Руководство по эксплуатации ADTRAN SHDSL E1

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Section 61225236L1-5A
Issue 1, August 2003
T200 SHDSL T1/E1 Network Terminating Unit
Installation and Maintenance Practice
CONTENTS
1. General ................................................................... 1
2. Description ............................................................. 1
3. Installation.............................................................. 2
1225236L1
4. Provisioning ........................................................... 4
5. Operation............................

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Features 2. This device must accept any interference received, The features of the SHDSL T1/E1 NTU, P/N including interference that may cause undesired 1225236L1, include the following: operation. Changes or modifications not expressly approved by • Responds to an Embedded Operations Channel ADTRAN could void the user’s authority to operate this (EOC) inventory response message equipment. • Timing source is derived from the received SHDSL network signal Table 1. Compliance Codes • Local m

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Shipping Contents When the module is installed in any of the NTU enclo- The contents include the following items: sures, all connections are made through the enclosure backplanes. Ensure chassis ground is properly • SHDSL T1/E1 NTU connected for either standalone or chassis-mounted • SHDSL T1/E1 NTU Installation and Maintenance applications. Practice The SHDSL T1/E1 NTU is designed for a T200 or T400 type form factor housing and inserts into the customer CAUTION T1 or E1 T200 type equipm

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Table 3. Front Panel LEDs LED Indication Description PWR Off The module is powered off Green The module is In Service SHDSL Green SHDSL loop is trained with good signal quality Yellow SHDSL loop is trained with poor signal quality Red SHDSL loop is not trained T1/E1 Off Port is active with alarms Green Port is active with no alarms TEST Off Module is not in loopback or BERT Green Local loopback is active or BERT is running with no errors Yellow BERT is running with bit errors Red BERT is runni

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5. OPERATION Customer Port The SHDSL T1/E1 NTU operates in either E1 mode or Test Capabilities T1 mode. The SHDSL T1/E1 NTU has the following test capabil- ities: E1 Mode In E1 mode the port features are as follows: • Self diagnostics • Carries information at the rate of 2.048 Mbps • Local loopbacks • Uses CCS framed format with or without CRC-4 • EOC initiated remote loopbacks • Operates in either Alternate Mark Inversion (AMI) • Inband remote loopback detection (E1 mode only) or High-Dens

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Table 4. Configuration Options List Category Option Setting Default Unit Options Data Mode For Data Type = T1, Data Rate can Data Type = T1 be from 3 to 24 time slots (i.e. 200 kbps to 1.544 Mbps) For Data Type = E1, Data Rate can Data Rate = 24 be from 3 to 32 time slots (i.e., 192 kbps to 2.048 Mbps) Local Management 1 = Disabled Enabled 2 = Enabled Restore Factory Defaults Firmware Upgrade Change Password SHDSL Options SES CVC Threshold 0 to 255 CVC’s 50 SNR Margin Alarm 0 = Disabled Disabl

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Table 4. Configuration Options List (Continued) Category Option Setting Default E1 Options (E1 Mode Only) Line Coding 1 = AMI HDB3 2 = HDB3 Framing Mode 1 = Unframed CCS 2 = CCS 3 = CCS w/CRC-4 Idle Pattern 00h to FFh FFh ISDN - PRA V3 (CCS or 1 = Disabled Disabled CCS w/CRC-4 Mode Only) 2 = Enabled Test options Loopback Timeout 0 = Disabled Disabled 1 to 999 Minutes = Timeout BERT Pattern 1 = ALT 2e15 – 1 2 + 2047 3 = 2e15 – 1 4 = QRSS BERT Pattern Polarity 1 = Normal Normal 2 = Inverted Inban

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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 con

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10 Issue 1, August 2003 61225236L1-5A