NIM-2FXSP=

NIM-2FXSP= is a network interface module for Cisco ISR 4000 routers: 2-port Network Interface Module – FXS, FXS-E and DID.

The three things that decide whether a card like this will work, in order of how often they are got wrong. First the chassis: a card seats mechanically in families it is not supported in, and on some platforms it will be recognised and then refuse to pass traffic. Second the software release, because card support is gated by release and a router held back on an older version will reject hardware that is otherwise perfectly compatible — the symptom looks like a hardware fault and is not one. Third the slot, because high-throughput cards often require specific slots with the fabric bandwidth to feed them, and the chassis will not tell you that until the card is in.

What this platform is for. The ISR 4000 is a branch and regional-office router from Cisco’s current Integrated Services line, where throughput is licensed in tiers rather than fixed. Knowing the family’s intended role is usually more useful than the part number when you are working out whether something fits: a chassis built for one job will do another, but rarely well, and the cost of that mismatch tends to show up as throughput or feature limits rather than as an outright failure.

Three questions worth answering before any router purchase, whatever the model. What the throughput requirement actually is with your feature set enabled, rather than the datasheet figure measured without it. Whether the features you need are licensed as well as present, since on most platforms security and performance are separate entitlements. And how many slots or ports you will need in three years, because adding capacity is cheap and replacing a chassis is not.

A point about end-of-life notices on a platform like this, because it causes real confusion. Cisco publishes these per part number, not per family. The ISR 4000 family is not retired, but individual line cards, route processors and software releases within it have their own notices, and some of them have passed. So “is the platform current?” and “is this specific card still supported?” are two different questions with potentially different answers.

That is why we check the exact part number rather than the family before quoting. Send us the code you are looking at and we will tell you where that specific item stands, not where the platform stands.

Tell us the chassis, the software release it is running and which slot you intend, and we will confirm this card is supported in that combination before you order. If you are buying it as a spare, the part number on the card already fitted is a better guide than the original order paperwork, which on a router that has been maintained for a few years has usually drifted.

Green Code Technologies is a supplier of Cisco, and we supply Huawei and Juniper networking alongside HPE, Dell, Samsung, Netgear, Ubiquiti and Asus. We would rather tell you a part is no longer supported, or that we need to check it, than take an order for something that will not do what you need.