Telect’s ELF System is a small “edge” connection system for use in locations where equipment density — maximum
density with simplied monitoring — is important. The ELF System is ideal for a 3G, 4G, LTE wireless network at
a base transceiver station (BTS), customer premises, controlled environment vault, co-location, or at any remote
network terminal.
All ELF Systems consists of a chassis, wall brackets, or wall enclosures with DSX-1, DNI, DSX-3,
Fiber, and/or Ethernet/Data modules:
• ELF Chassis t equipment cabinets, 19-in. or 23-in. EIA/WECO racks, or Telect’s Wall-Mount ELF Chassis
Bracket. Each 1RU (1RU = 1.75 in.) chassis handles up to three, rear- and/or front-access ELF modules.
DSX-1, DSX-3, ber, and other ELF modules can be mixed in the same chassis.
• Single-Module ELF Wall Brackets mount to the walls. Each bracket accommodates one total front-access
ELF module
• Single-Module ELF Wall enclosures include a lockable access door. The enclosure mounts to the wall and
accommodates one rear- and/or front-access ELF module. Ideal for a Fiber ELF module.
All chassis, brackets, and enclosures include shield ground pins for ITU G.703 compliance. ELF
modules are passive devices and do not require power. All chassis, enclosure, brackets, and
modules are mainly black.
1.2 ELF Modules
The cover shows a composite of all ELF modules and mounting options.
The following identies all ELF DSX1, DSX3, ber, and signal-manager modules offered by Telect, along with
section and page references. Mounting options (chassis and wall mount) are covered in this section.
Telect’s Wall-Mount ELF Chassis Bracket is designed
to hold one ELF Chassis (ELF-0000-2400) against a
wall or side of a cabinet. The chassis bracket allows
an ELF chassis with either rear- and/or front-access
modules to either extend from a wall or cabinet using
a minimum wall “footprint” or to hug the wall or cabinet
with a minimum prole. Wall-mounting hardware is
Typical wall installations are shown in the following illustrations. Telect recommends that the tie bar on the rear
of the ELF Chassis be removed when installing in the Wall-Mount ELF Chassis Bracket. Also, when installing
rear access ELF modules, Telect recommends including a minimum 2-ft (600-mm) service loop for any cabling or
wiring intended for the rear of the ELF module(s). Don’t forget to install a ground wire on the ELF Chassis, as
Wall-mount bracket for one, total front access ELF module (ELF-3006-1100, ELF-3006-1800, ELF-3004-1800, or
ELF -0005-0001). Wall-mounting hardware is not included.
Note: Dimensions are in in. (mm)
2.25 (57.2)
4.00 (101.6)
4.50 (114.3)
6.00 (152.4)
4.50 (114.3)
1.78
(54.2)
1.00 (25.4)
Figure 7 - ELF Wall Bracket Dimensions
The following illustration shows a typical installation.
Wall-mount enclosure, designed initially for one ber
ELF module, accommodates any rear-and/or
front-access ELF module. Model ELF-000-0800
includes a lockable access door, ideal for co-locations.
Wall-mounting and grounding hardware are not included.
The following illustration shows a typical installation.
• Fiber Optic Splice/Patch Modules: Manage modest ber count bundles being delivered to base stations in
high-capacity wireless networks.
• DSX-3 Modules: Deliver advanced services outward to the edge of the network, whether wireless or wireline.
• DSX-1 Modules: Gain industry-leading density and options for T1/E1 signal management at the network’s edge.
• RJ-TJ Patch Module: In remote HUTs, CEVs, and cabinets, takes T1/Ethernet equipment interface from
inaccessible rear connection to front of equipment rack.
• T1 Interconnect RJ45 Modules: Ideal for handoff applications in customer premise environments.
1.5 Installation Considerations
CAUTION
!
CAUTION! Only qualied technicians may install and maintain this product.
ALERT
!
ALERT! These instructions presume you have veried that the Telect equipment being installed is
compatible with the rest of the system, including power, ground, circuit protection, signal characteristics,
equipment from other vendors, and local codes or ordinances.
1.5.1 Location and Space
• The ELF Chassis mounts in a 19 in. or 23 in. equipment rack (EIA or WECO) or inside an equipment cabinet.
On an EIA rack, it takes up one RU of space (1RU = 1.75 in.).
• The Wall-Mount ELF Chassis Bracket requires approximately 20 in. (503 mm) by slightly more than 2 in. (52
mm) if a minimum wall “footprint” is desired. If hugging the wall, reserve approximately 20 in. by 8.25 in. (210
mm) of space.
• The ELF Wall Bracket requires approximately 6 in. (155 mm) by approximately 2 in. (45 mm) or 4 in. (102
mm) of wall space, depending on mounting orientation.
• The ELF Wall-Mount Enclosure requires approximately 10 in. (255 mm) by approximately 7 in. (180 mm) of
wall space.
