RJ11/12/45 & TAE Shielded & unshielded | Cat.3 to Cat.6A Patch cables & structured cabling |
TK Cables & Connectors
TK cables connect terminal equipment (phones, fax, DECT base stations) to connection boxes, patch panels and telephone systems. RJ11 cables (4-pin, 6P4C) are used for analogue telephone connections and modem connections; RJ12 cables (6P6C) provide two additional conductors for ISDN bus lines or powering terminals. RJ45 patch cables to TIA-568-B and ISO/IEC 11801 in classes Cat.5e to Cat.6A are standard in structured office cabling for VoIP phones. In industrial environments, shielded variants (S/FTP, SF/UTP) are often used to suppress interference from motor frequencies and control cabinets. TAE connection cables connect TAE outlets to analogue terminal equipment per the German building installation standard. |
Top sellers in Cables / Connectors / Adaptors
APC Rack PDU 2G,2.286,65 EUR
DIGITUS AK-770905-100-S Velcrotape roll 10x15x2.6 mm black
9,83 EUR
Cable W.-St. RJ45 (8/4) - W.-St. RJ11 (6/4) 3 m (Bulk)
12,25 EUR
Cable untangler for telephonecable transparent
6,17 EUR
Telco Patch Panel, Cable 2m,45G, 1xST (Centronics) /
24xRJ45
244,20 EUR
Lenovo DisplayPort Video Cablefor Audio/Video Device,
Monitor, TV - 2 m
13,45 EUR
Rutenbeck 681072 ISDNtermination resistor
100-Ohm individual
0,31 EUR
SENNHEISER CLS 0128,80 EUR
Startech.com ST121HDBTPW HDMIover Cat5e/CAT6 video
extender with Power
358,43 EUR
TK cable headphone cable(spiral) 2 m, Synergy 21,
0,72 EUR
Cables / Connectors / Adaptors from 3Sixt
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3Sixt 38800 Micro-USB sync/charging cable for many Android and Windows devices
This particularly flexible USB 2.0 cable with textile coating and micro-USB metal connectors connects many common tablets, smartphones, cameras and hand-held consoles with a PC/MAC or USB charger. The ... Lieske Part No.: 1792684 Mfg Part No: 38800 |
9,99 EUR
![]() ≈ £8.37 | ≈ $11.22
in stockinfo_outline
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Cables / Connectors / Adaptors from APC
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APC Rack PDU 2G, Metered-by-Outlet, ZeroU, 32A, 230V, (21) C
APC Metered by Outlet power distribution units optimize energy use and protect circuits by collecting measurements at each outlet. Current measurements enable real-time remote monitoring of connected ...Lieske Part No.: 790354 Mfg Part No: AP8453 |
2.905,10 EUR
![]() ≈ £2,434.47 | ≈ $3,262.43
Made to order · Delivery time approx. 20 workdaysinfo_outline
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APC Rack PDU 2G, Metered-by-Outlet, ZeroU, 16A, 100-240V, (2
APC Metered by Outlet power distribution units optimize energy use and protect circuits by collecting measurements at each outlet. Current measurements enable real-time remote monitoring of connected ...Lieske Part No.: 534510 Mfg Part No: AP8459WW |
2.286,65 EUR
![]() ≈ £1,916.21 | ≈ $2,567.91
Made to order · Delivery time approx. 20 workdaysinfo_outline
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APC IT Power Distribution Module 3 Pole 5 Wire 63A IEC309 320cm
A touch-safe Power Distribution Module (including circuit breaker, power cord, power connection, and circuit monitoring) that eliminates the need for hot work or shutdowns during expansion of the ...Lieske Part No.: 768552 Mfg Part No: PDM3563IEC-320 Type: ACCS |
1.923,75 EUR
![]() ≈ £1,612.10 | ≈ $2,160.37
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Cables / Connectors / Adaptors from DELOCK
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DELOCK cable SFF-8643 -> and 2 SFF-8639 + SATA 15Pin 0.50m
SFF8643 > SFF8639 + SATA 15 Pin Strombuchse, 50cm, bis 2 GB/sLieske Part No.: 182788 Mfg Part No: 84819 |
53,34 EUR 53,35 EUR
![]() ≈ £44.70 | ≈ $59.90
