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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23
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Description
Grandstream GXW4504 4x E1/T1/J1 Port Digital VOIP GatewayProduct Features: Dual Gigabit autosensing RJ45 network ports with integrated NAT router TLS and SRTP security encryption technology to protect calls and accounts Automated provisioning by HTTP TFTP with XML config files Software configurable E1 T1 J1 ports, support PRI, SS7, MFC R2 Supports a wide range of voice codecs, including G. 722, G. 729, iLBC, and more Supports T. 38 Fax for creating Fax over IP Supports multi language voice prompts, and up
Product Features:- Dual Gigabit autosensing RJ45 network ports with integrated NAT router
- TLS and SRTP security encryption technology to protect calls and accounts
- Automated provisioning by HTTP/TFTP with XML config files
- Software configurable E1/T1/J1 ports, support PRI, SS7, MFC R2
- Supports a wide-range of voice codecs, including G.722, G.729, iLBC, and more
- Supports T.38 Fax for creating Fax-over-IP
- Supports multi-language voice prompts, and up to 120 concurrent calls
- E1/T1/J1 Interface: 4 RJ45 ports, supporting up to 120 simultaneous VoIP calls
- Network Interfaces: Dual self-adaptive Gigabit ports (switched or routed)
- Peripheral Ports: (2) USB 3.0, (1) SD card interface
- LED Indicators: LAN, WAN, E1/T1/J1
- Voice-over-Packet Capabilities: LEC with NLP Packetized Voice Protocol Unit, 128ms-tail length carrier grade Line Echo Cancellation, Dynamic Jitter Buffer, Modem detection & auto-switch to G.711
- Voice and Fax Codecs: G.711 A-law/U-law, G.722, G.723.1 5.3K/6.3K, G.726, G.729A/B, iLBC, AAL2-G.726-32
- Voice-quality Enhancement: Echo cancellation (G.168-2004), Jitter buffer, Silence suppression (VAD, CNG), PLC
- QoS: Layer 2 QoS (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS) QoS
- DTMF Methods: In-band audio, RFC2833, and SIP INFO
- Device Management: Syslog, HTTPS, Web browser, voice prompt, backup and restore, port capture and packet capture
- Network Protocols: TCP/UDP/IP, RTP/RTCP, ICMP, ARP, DNS, DDNS, DHCP, NTP, TFTP, SSH, HTTP/HTTPS, PPPoE, STUN, SRTP, TLS, LDAP, PPP, Frame Relay (pending), IPv6, OpenVPN
- Media Encryption: SRTP, TLS, HTTPS, SSH, 802.1X
- User-defined ports: SIP port, RTP port, HTTP/HTTPS port
- Universal Power Supply: Input: 100 ~ 240VAC, 50/60Hz; Output: DC+12V, 2A
- Mounting: Rack mount & Desktop
(1) Grandstream GXW4501 Digital VOIP Gateway
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.6 ★★★★★
Based on 13 reviews
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Product Reviews
★★★★★ 4
Functional and Good Quality
Color: 01-silver, Color: 01-silver
I give this SMARTAKE paper towel holder 4 stars. Overall, it's a very good product that I would recommend, but it has one minor drawback that takes away a star.
The Positives
Quality and Stability: The holder feels good quality, and the material (steel) is sturdy. Once placed on the counter, it's stable and adheres well to the surface.
Assembly and Use: It was easy to put together; just read the instruction manual. I confirm that it works well even with large paper towel rolls. Furthermore, it's not difficult to change the roll at all.
The Drawback
The only problem is the small mechanism that's supposed to adjust and hold the roll (the piece that prevents it from twisting too much). As the paper gets used up, this piece doesn't do its job properly, and the paper unwinds more than it should.
Conclusion: If you're looking for a modern, stable, and well-made holder for your kitchen, this is excellent. Just keep in mind that the adjuster isn't the best, but other than that, it does its job perfectly.
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Reviewed in the United States on October 18, 2025
★★★★★ 5
Durable and nice look
Color: 02-black
Nice quality and nice look for our kitchen
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Reviewed in the United States on May 30, 2026
★★★★★ 5
Classic holder keeps paper towels in place in a breeze.
Color: 06-bronze
This classic paper towel holder works perfectly. I had constantly unrolling paper towels in the breeze. This holder keeps everything in place now. So nice. Plus, it has a sleek, uncluttered design. I’m very pleased.
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Reviewed in the United States on May 18, 2026
★★★★★ 3
Only holds towels in place when it is full or 1/2 full
Color: 01-silver
If you are buying this for the feature of holding the paper towels in place so you can just rip one, I think you will be disappointed. Once the roll becomes smaller (and I tried changing the arm) the arm does not touch the towels. I do like the firm grip on the counter. My other dissatisfaction is the base gets water spots. Being near the sink this happens frequently. It does its job and is attractive.
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Reviewed in the United States on May 21, 2026
★★★★★ 5
Stylish
Color: 01-silver
Good sturdy stand for paper towels. Has small suction cups on bottom for stability. Good finish and good fit under the counter. Heavy base and not flimsy feeling. Brushed aluminum matched other appliances well.
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Reviewed in the United States on January 6, 2026
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