1.5.2 Tools and Equipment
• common hand tools
• wire-wrap tools for pinelds
• a chassis ground wire—14 AWG minimum with ring terminal
Use listed components (UL-recognized, CSA, ETL, TUV agency) and crimping tools.
Compare the contents of the ELF shipping container(s) with the packing list. Call Telect if you are missing anything.
Telect is not liable for shipping damage.
If the shipping container is damaged, keep it for the carrier’s inspection. Notify the carrier and call
Telect at 1-509-926-6000.
Keep the container until you have checked equipment operation. If you experience any kind of
problem, call Telect’s Customer Service Department. Use the original, undamaged container if
you are instructed to return the ELF equipment to Telect.
1.5.4 Technical Support (USA)
Please read and understand all instructions before starting installation. If you have questions, contact Telect
Technical Support at [email protected] or call 1.509.926.6000.
When you receive the equipment, carefully unpack it and compare it to the packaging list. Please report any
defective or missing parts to Telect Quality at [email protected] or call 1.509.926.6000.
Telect is not liable for transit damaged. If the product is damaged, please report it to the carrier and contact
Telect Quality.
1.6 Specications
Table 1 - DS1 Electrical
E1 SpecicationT1 Specication
Return Loss12 dB 51 kHz to 102 kHz
18 dB 102 kHz to 2048 kHZ
14 dB 2048 kHz to 3073 kHz
Insertion Loss0.5 dB at bit rate (2.048 Mbps)0.5 dB at bit rate (1.544 Mbps)
Monitor Level–20 dB ± 1.5 dB at bit rate (2.048
Mbps)
Contact Resistance<0.01 Ohms
Characteristic Impedance100/120 Ohms
Adjacent Channel Crosstalk-60 dB at bit rate (2.048 Mbps)-60 dB at bit rate (1.544 Mbps)
Interchannel Crosstalk-60 dB at bit rate (2.048 Mbps)-60 dB at bit rate (1.544 Mbps)
Telect offers ve DSX-1 and two DNI-1 ELF Modules:
• All three ELF DSX-1 8-Termination Modules feature network element RJ45, BNC, or wirewrap connections on
the rear and Telect’s Bantam patch/monitor jacks and wire-wrap crossconnections on the front.
• Both ELF DSX-1 6-Termination Modules are total front access modules. Wire-wrap network element, wire-wrap
cross-connections, and Bantam patch/monitor jacks are all on the front.
• Both ELF DNI-1 4-Circuit Modules contain RJ48C termination on the front along with 4 sets of Bantam
patch/monitor jacks for the NE interconnections. One DNI-1 module is total front access with all Bantam
interconnections between RJ48C NE-1/NE-2 terminations; the other module interconnects four NE-2 RJ48C
termination on the front with wire-wrapped NE-1 termination on the rear.
Eight-circuit network element I/O wire-wrap pineld on the rear and corresponding cross-connect pineld and
Bantam-style patch and monitor jacks on the front. Both pinelds provide individual shield grounds for each set of
jacks. Screws for mounting module to an ELF chassis or lockable wall-mount enclosure are included.
Eight-circuit network element BNCs on the rear and corresponding cross-connect pineld and Bantam-style patch
and monitor jacks on the front. Pineld provides shield grounds for each circuit. Screws for mounting module to an
ELF chassis or lockable wall-mount enclosure are included.
Eight-circuit network element RJ48Cs on the rear and corresponding cross-connect pineld and Bantam-style
patch and monitor jacks on the front. Pineld provides shield grounds for each circuit. Screws for mounting
module to an ELF chassis or lockable wall-mount enclosure are included.
Six-circuit NE I/O and cross-connect pinelds and Bantam-style patch and monitor jacks are all on the front. Both
pinelds provide individual shield grounds for each set of jacks. Screws for mounting module to an ELF chassis,
wall-mount bracket, or lockable wall-mount enclosure are included.
Six-circuit network element and cross-connect RJ48Cs, along with Bantam-style patch and monitor jacks, are
all on the front. Screws for mounting module to an ELF chassis, wall-mount bracket, or lockable wall-mount
enclosure are included.
Note: Dimensions are in in. (mm)
6-Termination Module
DSX-1 Bantam
Jacks
Jumper
Tie-Down Bar
MON
OUT
IN
Circuit Designation
Label
Cross-Connect RJ48C Jack Field
Network Element RJ48C Jack Field
1.63
(41.3)
4.25
(108.0)
0.55
(13.9)
Figure 19 - Model ELF-3006-1800 Dimensions
R2
R1
RE SISTOR VALUE = 475 ohm
REFERENCE SCHEMATIC
(TYPICAL FOR ALL CIRCUITS)
Top View
1
2
3
4
5
6
7
8
5.11 (129.7)
5.86 (148.8)
X-CON
OUT
R
1
T
2
3
IN
R
4
T
5
6
7
8
RJ SHIELD GND.
