quality using “In-Service” transmission lines,

do the following procedure:

STEP 1: Connect the transmission line to the MDF or CONN card.

STEP 2: Make busy the channels except the channel tested by CME5.

STEP 3: Confirm indication lamps on the DTI/PRT/BRT card, as per the following table.

• Alarm Indications on 24DTI (Table 5-1)

• Alarm Indications on 30DTI (Table 5-2)

• Alarm Indications on 24PRT (Table 5-3)

• Alarm Indications on BRT (Ta ble 5-4)

STEP 4: Originate an outgoing call via trunk.

STEP 5: After an outgoing connection via trunks has been established, confirm inter-office

synchronization as follows:

• On the DTMF telephone set, keep pressing any dial button.

• Check to see if there are noise or abnormal tones.

• Do the above test again in the opposite direction.

STEP 6: Repeat the test for all channels. When completed, make idle all channels by CME5.

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NEC ND-70919 Bedienungsanleitung Seite 201