ADTRAN Switch FT1 DP User Manual

HDSL Quick Installation Guide  
for ADTRAN FT1 DP and FNID  
PRACTICES  
Three eight-position switch packs (SW1, 2, 4) and two four-position switch packs (SW3, 5) are used to configure  
FT1 DP mode of operation as listed in the table below. Refer to ADTRAN Installation/Maintenance practices for more  
information.  
Option Settings  
(arrows indicate default settings)  
Switch  
Function  
Description  
SW1-1 ............. Channel Select  
Closed ............. Alternate  
Selects between alternating and contiguous DS0 channels.  
Open ............... Contiguous  
SW1-2 ............. Auto Code Detect  
Closed ............. Auto  
When this switch is closed, the unit automatically detects the line code as B8ZS or  
AMI.  
Open ............... Manual  
SW1-3 ............. Manual Code Select  
Closed ............. AMI  
When SW1-2 is open, SW1-3 open selects B8ZS line code, while SW1-3 closed  
selects AMI.  
Open ............... B8ZS  
SW1-4 ............. Auto Frame Detect  
Closed ............. Auto  
Open ............... Manual  
When this switch is closed, Auto Frame Mode detection is enabled and the unit  
selects between SF and ESF modes automatically. When open, SW1-5 manually  
selects the framing mode.  
SW1-5 ............. Framing  
When SW1-4 is open, SW1-5 closed selects SF. SW1-5 open selects ESF.  
Closed ............. Superframe Format (SF)  
Open ............... Extended Superframe Format (ESF)  
This switch is used to enable or disable latching loopbacks.  
SW1-6 ............. Latching Loopback  
Closed ............. Enabled  
Open ............... Disabled  
SW1-7 is used to enable or disable automatic loopback timeout.  
Sets the data pattern sent to the customer upon FNID network loopback.  
SW1-7 ............. Loopback Timeout  
Closed ............. 20 Minutes  
Open ............... None  
SW1-8 ............. Loopback Keep Alive  
Closed ............. AIS  
Open ............... All 1s, framed  
The DS1 signal level delivered to the customer through the FNID may be selected  
as one of four values: 0, -7.5, -15, or -22.5 dB.  
SW2-8, 2-7...... DS1 Transmit Level  
Open, Open .... 0 dB  
Open, Closed.. -7.5 dB  
Closed, Open.. -15 dB  
Closed, Closed -22.5 dB  
When SW3-1 is closed, auto idle code detection is enabled and the unit selects  
between 7F (Hex) and FF (Hex).  
SW3-1 ............. Idle Code Detect  
Closed ............. Auto  
Open ............... Manual  
WhenSW3-1isopenandSW3-2isclosed, selectsFF(Hex). WhenSW3-2isopen,  
selects 7F (Hex).  
SW 3-2 ............ Idle Code  
Closed ............. FF  
Open ............... 7F  
This switch enables or disables A/B signaling for Channel 1-8 of the selected FT1  
channels.  
SW4-1-SW4-8 Channels 1-8 A/B Signaling  
Closed ............. Enabled  
Open ............... Disabled  
ThisswitchenablesordisablesA/BsignalingforChannels9-12oftheselectedFT1  
channels.  
SW5-1-SW5-5 Channels 9-12 A/B Signaling  
Closed ............. Enabled  
Open ............... Disabled  
FNID  
SW1, SW2  
20 mA, 60 mA  
SW1 DS1 SEALING CURRENT SW2  
POWER  
Sealing current disabled  
Sealing current enabled  
OFF  
ON  
20MA  
60MA  
LOCAL SPAN  
Off, On  
Indicates default setting  
20 mA sealing current select  
Powered Powered  
by -48  
VDC  
by span  
current  
61242.047L2-13A  
1
 

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