Figure 20 - Model ELF-3006-1800 Reference Schematic
This ELF DNI-1 4-Circuit Module contains 4, NE-1 wire-wrap termination on the rear. 4, NE-2 RJ48C
termination are on the front along with 4 sets of Bantam-style patch and monitor jacks for interconnections and
testing. Shields for all cable connectors are connected internally to chassis ground along with a shield ground
pin for the wire-wrapped NE-1 cable. Screws for mounting module to an ELF chassis or lockable wall-mount
enclosure are included.
The ELF DNI-1 4-Circuit Total Front Access Module contains 4, NE-1 and 4, NE-2 RJ48C terminations on the front
along with 4 sets of Bantam-style patch and monitor jacks for interconnections and testing. Shields for all cable
connectors are connected internally to chassis ground. Screws for mounting module to an ELF chassis, wall-mount
bracket, or lockable wallmount enclosure are included.
Note: Dimensions are in in. (mm)
DNI-1 Bantam
Jacks
Interconnect Jumper
Tie-Down Bar
4-Circuit Interconnect Module
Circuit Designation
Label
NE-2 RJ48C Jack Field
Figure 23 - Model ELF-3004-1800 Dimensions
R2
MON
OUT
IN
MON
R1
R2
R1
1.63
(41.3)
NE-1 RJ48C Jack Field
RE SIS TOR VALUE = 475 ohm
4.25
(108.0)
0.55
(13.9)
Top View
5.11 (129.7)
5.86 (148.8)
REFERENCE SCHEMATIC
(TYPICAL FOR ALL CIRCUITS)
8
7
6
IN
5
OUT
T
R
T
R
4
3
2
1
RJ SHIELD
GND.
NE-1
OUT
IN
Figure 24 - Model ELF-3004-1800 Reference Schematic
Telect offers two DSX-3 ELF Modules. Both feature 6-port mini-WECOs for temporary I/O and cross-connect
patching, testing, and monitoring, along with BNC connectors for normal NE I/O and cross-connections:
• ELF 2-Termination DSX-3 (Model ELF-3206-1200) has the NE BNCs on the rear, and
• ELF 1-Termination DSX-3 (Model ELF-3206-1900) is total front access (TFA).
Both modules t the ELF chassis and Lockable Wall-Mount Enclosure. Mounting screws for
installing on the chassis or enclosure are included.
The module consists of a splice cassette mounted atop a subunit entrance compartment. (See the following
illustrations.) The splice cassette is covered by a transparent plastic cover.
Telect manufactures three multi-purpose signal manager modules for RJ45C and pin-block signals.
All signal manager modules are straight feed-through:
• The ELF RJ45C to RJ45C Patch Module (Model ELF-9716-1900) contains 16 RJ45C connectors on the rear
which interconnect with 16 RJ45C connectors on the front. The module ts the ELF chassis and lockable
wall-mount enclosure.
• The ELF RJ45 to IDC Patch Module (Model ELF-9716-1700) contains 16 RJ45 connectors on the front which
interconnect to T568A-coded IDC punch-down blocks for 100-Ohm cable on the rear. The module ts the ELF
chassis and lockable wall-mount enclosure.
• The ELF 12 x 4 Alarm Pin Block Module (Model ELF-0005-0001) is a bulkhead pin block primarily intended for
interconnecting alarm signals. ELF-0005-0001 ts the ELF chassis, the wall-mount bracket, and the lockable-
wall-mount enclosure.
Mounting screws for installing on the chassis, bracket, or enclosure are included.
CAUTION! Only qualied technicians may install and maintain this product.
6.1 Owner Maintenance
Telect’s ELF chassis, enclosures, and modules do not need preventive maintenance
6.2 Service
Contact Technical Support (USA):
By e-mail: [email protected]
By phone: 888-821-4856 or 509-921-6161
6.2.1 In-Warranty Service
Contact your Telect equipment distributor, or call a Telect Customer Service Representative:
1-509-926-6000
Telect will repair or replace defective products within the limits of the warranty. See “Repacking for Shipment” in
this section.
Call a Customer Service Representative for a Return Material Authorization (RMA) before returning any equipment.
6.2.2 Out-Of-Warranty Service
The procedure for out-of-warranty service is the same as for in-warranty service, except that Telect charges a
processing fee, and you must submit a Purchase Order along with a Return Material Authorization (RMA) before
returning equipment. Call a Customer Service Representative for help getting these forms.
The processing fee guarantees a repair estimate and is credited against actual material and labor costs.
6.3 Repacking For Shipment
1. Tag the equipment showing owner’s name, address, and telephone number, together with a detailed
description of the problem.
2. Use the original shipping container if possible. If you do not have it, package the equipment in a way to
prevent shipping damage. Include the RMA inside the container and legibly print the RMA number on the
outside of the package, near the shipping address