Pay in installments of $131.54 with
,
and
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Aug 17 - Aug 22
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Cisco 1-Port T1/Fractional T1 DSU/CSU WAN Interface CardThe HWIC 1DSU T1 is a compact, high performance WAN interface card engineered to deliver dependable T1 connectivity with an integrated CSU DSU. Designed to fit Cisco routers with HWIC slots, this 1 port card streamlines deployment and ongoing management by unifying the router and CSU DSU into a single network entity. Its an ideal solution for branch offices, remote sites, and small to mid size networks that demand reliable data transmission, efficient
The HWIC-1DSU-T1 is a compact, high-performance WAN interface card engineered to deliver dependable T1 connectivity with an integrated CSU/DSU. Designed to fit Cisco routers with HWIC slots, this 1-port card streamlines deployment and ongoing management by unifying the router and CSU/DSU into a single network entity. It’s an ideal solution for branch offices, remote sites, and small to mid-size networks that demand reliable data transmission, efficient diagnostics, and straightforward administration. With its integrated CSU/DSU, you can reduce cabling, simplify configuration, and accelerate troubleshooting, all while preserving the familiar Cisco IOS management experience you rely on. The HWIC-1DSU-T1 is built to support fractional T1 configurations, enabling flexible bandwidth optimization to match your real-time needs and budget without compromising performance.
- Integrated CSU/DSU with single SNMP entity – The HWIC-1DSU-T1 merges the CSU/DSU functionality with the T1 interface, letting you manage the router and CSU/DSU as one cohesive SNMP object. This unified management model simplifies monitoring, fault isolation, and configuration changes, reducing the administrative overhead typically associated with separate devices. By presenting a single control plane for both data path and line interface, network teams gain faster visibility into the health of the WAN link and more efficient problem resolution across mixed environments.
- Reliable T1 and fractional T1 connectivity – This 1-port card delivers classic T1 performance with options for fractional T1 deployments, enabling you to tailor bandwidth to your actual needs. Capable of achieving up to 1.544 Mbps on a standard T1 link, the HWIC-1DSU-T1 supports fractional configurations where appropriate, helping you optimize utilization, preserve tie-line capacity, and reduce carrier costs while maintaining consistent latency and predictability for voice, data, and multi-site applications.
- Comprehensive troubleshooting and diagnostics – Built-in diagnostic capabilities empower IT teams to quickly identify and resolve WAN issues. Features include self-test routines, loopback testing (local and remote where supported by the router), and CSU/DSU diagnostic checks that verify line integrity, framing, and data-path health. Detailed status indicators, error counters, and test results provide actionable insights for rapid fault isolation, enabling faster mean time to repair (MTTR) and higher network availability.
- Easy deployment and centralized management – The HWIC-1DSU-T1 is designed for straightforward installation in supported Cisco ISR platforms. With an emphasis on ease of use, administrators can configure and monitor the card using familiar IOS commands and standard Cisco management workflows. The single-SNMP-entity model reduces the number of management points, simplifying alerting, performance monitoring, and inventory tracking across sites. This streamlined approach supports scalable growth as you add remote offices or expand your WAN.
- Versatile use cases with solid ROI – Ideal for branch offices, satellite locations, and small data-center edge deployments, the HWIC-1DSU-T1 delivers a dependable WAN option that supports voice and data services over T1 links. Its integration reduces hardware footprint and management complexity, while fractional T1 support unlocks cost-effective bandwidth provisioning. By enabling reliable connectivity and simplified administration, this card helps organizations accelerate time-to-service, improve user experiences, and maximize the return on existing Cisco investments.
Technical Details of Cisco 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card
- Model: HWIC-1DSU-T1
- Interface: 1-Port T1/Fractional T1 DSU/CSU WAN Interface Card
- Integrated CSU/DSU: Yes, integrated for simplified WAN management
- Management: Single SNMP entity for router and CSU/DSU
- Data Rate: 1.544 Mbps (T1), with fractional T1 options supported by compatible platforms
- Diagnostics: Self-test, loopback tests, CSU/DSU diagnostics
- Compatibility: Designed for Cisco routers with HWIC slots
- Deployment: Suitable for branch offices and remote sites requiring reliable WAN links
How to install Cisco HWIC-1DSU-T1
To install the HWIC-1DSU-T1, follow these general steps that apply to supported Cisco ISR platforms. Always consult your router’s hardware compatibility list and IOS version requirements before installation.
