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Ships within 48 hours · Estimated delivery Jul 23 - Jul 28
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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
4.3 ★★★★★
Based on 22 reviews
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Product Reviews
★★★★★ 5
Deliveries are on time, product is always in great shape
Package Size Name: Family, Size: 286 Count (Pack of 6)
Great product and delivery is always on time👍
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Reviewed in the United States on April 8, 2026
★★★★★ 5
the absolute BEST paper towels
Package Size Name: Super, Size: 81 Sheets (Pack of 24)
These are the best paper towels, Ever. We now exclusively buy them and this multi pack is a good value. The paper towel sheet feels more like cloth than paper towel, they are exceptionally soft, but sturdy and hold up and can really clean a lot with even one sheet. Very absorbent and I cannot stress how soft they are. These seriously are the only paper towels that we will use anymore, and have been using for the past 5 years. Cannot recommend these enough
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Reviewed in the United States on January 12, 2024
★★★★★ 5
Best, eve!
Package Size Name: Super, Size: 81 Sheets (Pack of 24)
These are the best, softer than tissues & toilet paper. Whenever someone is over and uses one they can’t get over how great they are. Will never buy go any other paper towels.
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Reviewed in the United States on May 9, 2026
★★★★★ 4
Best paper towels on the market
Package Size Name: Super, Size: 81 Sheets (Pack of 24)
We have these on deck all the time. Absorbency is great but for windows and mirrors they always leave residue.
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Reviewed in the United States on April 27, 2026
★★★★★ 5
Great paper towels
Package Size Name: Super, Size: 81 Sheets (Pack of 24)
My favorite paper towels by far. They are getting harder to find and more expensive and i have no idea why.
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Reviewed in the United States on March 8, 2026