Grandstream GRP2601P phone. If you are looking for a practical desk phone to manage business calls easily, the Grandstream GRP2601P phone offers a range of features suitable for offices and various work environments, with support for SIP accounts and network connectivity via two Ethernet ports. The Grandstream GRP2601P supports two phone lines and two SIP accounts, with a 2.4-inch LCD screen to display call information and manage the phone easily. It also supports up to 5-way audio conferencing, and comes