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CMX631DW
CMX631DW - Brand New Cmedia IC Chips
Credit Card - One-month free return and one year warranty.
- Full or Partial Refund, if the item is not as described
- Full Refund if you don't receive your order
**The CMX631A is a low-power, system-selectable Subscriber Pulse Metering
(SPM) detector that indicates the presence of both 12kHz or 16kHz telephone call-charge frequencies on a telephone line.**
Deriving its input directly from the telephone line, input
amplitude/sensitivities are component adjustable to the user's national
‘Must/Must-Not Decode’ specifications via an on-chip input amplifier. The
12kHz and 16kHz frequency limits are accurately defined by the use of an
external 3.579545MHz telephone-system Xtal or clock-pulse input.
The CMX631A demonstrates exceptional 12kHz and 16kHz performance in the
presence of both voice and noise. This device may operate from a single or
differential analog signal input, from which two individual logic outputs will
be produced; a Tone Follower Output or a Packet Mode Output.
Features
• Detects 12kHz or 16kHz SPM Frequencies
• Tone Follower and Packet Mode Outputs
• High Speech-Band Rejection Properties
• Low Power Operation (3.0V < 0.8mA)
Applications
• Call Charge Applications on PABX Line Cards
• Complex and/or Simple telephone Systems
• Remote Telephone/Payphones
Shipping
| First item | Additional item | Service | Description |
|---|---|---|---|
| $0.00 | Free | Free Shipping | Estimated 15-30 business days via Registered Air Mail or others |
| $27.50 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
| $0.00 | Free | Buyer cooperating carrier | Using buyer's cooperating carrier. Buyer should create a shipping label and share it to us. And then we will call carrier for pickup |
| $38.00 | Free | Expedited Shipping | Estimated delivery time is 3-5 business days, with some areas possibly taking 6-9 business days depending on the shipping address. The main courier companies include but are not limited to UPS, DHL, and FedEx. |
Delivery
- The transportation time may be delayed due to customs clearance, local holidays or abnormal events.
- The estimated time is based on the fastest speed provided by commercial couriers (DHL, FedEx, UPS etc).
- The estimated time does not include the lead time of the item. The lead time of most items is 2–5 business days. If more than 5 working days are needed, we will manually confirm with you.
| Flag | Country | Express Delivery | Standard Delivery |
|---|---|---|---|
 | United States | 3 - 5 days | 10-15 days |
 | Canada | 3 - 5 days | 10-20 days |
 | Mexico | 3 - 5 days | 10-17 days |
 | Germany | 3 - 5 days | 10-12 days |
 | Italy | 3 - 5 days | 10-15 days |
 | United Kingdom | 3 - 5 days | 10-12 days |
Estimated Delivery
This item requires 2-5 business days for processing before shipping after payment is confirmed. And depending on the destination and shipping method.
Return Policy
| Return window | Refund type | Return shipping |
|---|---|---|
| 60 days after receiving item | Money Back or Replacement | Buyer pays for return shipping |
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