SIP RFC 3261 HD Voice & wideband | PoE IEEE 802.3af Microsoft Teams / Cisco |
IP System Phones (SIP)
SIP IP phones (Session Initiation Protocol, RFC 3261) are the standard for all modern VoIP installations and completely replace ISDN system phones in new installations. They connect via Ethernet and can be powered directly via the network cable through PoE (Power over Ethernet, IEEE 802.3af/at) – without a separate mains adapter. High-quality SIP phones support HD Voice (G.722, 50–7,000 Hz) and wideband codecs that significantly improve voice quality compared to ISDN. Quality assurance is achieved via QoS (Quality of Service, DSCP/CoS marking) in the network. Manufacturers such as Snom and Yealink offer series from entry-level desk phones to executive comfort phones with colour display, Bluetooth, USB and integrated DECT dongle. Microsoft Teams-certified IP phones (e.g. Yealink T5x, Poly Edge E series) integrate directly into Teams and show presence status, calendar entries and Teams contacts on the display. Provisioning via TR-069, TFTP or manufacturer-specific cloud platforms (e.g. Snom SRAPS, Yealink RPS) enables zero-touch deployment for large rollouts. |
Top sellers in System Telephones IP
System Telephones IP from AGFEO
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 AGFEO system telephone ST42 IP black
The ST 42 IP for current AGFEO communications systems with LAN technology. Absolutely new in this class is the Combi modular bay, which can be equipped with Bluetooth technology or EnOcean radio ...Lieske Part No.: 342438 Mfg Part No: 6101320 |
261,08 EUR
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Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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AGFEO system telephone ST45 IP black
With the ST 45 IP in a new world. Designed for office professionals phone is now equipped for VoIP telephony. Connected via the existing network, new possibilities open up in the communication ... Lieske Part No.: 924361 Mfg Part No: 6101322 |
325,24 EUR
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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AGFEO system telephone ST45 IP black, demonstration device
With the ST 45 IP in a new world. Designed for office professionals phone is now equipped for VoIP telephony. Connected via the existing network, new possibilities open up in the communication ... Lieske Part No.: 1000011 Mfg Part No: 6101322 |
239,00 EUR
plus delivery charges
in stockinfo_outline
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AGFEO ST 45 IP silver
For AS systems (firmware >/= 9.2) as well as ES (from version 1.3) and HyperVoice systems. Movable and illuminated 4.3 inch color display, soft keys, slot for optional BT module 40, En module 42 ... Lieske Part No.: 1289338 Mfg Part No: 6101323 |
-8% 287,62 EUR 311,46 EUR
plus delivery charges
Delivery time on requestinfo_outline
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AGFEO system telephone ST22 IP black
The ST 22 IP - professionalism bundled on the essentials. With this system you will telephone at home right away, without any hidden features. Pick up the phone, it's worth it. > Highlights: -10 ... Lieske Part No.: 256226 Mfg Part No: 6101424 Type: ST22 IP schwarz |
192,49 EUR
plus delivery charges
in stockinfo_outline
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AGFEO system telephone ST56 IP SENSORfon pure white
In addition to the new, modern design, the ST 56 IP business office telephone offers a large color display that makes the status information even easier to read. This - in conjunction with the ... Lieske Part No.: 1265108 Mfg Part No: 6101635 |
379,45 EUR
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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System Telephones IP from ALCATEL-LUCENT
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 ALCATEL-LUCENT ENTERPRISE Netzteil 48 V Europa x4 kompatibel mit My IC Phone 8082 und IP Touch 8 Series
Lieske Part No.: 233901 Mfg Part No: 3MG27006AA |
49,00 EUR
plus delivery charges
Delivery time on requestinfo_outline
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System Telephones IP from Auerswald
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 Auerswald 90071 COMfortel 1400 IP black
Auerswald COMfortel 1400 IP blackAvailable in Q3 / 2014 Hybrid VoIP phone - SIP standard and IP telephone system, based on Android 8,9 cm ( 3,5 inch )color display and touch function Hybrid VoIP ... Lieske Part No.: 408878 Mfg Part No: 90071 |
170,90 EUR
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Auerswald 90073 COMfortel 2600 IP black
Auerswald COMfortel 2600 IP black Available in Q3 / 2014 Hybrid VoIP phone - SIP standard and IP telephone system, based on Android 4.3 color display, up to 105 function keys and scripted voicemail. - ... Lieske Part No.: 318712 Mfg Part No: 90073 |
245,39 EUR
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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System Telephones IP from Grandstream
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 Grandstream GXP-1625 PoE
The model GXP1625 is Grandstream s standard IP phone for small and medium businesses. The Linux-based phone can handle two SIP trunks / identities and has three user-programmable soft keys, HD audio, ...Lieske Part No.: 780577 Mfg Part No: 121404 |
42,98 EUR
plus delivery charges
Delivery time on requestinfo_outline
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System Telephones IP from Wildix
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 Wildix PS-WP4X0/500 External power supply for WP400, WP410, WP480, WP490 phones
Lieske Part No.: 157900 Mfg Part No: PS-WP4X0/500 |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Wildix PS-WP4X0G External power supply for WP480G, WP490G phones
