Grandstream GRP2613Three lines, multi-page keys, USB on board.

Why the GRP2613 is on the catalog.

The GRP2613 is the GRP2612 with three real upgrades: a USB host port (for headsets and Wi-Fi dongles), multi-page programmable keys (24 effective keys across three on-screen pages instead of just six), and a third SIP account. Everything else — same chassis, same screen, same handset, same codecs — is identical.

The USB port is the upgrade that actually matters. Without it, you are stuck with RJ9 wired headsets, which is fine for office cubicles but limiting for anyone who wants to use a Jabra Engage 50 or a Plantronics CS540. With it, you plug any USB headset in directly and it works. You also get the option to add a Wi-Fi dongle if you ever need to relocate the phone to a desk without an ethernet drop — though the GRP2612W (built-in Wi-Fi version of the 2612) is a cheaper solution if Wi-Fi is the main thing you need.

Where the GRP2613 makes more sense than the GRP2614 above it: budget, mostly. The GRP2614 is $20-30 more and gives you a much bigger 4.3-inch screen, built-in Bluetooth, and a beefier processor. If the user is going to spend real time on the screen — directories, voicemail navigation, call history browsing — the GRP2614 is worth the upgrade. If the user mostly punches a dialpad, uses one or two BLF buddies, and answers calls with the handset, the GRP2613 is the smarter buy.