Delivery time from supplier's stock (ca.) 9 workdaysinfo_outline
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Cables / Connectors / Adaptors from DIGITUS
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DIGITUS AK-770905-100-S Velcro tape roll 10x15x2.6 mm black
Ideal for use when cables, lines, pipes, hoses, etc. need to be fixed, bundled or fastened more often.HighlightsDIGITUS Velcro tape on a roll 10 m x15 mm x 2.6 mmSoft and flexible material ... Lieske Part No.: 1606353 Mfg Part No: AK-770905-100-S |
9,83 EUR
![]() ≈ £8.24 | ≈ $11.04
Delivery time from supplier's stock (ca.) 24 workdaysinfo_outline
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Cables / Connectors / Adaptors from Digium
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Digium 1A4A04F 4 Port 2-FXS / FXO-2 PCI Card with EC
Digium 1A4A04F 4 Port 2-FXS / FXO-2 PCI Card with EC4 port modular analog PCI 3.3 / 5.0V card with 2 Station and 2 Trunk interfaces and HW Echo Can - Replacement for: 1TDM422EF One (1) - four ( 4) ... Lieske Part No.: 472114 Mfg Part No: 1A4A04F |
480,45 EUR 480,45 EUR
![]() ≈ £402.62 | ≈ $539.55
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Digium Wildcard TE436 PCI (Four-tensioning) 4xPRI
Four (4) span digital T1 / E1 / J1 / PRI PCI 3.3 / 5.0V cardLieske Part No.: 809114 Mfg Part No: 1TE436BF |
1.706,48 EUR 1.706,48 EUR
![]() ≈ £1,430.03 | ≈ $1,916.38
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Digium 1TELD045LF Phone D45 HD PoE - Icon Keys
Digium Phone D45 HD PoE - Icon KeysPhone, D45 2-Line SIP with HD Voice, Gigabit, Backlit display, Icon Keys Lieske Part No.: 989452 Mfg Part No: 1TELD045LF |
157,23 EUR
![]() ≈ £131.76 | ≈ $176.57
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Diverse Cables / Connectors / Adaptors
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Cable untangler for telephone cable transparent
Twisted phone cord thing of the past. Simply insert between handset and line cord, prevents coiling and tangling of the line cord. Lieske Part No.: 874072 Mfg Part No: 1544160 |
6,17 EUR
![]() ≈ £5.17 | ≈ $6.93
in stockinfo_outline
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Telco Patch Panel, Cable 2m, 45G, 1xST (Centronics) / 24xRJ45
K2140.2, 2mtr.Kabel with 1xOctopusstecker 50pol/45Grad for Screw on 24x RJ45 plugs on order Lieske Part No.: 208956 Mfg Part No: K2140.2 |
244,20 EUR
![]() ≈ £204.64 | ≈ $274.24
in stockinfo_outline
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Cable W.-St. RJ45 (8/4) - W.-St. RJ11 (6/4) 3 m (Bulk)
S-Impuls Kabel mit RJ11-Stecker und RJ45-Stecker garantieren zuverlässige und stabile Verbindungen für Ihre Telefon- und Netzwerkinstallationen.HighlightsKabel 4-adrig flachBeschaltung 1:1Farbe ... Lieske Part No.: 207221 Mfg Part No: TC 70253 |
12,25 EUR
![]() ≈ £10.27 | ≈ $13.76
in stockinfo_outline
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Cable TK TAE 3 m, TAE-F/RJ45, Black
TECHNISCHE MERKMALE Kabeltyp Anschlusskabel Anschluss Seite A Stecker TAE-F Anschluss Seite B Stecker RJ45 Adernzahl 2 Kabelfarbe schwarz Kabellänge 3 m Verdrahtung TAE F-1 - RJ45-4, TAE F-2 - RJ45-5 Lieske Part No.: 1227091 Mfg Part No: TC12-09045 |
-13% 1,68 EUR 1,94 EUR
![]() ≈ £1.41 | ≈ $1.89
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Connection cable RJ12/RJ12 6 m (5 pcs) wiring 1:1
Connection cable with 2 RJ12 connectors, 6 meters long, connected 6-core, for almost all fax / AB / modem, wired 1:1. Lieske Part No.: 790843 Mfg Part No: TZ-DL-K037 |
4,87 EUR
![]() ≈ £4.08 | ≈ $5.47
in stockinfo_outline
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Cables / Connectors / Adaptors from Fujitsu
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Fujitsu cable power connection rack, 1.8m