- Prepare the device: Power down the router and unplug it from the power source. Remove the chassis cover if required by your model, and discharge any static electricity by touching a grounded metal surface.
- Locate an available HWIC slot: Identify an open HWIC slot that is compatible with your router model. Confirm that the slot supports the HWIC-1DSU-T1 form factor and that the chassis supports the device’s power and cooling requirements.
- Insert the card: Carefully align the HWIC module with the slot rails and firmly seat it into place. Ensure the connector is fully seated and the card is secured with its mounting screw if required by the chassis design.
- Restore power and verify physical connection: Reattach the router cover if removed, reconnect power, and power up the device. Check that the hardware detects the new HWIC card and that there are no hardware fault indicators on the chassis.
- Configure and validate: Access the router’s IOS and configure the T1 interface as needed (for example, define the appropriate encapsulation, framing, and clocking). Verify the link status with show interfaces and show controllers commands, and confirm that SNMP status reflects the integrated CSU/DSU as a single management entity.
Frequently asked questions
- What is the Cisco HWIC-1DSU-T1? The HWIC-1DSU-T1 is a Cisco 1-port T1/Fractional T1 DSU/CSU WAN Interface Card featuring an integrated CSU/DSU and a single Management entity, designed to fit Cisco routers with HWIC slots and provide reliable WAN connectivity.
- Does it support fractional T1? Yes. In addition to a full T1 connection, fractional T1 configurations are supported on compatible router platforms to optimize bandwidth usage and cost.
- Is it SNMP-manageable? Yes. The router and CSU/DSU are managed as a single SNMP entity, simplifying monitoring, alerting, and configuration management.
- Which devices can use this HWIC? It is intended for Cisco routers that offer HWIC slots and support the HWIC-1DSU-T1 form factor and IOS features; check your model’s hardware compatibility matrix for exact support.
- What troubleshooting features are included? The card provides self-test capabilities, loopback testing, and CSU/DSU diagnostics to help identify line integrity issues, framing problems, and data-path health quickly.
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 7 reviews
Sort
Product Reviews
★★★★★ 5
Don’t let the bad reviews deter you from saving your skin
Style: Restorative Protective Cream-3.3 Fl Oz, Style: Restorative Protective Cream-3.3 Fl Oz
I avoided purchasing this product for a while due to the bad reviews. However, it is still highly recommended by several dermatologist for skin barrier repair. Upon doing my own research, the product can separate if it is stored in cold temperatures (41 degrees or less). This can be fixed people!! It literally says it on the bottle/box and there’s even a video that Amazon posted saying this can happen. It does not affect the product. It’s just the thermal spring water and some oil separating but it can be reincorporated.
So I took the risk and ordered this. I’m a first time purchaser. It was already at my door when I was leaving for the gym at 5:30am so I let the package sit in my car for about 1.5 hours (temp was about 70s). I put the tube in a glass of hot sink water for 10 minutes when I got home. I rolled the tube in my hands for a few minutes to mix everything together. Guess what. It came out like a CREAM. No liquid shot out at me. If you can read, do a little research, and can follow instructions, you can get a working product.
I have sensitive skin. It’s been a struggle healing my skin barrier but it was getting better. I decided to do something dumb and try dermaplaning. My cheeks have been very red and irritated since. I did avoid active products for a few days after dermaplaning but it was still irritated. Just with the first time use of this product, it was nearly instant relief of some of the redness. It’s fragrance less which is great. It is currently on sale so I think the value is good for what it is right now. I only used two pea-sized amount for my whole face so I think it will last awhile.
This can significantly help your skin barrier! Do your own research and read the instructions!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 20, 2026
★★★★★ 3
Samples great, purchased product not
Style: Restorative Protective Cream-1.3 Fl Oz
My dermatologist recommended this cream after a laser procedure, and gave me some samples to take home. I found the thick, smooth cream calming and protective for my irritated skin. The zinc oxide leaves a whitish cast at first, which does tend to fade after it sinks in, but it could be problem if you have darker skin. Not an issue for me since I’m pale.
