 T1 Interface
Compliance:
AT&T TR-62411, ANSI T1.403
CCITT Rec. G.703, G.704
Framing: D4, ESF
Data Rate: 1.544 Mbps
Line Code: AMI
Impedance: 100 W, balanced
Zero suppression:
Transparent, B7ZS, B8ZS
Signal Levels:
Receive:
0 to -40 dB wi th CSU
0 to -10 dB wi thout CSU
Transmit:
0 dB, -7.5 dB, -15 dB with CSU
3V, �10% soft-adjustable to be measured at 0 to 655 ft
without CSU
Jitter Performance:
As per AT&T TR-62411
Connector: 15-pin D-type, female
E1 Interface
Compliance:
Rec. G.703, G.704, G.732
Framing:
With CRC-4: TS0 MF, CAS
With CRC-4: TS0 MF, CCS
Without CRC-4, CAS: TS16 MF
Without CRC-4, CCS: no MF
Data Rate: 2.048 Mbps
Line Code: HDB3
Impedance: 120 W, balanced 75 W, unbalanced
Signal Level:
Receive:
0 to -40 dB wi th LTU
0 to -10 dB wi thout LTU
Transmit:
Balanced: �3V, �10%
Unbalanced: �2.37V, �10%
Jitter Performance:
As per CCITT G.823
Connectors:
15-pin D-type, female, for balanced
Two BNC coaxial, for unbalanced
GENERAL
Timeslot
Mapping
Any timeslot to any timeslot with/without A-law/m-law and
signaling conversion per timeslot
Timing
TCLK-A, TCLK-B, System Clock
Source:
Internal timing ( �32 ppm)
Receive clock link A (LBT-A)
Receive clock link B (LBT-B)
Elastic
Buffer
Buffer length: �
1 frame
Underflow: 1 frame repeated
Overflow: 1 frame skipped (No frame sync loss for buffer
overflow or underflow)
Data delay: up to 375 msec
Unused
Timeslot Code
T1 interface: user defined
E1 interface: user defined
Diagnostics
Local T1 or E1 loopback
Remote T1 or E1 loopback
Code activated network loopback per ANSI T1.403
Statistics
T1 ESF performance monitor:
ANSI T1.403 full support
AT&T 54016 local support
Transparent FDL between two T1 ports
E1 CRC-4 performance monitor:
Per CCITT G.706
Alarm
Response (both directions)
Received impairment on link A:
Loss of signal/frame, yellow alarm
Transmit response on link A (in loss of signal/frame):
yellow alarm
Transmit response on link B (on connected TS):
DS-0 OOS pattern, OOS A, B signaling
Front Panel
Controls
LCD: 2 rows x 16 characters
Push buttons: cursor, scroll, enter
Supervisory
Port
Interface: V.24/RS-232, async
Connector: 9-pin D type, female
Data Rate: 300-9600 bps, autobaud
Indicators
Local sync loss: link A, link B
Remote sync loss:link A, link B Test
Physical
Height: 4.4 cm / 1.7 in (1U)
Width: 21.6 cm / 8.4 in
Depth: 24.0 cm / 9.5 in
Weight: 1.4 kg / 3.1 lb
Power
115/230 VAC ( �10%)
47-63 Hz, -48 VDC (�10%), 15 watts
Environment
Temperature: 0-50 o
C/32-122
o F
Humidity: Up to 90%, non-condensing
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