Juniper networks DUAL-PORT T1-E1 GPIMS, QUAD-PORT T1-E1 GPIMS User Manual
DUAL-PORT AND
QUAD-PORT T1/E1
GPIMS
DATASHEET
Product Overview
Dual-port and quad-port T1/E1 GPIMs
are used with the Juniper Networks
SRX650 Services Gateway, providing
high density for broadly deployed T1/
E1 network connections while making
eective use of the SRX650 modular
interface slots. Integrated channel
service unit/data service unit (CSU/
DSU) eliminates the need to deploy
a separate external device, saving
valuable space and simplifying
management.
Product Description
The Juniper Networks® dual-port and quad-port T1/E1 Gigabit-Backplane Physical Interface
Modules (GPIMs) provide the physical connection to T1 or E1 network media types and include
integrated CSU/DSU. Juniper’s dual-port and quad-port T1/E1 GPIMs forward packets for
processing and at the same time perform framing and line-speed signaling.
Features and Benefits
Juniper ’s dual-port or quad-port T1/E1 GPIMs provide the following benefits:
• Dual-port form factor that provides high density for broadly deployed T1/E1 network
connections, while making effective use of the Juniper Networks SRX650 Services
Gateway modular interface slots
• Integrated CSU/DSU that eliminates the need to deploy a separate external device,
saving valuable space and simplifying management
Features
The quad-port and dual-port T1/E1 Gigabit-Backplane Physical Interface Module (GPIM)
provides the following common key features for both T1 and E1 modes:
• Integrated CSU/DSU to eliminate the need for a separate external device
• Supports fractional T1/E1 connections in both 56 Kbps and 64 Kbps operating modes
• Independent internal and external clocking option
• Alarm reporting with a 24-hour history maintained
• Loopback (local and remote) and bit error rate test/pseudo-random binary sequence
(BERT/PRBS) diagnostics
• Multilink Frame Relay and Multilink Point-to-Point Protocol (PPP) support
• MTU size of 9,000 bytes (maximum)
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SRX-GP-DUAL-TI-E1 SRX-GP-QUAD-TI-E1
Specifications
Product Specifications
Table 1: Dual-Port and Quad-Port T1/E1 GPIM Network Interface Specifications
FEATURE T1 MODE E1 MODE
Network Interface Specifications
Line encoding AMI/B8ZS HDB3
Mode Framed clear channel Framed clear channel (64 Kbps)
Unframed clear channel
Fractional framing Superframe (D4/SF)
Extended superframe (ESF)
High-Level Data Link Control (HDLC) Features
N x 64 Kbps or N x 56 Kbps, non-channelized
data rates (fractional T1/E1 support)
Cyclic redundancy check (CRC) 16/32 16/32
Shared flag Supported Supported
Idle flag/fill Supported Supported
Counters Runts, giants, frame check sequence (FCS),
(T1: N=1 to 24) (E1: N=1 to 31)
error, abort error, align error
G704
G704 with no CRC4
G703 unframed
Runts, giants, FCS, error, abort error, align error
Data Interface
• Clocking Modes: DCE, internal, loop
• Clocking Rates: 1.2 KHz, 2.4 KHz, 9.6 KHz, 19.2 KHz, 38.4 KHz,
56.0 KHz, 64.0 KHz 72.0 KHz, 125.0 KHz, 148.0 KHz, 250.0 KHz,
500.0 KHz, 800.0 KHz, 1.0 MHz, 1.3 MHz, 2.0 MHz, 4.0 MHz,
8.0 MHz
Interface Connector
• RJ-48
• System timing
• Internal (system clock)
• External (network recovered clocks)
Dimensions and Weight (W x H X D)
Dual Port T1/E1 GPIM
• 6.72 x 0.78 x 8.1 in (170.8 x 19.8 x 205.7 mm)
• 15.4 oz (0.44 kg)
Quad Port T1/E1 GPIM
• 6.72 x 0.78 x 8.1 in (170.8 x 19.8 x 205.7 mm)
• 15.4 oz (0.44 kg)
Environmental
• Operating temperature: 0° to 40° C
• Storage temperature: -40° to 70° C
• Relative humidity: 5% to 90% noncondensing
Diagnostics
Loopbacks
• Local, remote, payload
Test Patterns (BERT)
• All ones
• All zeros
• Alternating ones and zeros (AA/55)
• 1:3 or 1 in 4 pattern
• 1:7 or 1 in 8 pattern
• 3:24 (3 bits set in every 24 bits)
• QRSS20 (modified PRBS 2^20-1, with 14 zero suppression)
• PRBS 2^7-1
• PRBS 2^9-1 (as specified in ITU-T O.153)
• PRBS 2^11-1 (as specified in ITU-T O.153)/2047 pattern
• PRBS 2^15-1 (as specified in ITU-T O.151/O.153)
• PRBS 2^20-1 (as specified in ITU-T O.153)
• Programmable word or 32-bit programmable pattern
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