Grandstream GRP2604Four lines, dual gigabit, under $90.

Why the GRP2604 is on the catalog.

The GRP2604 is the upper edge of the entry tier. It looks like the GRP2603 and uses the same chassis, but it bumps you from three to four SIP accounts and from six to ten programmable keys — which is enough to actually build a reception phone out of it. Three lines for incoming, two for outgoing, five BLF buddy keys for coworker monitoring — that is a real workstation, not a stripped-down endpoint.

Compared to a Yealink T33G at the same price tier: the T33G has a marginally nicer screen and feels slightly more premium under the hand, but the GRP2604 gives you ten programmable keys to the T33G's four, and the GRP2604W variant adds Wi-Fi for about $15 more (the T33G has no Wi-Fi option at all). For a reception or admin desk where BLF monitoring is the main job, the GRP2604 wins on key count by a wide margin.

Where to skip it: if you need expansion modules (no sidecar support on this body — step up to the GRP2614 / GRP2615), if you need Bluetooth (same — go to GRP2614+), or if the boss is going to see it (the GRP2614 looks visibly nicer for not much more money). For everyone else who just needs a real phone at a real budget, this is the one we recommend.