Lieske Part No.: 157916 Mfg Part No: PS-WP4X0G |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Wildix PS-WP600A External power supply for WP600A, WP600ACG
Lieske Part No.: 157917 Mfg Part No: PS-WP600A |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Wildix WP410 SIP HD Phone, 4 BLF
The Wildix VoIP phone WP410 has a simple, intuitive and user-friendly user interface. Display: 132*64 LCD2 ports 10/100Broadband HD audioPresenceCentral PBX phone bookMax 4 BLF buttonsPoE IEEE 802. Lieske Part No.: 162122 Mfg Part No: WP410 |
on request
plus delivery charges
Delivery time on requestinfo_outline
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Wildix WP480-WM WP480 and WP490 wall mount bracket
Lieske Part No.: 162306 Mfg Part No: WP480-WM |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Wildix WP490EXT Keypad expansion 20 keys, WP490
Lieske Part No.: 162385 Mfg Part No: WP490EXT |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Wildix WP600A SIP phone, Android OS, Wi-Fi, Bluetooth, Touchscreen, Up to 120 BLF keys
The WP600A is based on the Android OS, features a capacitive touchscreen display and offers both WiFi and Bluetooth connectivity. Android 4.2 OS7-inch 800*480 color displayTouchscreenPresence & ... Lieske Part No.: 162526 Mfg Part No: WP600A |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Wildix WP600ACG SIP Gigabit phone, Android OS, Camera, Wi-Fi, Bluetooth, Touchscreen, Up to 120 BLF keys
The WP600ACG is based on the Android OS, features a capacitive touchscreen display and offers both WiFi and Bluetooth connectivity. Switchable cameraAndroid 4.2 OSColor display 7-inch ... Lieske Part No.: 162552 Mfg Part No: WP600ACG |
on request
plus delivery charges
in stockinfo_outline
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Handset for Wildix Phones WP480 2015, WP410
VE 6 Stück Lieske Part No.: 162642 Mfg Part No: WPHS480 |
on request
plus delivery charges
Delivery time on requestinfo_outline
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Handset for Wildix Phones WP490 2015, WP490G
Lieske Part No.: 162705 Mfg Part No: WPHS490 |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Handset for Wildix Phones WP490 - WP500 - WP600 old series
Lieske Part No.: 162714 Mfg Part No: WPHS490-500 |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Handset for Wildix Phones WP600A, WP600ACG
Lieske Part No.: 162737 Mfg Part No: WPHS600A |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Spiral Cord for Wildix Phones WP400 - WP480 Old Series
Lieske Part No.: 162738 Mfg Part No: WPSC400-480 |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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Spiral Cord for Wildix Phones WP490 - WP600 Old Series
Lieske Part No.: 162740 Mfg Part No: WPSC490-600 |
on request
plus delivery charges
Delivery time from supplier's stock (ca.) 6 workdaysinfo_outline
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IP System Phones (SIP) – Technical Background & Applications
SIP IP phones (Session Initiation Protocol, RFC 3261) are the standard for all modern VoIP installations and completely replace ISDN system phones in new installations. They connect via Ethernet and can be powered directly via the network cable through PoE (Power over Ethernet, IEEE 802.3af/at) – without a separate mains adapter. High-quality SIP phones support HD Voice (G.722, 50–7,000 Hz) and wideband codecs that significantly improve voice quality compared to ISDN. Quality assurance is achieved via QoS (Quality of Service, DSCP/CoS marking) in the network. Manufacturers such as Snom and Yealink offer series from entry-level desk phones to executive comfort phones with colour display, Bluetooth, USB and integrated DECT dongle. Microsoft Teams-certified IP phones (e.g. Yealink T5x, Poly Edge E series) integrate directly into Teams and show presence status, calendar entries and Teams contacts on the display. Provisioning via TR-069, TFTP or manufacturer-specific cloud platforms (e.g. Snom SRAPS, Yealink RPS) enables zero-touch deployment for large rollouts.
IP PBX counterparts: Telephone Systems. DECT system phones for cordless variant: DECT System Phones. Headsets for SIP phone connection: Headsets. All-IP migration and pilot installation: +49 (0)7666 / 88499-0.
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
▶ What is PoE and how much power does it deliver? PoE (Power over Ethernet) feeds direct current over the data conductors of the Ethernet cable (Cat.5e or better). Standards: IEEE 802.3af (PoE): max. 15.4 W at switch port (12.95 W at device) – sufficient for most SIP phones. IEEE 802.3at (PoE+): max. 30 W – for phones with colour display, WiFi and USB charging. IEEE 802.3bt (PoE++): max. 60 or 100 W – for cameras, APs, panels. The switch must support PoE and have sufficient budget for all ports. |
▶ How do I register a SIP phone with my IP PBX? Basic requirement: PBX with SIP server (Auerswald COMpact, FRITZ!Box, Asterisk/FreePBX, 3CX, etc.) and a configured SIP account. On the phone, configure: SIP server IP (or FQDN), SIP username (extension), SIP password and optionally registrar/proxy. Most manufacturers support auto-provisioning via DHCP option 66 (TFTP server) or manufacturer-specific cloud URLs – then MAC address entry in the PBX suffices for zero-touch. |
▶ What is the difference between a SIP phone and an IP system phone? A SIP phone implements only the open SIP protocol (RFC 3261) – it works manufacturer-independently with any SIP server. An IP system phone additionally supports manufacturer-specific PBX extensions: e.g. Auerswald COMfortel for Auerswald systems with COMfortel app functions (speed dial, busy lamp field, attendant console). These additional functions are only available when phone and system are from the same manufacturer or explicitly compatible. |
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