Das Fsas Technologies Stromkabel dient mit seinen spezifischen Anschlüssen als Zubehör für sämtliche Netzteile ausgewählter Fsas Technologies Server:Fsas Technologies PRIMERGY RX1330 M1, RX200 ...Lieske Part No.: 525383 Mfg Part No: T26139-Y1968-L180 |
11,22 EUR
![]() ≈ £9.40 | ≈ $12.60
Delivery time from supplier's stock (ca.) 9 workdaysinfo_outline
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Cables / Connectors / Adaptors from Gerdes
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Gerdes PrimuX 4S2M CompactPCI server controller
Server controller max. 4 PRI ports All ports configurable as NT or TE, switchable between E1 and T1, extended temperature range from -55 ° up to + + + + CONTRACT RELATED ARTICLESLieske Part No.: 230226 Mfg Part No: 2513 |
7.448,76 EUR
![]() ≈ £6,242.06 | ≈ $8,364.96
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Gerdes PrimuX SIP adapter, 2 channels
VoIP applicationsVoIP applications (SIP adapter to 120 channels) The PrimuX SIP adapters are virtual SIP adapter to which - as in the real PrimuX adapters also - can be accessed via the CAPI interface.Lieske Part No.: 705458 Mfg Part No: 2801 |
113,51 EUR
![]() ≈ £95.12 | ≈ $127.47
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Gerdes PrimuX SIP adapter, 4 channels
VoIP applicationsVoIP applications (SIP adapter to 120 channels) The PrimuX SIP adapters are virtual SIP adapter to which - as in the real PrimuX adapters also - can be accessed via the CAPI interface.Lieske Part No.: 705464 Mfg Part No: 2802 |
331,40 EUR
![]() ≈ £277.71 | ≈ $372.16
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Gerdes PrimuX SIP adapter, 8 channels
VoIP applicationsVoIP applications (SIP adapter to 120 channels) The PrimuX SIP adapters are virtual SIP adapter to which - as in the real PrimuX adapters also - can be accessed via the CAPI interface.Lieske Part No.: 705466 Mfg Part No: 2803 |
550,16 EUR 550,16 EUR
![]() ≈ £461.03 | ≈ $617.83
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Gerdes PrimuX SIP adapter, 16 channels
ApplicationsVoIP VoIP applications (SIP adapter to 120 channels) The PrimuX SIP adapters are virtual SIP adapter to which - as in the real PrimuX also adapters - can be accessed via the CAPI interface.Lieske Part No.: 797681 Mfg Part No: 2804 |
938,45 EUR
![]() ≈ £786.42 | ≈ $1,053.88
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Gerdes PrimuX SIP adapter, 30 channels
VoIP applicationsVoIP applications (SIP adapter to 120 channels) The PrimuX SIP adapters are virtual SIP adapter to which - as in the real PrimuX adapters also - can be accessed via the CAPI interface.Lieske Part No.: 705452 Mfg Part No: 2805 |
1.749,42 EUR
![]() ≈ £1,466.01 | ≈ $1,964.60
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Gerdes PrimuX SIP adapter, 60 channels
VoIP applicationsVoIP applications (SIP adapter to 120 channels) The PrimuX SIP adapters are virtual SIP adapter to which - as in the real PrimuX adapters also - can be accessed via the CAPI interface.Lieske Part No.: 705470 Mfg Part No: 2806 |
2.624,00 EUR
![]() ≈ £2,198.91 | ≈ $2,946.75
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Gerdes PrimuX SIP adapter 120 channels
VoIP applicationsVoIP applications (SIP adapter to 120 channels) The PrimuX SIP adapters are virtual SIP adapter to which - as in the real PrimuX adapters also - can be accessed via the CAPI interface.Lieske Part No.: 705510 Mfg Part No: 2807 |
5.548,61 EUR
![]() ≈ £4,649.74 | ≈ $6,231.09
Made to order · Delivery time approx. 20 workdaysinfo_outline
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Cables / Connectors / Adaptors from GN Audio
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GN Audio 14201-43 EHS adapter cable
for PRO 94xx, Motion Office and PRO 920/925 for connection to Cisco IP 6945 / 78xx / 79xx / 88xx Lieske Part No.: 626404 Mfg Part No: 14201-43 Type: CABL |
