ADTRAN 1225236L1, Установка и эксплуатация

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61225236L1-5A Issue 1, August 2003 9
6. MAINTENANCE
The SHDSL T1/E1 NTU requires no routine mainte-
nance for normal operation.
ADTRAN does not recommend that repairs be
attempted in the field. Repair services may be obtained
by returning the defective unit to ADTRAN. Refer to
the
Warranty and Customer Service section for further
information.
7. SPECIFICATIONS
Specifications for the SHDSL T1/E1 NTU are detailed
in
Table 7 .
8. WARRANTY AND CUSTOMER SERVICE
ADTRAN will replace or repair this product within the
warranty period if it does not meet its published specifi-
cations or fails while in service. Warranty information
can be found at
www.adtran.com/warranty .
Table 6. T1 Port Statistics Definitions
Statistic Framing Mode Definition
Errored Seconds (ES) Unframed LOS condition or BPV’s > 0
SF LOS or LOF condition, or if BPV’s > 0 or FE’s > 0
ESF LOS or LOF condition, or if BPV’s > 0 or FE’s > 0
Severely Errored Seconds (SES) Unframed LOS condition or BPV’s > 1544
SF LOS or LOF condition, or if BPV’s > 1544 or if FE’s > 8
ESF LOS or LOF condition, or if BPV’s > 1544 or if FE’s > 8
Unavailable Seconds (UAS) N/A If 10 continuous SES’s, then UAS
If 10 continuous seconds with no SES’s, then no UAS
Code Violations Count (CVC) Unframed If BPV’s > 0
SF If BPV’s > 0 or FE’s > 0
ESF If BPV’s > 0 or FE’s > 0
Table 7. SHDSL T1/E1 NTU Specifications
Environmental
Operating Temperature:
Storage Temperature:
Relative Humidity:
Maximum Current Draw:
Maximum Heat
Dissipation:
–0°C to 55°C
–40°C to 85°C
90 percent maximum @
50°C, noncondensing
0.074 A maximum
@
Ð
48 VDC
3.55 watts
Physical
Dimensions:
Weight:
5.625 in. H x .625 in. W x
6.0 in. D
< 1 lb.
Part Number
SHDSL T1/E1 NTU
Module:
1225236L1