Because I liked the samples, I ordered two full-size tubes. Both arrived with the product inside completely separated. The texture was nothing like the samples. I opened the first tube and clear, watery liquid spilled everywhere. I quickly recapped it, shook and squeezed the tube as much as possible to try to re-emulsify the product, and it remained stubbornly separated, with chunky white paste suspended in thin liquid. I’ve thoroughly shaken the second tube and continue to hear the sloshing of thin liquid. So apparently once the cream has separated, it will not re-mix.
I don’t know what caused the unacceptable condition of the product—manufacturing variation, storage conditions prior to shipping, or conditions during shipment. Whatever it was, I would not buy this product in this way again. The samples were a five star product. The full size product I received was zero stars.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 15, 2026
★★★★★ 4
Helped calm my damaged skin barrier, but expect stinging on very raw skin
Style: Restorative Protective Cream-1.3 Fl Oz
I bought this because I severely damaged my skin barrier and needed something gentle that would help my skin calm down and heal. My skin was extremely sensitive, raw, irritated, tight, and honestly uncomfortable even with water touching it.
This did help, but I do want to mention that if your skin is VERY damaged or raw, there can be some stinging at first. I experienced that myself during the first few applications. The stinging didn’t last long for me, but I think it’s important to mention because people with damaged barriers are usually desperate for relief and can panic when products sting.
What ended up helping me most was using this as part of a simple barrier repair routine instead of using it alone.
What I personally did:
* Wet my face first with either water or Avène Thermal Spring Water so my skin was damp but not soaking wet
* Applied the Avène Cicalfate onto the damp skin
* At night, I sealed everything in with CeraVe Healing Ointment (Aquaphor would probably work too)
I repeated this every night before bed and sometimes during the day if I was staying home.
If I was leaving the house during the day, I would do the same steps but use sunscreen instead of sealing with ointment. I honestly think sunscreen is extremely important when your skin barrier is damaged and trying to heal because irritated skin feels even more sensitive when exposed to sunlight.
I used this day and night, very easy to use, and didn’t experience breakouts from it. The texture is thick but comforting once applied, especially when your skin feels dry and stripped.
Overall, I would buy this again. I don’t think it’s some overnight miracle product, but it genuinely helped my skin calm down and recover when my barrier was damaged. I personally didn’t notice any strong fragrance, which I appreciated since my skin was already extremely irritated. I also like how versatile this product is. Even though I originally bought it for barrier damage, I can see why people use it for irritation from retinol, over-exfoliating, dry patches, or skin that just feels compromised in general.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 14, 2026
★★★★★ 5
Holy Grail of Moisturizers
Style: Restorative Protective Cream-3.3 Fl Oz
I bought this after hearing a dermatologist on Instagram rave about this cream and now I see why. As someone who suffers from pretty severe eczema this is my go to holy grail for flair ups. Perfect for sensitive skin and can be used daily. It is very thick so provides a thick layer of moisture on your skin. I will say I have bought 2 sizes in this and the smaller size (1.3fl oz) did separate and had a liquid part that would come out. I have bought numerous tubes of the larger size (3.3fl oz) and never had an issue with separation with the larger size. I’m learning as I get older that more expensive does not mean better quality skincare. This is one that is not only affordable, but will also give you noticeable results. I have everyone in my whole family using this product!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 17, 2026
★★★★★ 5
Saved my skin barrier!!
I rarely write reviews, but this product truly deserves it. I have sensitive, dry skin with mild to moderate rosacea that became even more fragile after chemotherapy. While trying to repair my skin barrier, I overdid it with actives and completely wrecked my skin — it was red, raw, burning, and peeling.
I turned to ChatGPT for help, and this Avene Cicalfate+ was one of the top recommendations. I started using it about three weeks ago, and wow — the difference is incredible! My skin has healed beautifully. The redness is dramatically reduced, the irritation is gone, and my skin feels soft, smooth, and calm again.
The texture is soft and luxurious without being sticky. I love that there’s no noticeable scent, which is perfect for sensitive skin. It arrived well packaged and intact. For the results it delivers, I consider it an amazing value and will absolutely repurchase again and again.
If you’re on the fence about trying this, go for it — it truly rescued and revived my skin barrier. This is now a permanent part of my routine and 100% a holy grail product for me!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on October 23, 2025