45,88 EUR 45,89 EUR
![]() ≈ £38.45 | ≈ $51.52
Delivery time from supplier's stock (ca.) 4 workdaysinfo_outline
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TK Cables & Connectors – Technical Background & Applications
TK cables connect terminal equipment (phones, fax, DECT base stations) to connection boxes, patch panels and telephone systems. RJ11 cables (4-pin, 6P4C) are used for analogue telephone connections and modem connections; RJ12 cables (6P6C) provide two additional conductors for ISDN bus lines or powering terminals. RJ45 patch cables to TIA-568-B and ISO/IEC 11801 in classes Cat.5e to Cat.6A are standard in structured office cabling for VoIP phones. In industrial environments, shielded variants (S/FTP, SF/UTP) are often used to suppress interference from motor frequencies and control cabinets. TAE connection cables connect TAE outlets to analogue terminal equipment per the German building installation standard.
Matching connection boxes for TK cables: Connection Boxes. Patch panels for structured distribution: Patch Panels. For large cable quantities and project requests: sales@industry-electronics.com – we supply pre-assembled or by the metre.
Application Areas
| ✓ Business Telephony & Call Centres | ✓ Authorities & Public Institutions |
| ✓ Industrial Environments & Production Halls | ✓ Hotels & Hospitality |
| ✓ Hospitals & Care Facilities | ✓ Data Centres & IT Infrastructure |
Frequently Asked Questions
▶ Which cable for VoIP phones – Cat.5e or Cat.6? For VoIP phones, Cat.5e (100 MHz, 1 Gbit/s) is fully sufficient in most cases, as VoIP only requires a few kBit/s of bandwidth. Cat.6 (250 MHz) offers more headroom and makes sense if the same cable will later be used for 10GBase-T (with Cat.6A, 500 MHz). For new installations, we recommend Cat.6A directly, as the additional cost is manageable and future-proofing is higher. |
▶ RJ11 and RJ45 – can they be plugged into the same socket? Mechanically, an RJ11 plug (6P4C, narrower) can be inserted into an RJ45 socket, but this is not recommended: contact reliability is poor and can damage the socket. Conversely, an RJ45 plug does not fit into an RJ11 socket. For connecting analogue phones to RJ45 outlets, special TAE-to-RJ45 adapters are available that correctly map the pin assignment. |
▶ What does S/FTP and SF/UTP mean in shielding designations? The shielding designation per ISO/IEC 11801 follows the scheme XX/YZZ: the first abbreviation describes the overall shield (U=unshielded, F=foil, S=braid, SF=foil+braid), the second the pair shield (UTP=unshielded, FTP=foil, STP=braid). S/FTP = overall braid + individual foils per pair (highest shielding). SF/UTP = foil+braid overall, no individual shielding. For industrial TK cabling with strong EMC interference, we recommend S/FTP. |
Why industry-electronics.de?
▶ Professional TK Range Over 15,000 telecoms products from Agfeo, Auerswald, Snom, Yealink, Innovaphone, Gigaset and other leading manufacturers. | ▶ B2B Expert Advice Our TK team advises on SIP migration, DECT planning, emergency call systems and standards compliance – free and vendor-neutral. | ▶ Volume Pricing from 1 Unit Quantity discounts, project prices and framework agreements for system integrators, authorities and industrial companies. |
▶ Fast Delivery Most items available from stock – free shipping across Germany from minimum order value. | ▶ 20+ Years TK Experience For over 20 years, Industry-Electronics has supplied system houses, authorities and industrial customers with professional telecoms technology. | ▶ Standards-Compliant Range All products comply with applicable EN, ETSI and VDE standards and regulatory approvals for commercial use. |


























