CopperOptics 150-1306-01 Посібник - Сторінка 8
Переглянути онлайн або завантажити pdf Посібник для Мережеве обладнання CopperOptics 150-1306-01. CopperOptics 150-1306-01 12 сторінок. Isdn basic rate interface central office terminal channel unit
Друкувати сторінкуRevision 01
7.5
Verify operation. Verify incoming and outgoing calls for both B channels (where B1 is the
digitized voice channel and B2 is the data channel):
When verifying the B1 and B2 channels, only the B channel used for digitized
voice will have dial tone. The data channel does not have dial tone.
For the verify operation steps, use a Tektronic Craftec CT-100 ISDN type test set
(or equivalent) that can generate a PRBS/2047 pattern to perform a data Bit
Error Rate Test (BERT) when the circuit connects to the far end. This is the
most stressful pattern for ISDN circuits. A test result that does not exceed 10
Bit Error Rate (BER) must be demonstrated.
7.5.1
Outgoing calls. Verify outgoing calls for both B channels (i.e., calls from the NT1 to the LT per
Figure 2):
1
Originate an outgoing B1 voice call and make sure that:
_
dial tone is present
_
the number you called is displayed (when answered)
_
the number from which you called is displayed as the originating number
2
Hold up the B1 voice circuit, then switch to the B2 data circuit.
3
Originate an outgoing B2 data call to the data loopback (LPBK) test line and perform the BER
test (after the data call is established).
4
After the B2 data test is completed, drop the B2 data line, then drop the B1 voice line.
5
Return all circuits to normal.
7.5.2
lncoming calls. Verify incoming calls for both B channels (i.e., calls from the LT to the NT1 per
Figure 2):
1
To test an incoming B1 voice call:
_
draw dial tone from another ISDN or POTS circuit
_
dial the ISDN B1 voice circuit number
_
verify that the number you called is displayed (when answered)
_
verify that the number from which you called is displayed as the originating number
2
Hold up the B1 voice circuit, then switch to the B2 data circuit.
3
Originate an outgoing call on the B2 data circuit using another ISDN data circuit and call the B2
data circuit under test. Then, perform the BER test.
4
Drop the B2 data line after the B2 test is completed. Then drop the B1 voice line.
5
Return all circuits to normal.
Page 6
June 9, 1997
PairGain Engineering - Plant Series
Section 363-706-100
-7
PG-Flex FLC-706