JOBAID
FOR COMPLETE I&M PRACTICE 877.457.5007
DOCUMENT # 094
HAVE YOUR FAX NUMBER AVAILABLE
TR ISDN
CLEI:DDRPLRC1AA
DEPLOYMENT GUIDELINES
TOTAL REACH SC PAM SIDE
Maximum Loop Loss .......................46 dB @ 20 kHz using a 135 ohm termination
52 dB @ 28 kHz using a 135 ohm termination
Maximum Noise................................34 dBrn using a 135 ohm termination with a 50 kB filter
Maximum DC Resistance.................2000 ohms
Maximum Single Bridged Tap...........2 kft
Maximum Total Bridged Tap..............6 kft
Maximum # of Bridged Taps..............3
Nominal Voltage.................................-130 VDC from TIP (GND) to RING (-130 v)
Note:Bridged Tap length must be included as part of the total loop length.
U-INTERFACE SIDE
Maximum Loop Loss .......................42 dB @ 40 kHz using a 135 ohm termination
Maximum Noise................................33 dBrn using a 135 ohm termination with a 50 kB filter
Maximum DC Resistance.................1300 ohms
Maximum Single Bridged Tap...........3 kft
Maximum Total Bridged Tap..............6 kft
Maximum # of Bridged Taps..............3
Voltage.................................-48 VDC from TIP (GND) to RING (-48 v)
T400 EDGE CONNECTOR PIN ASSIGNMENTS
55 TIP, U-Interface
49 RING, U-Interface
47 RING, Total Reach Interface
41 TIP, Total Reach Interface
27 Frame GND
11 Frame GND
Note:ISDN connections are not polarity sensitive
STATUS LEDs
NT1 I/F ● ON Indicates a loss of signal from or synchronization
with the 2B1Q BRI interface towards customer’s
NT1.
✷ FLASHING Once per second indicates receipt of a Near End
Block Error from the 2B1Q BRI interface.
TRI I/F
● ON Indicates a loss of signal or synchronization with
the TRI-C (Total Reach ISDN CO) unit
✷ FLASHING Once per second indicates receipt of a Near End
Block Error from the TRI-C unit
LOOPBACK
● ON Indicates the TRI-R unit is in a 2B+D loopback
✷ FLASHING Oncer per second for B1 loopback, twice per second
for B2 loopback
ACT
● ON Indicates the terminal equipment has exchanged
ACT bits with the ISDN switch
✷ FLASHING Once per second indicates that the ACT bit is being
sent from only the terminal equipment (CPE)
OPTIONS
■ S1-1 SX
ON Default and normal condition. Provides between 4 to 10 mA of sealing
current toward the customer’s NT1/TA.
OFF Disables sealing current to the customer’s NT1/TA.
■ S1-2 TEST
ON Used for factory test only.
OFF Default and operational mode.
COMPATIBILITY
