Description
Spec-first summary of the Grandstream GRP2603P IP desk phone: 3 line keys, 6 SIP accounts. Details and our deployment notes follow.
Feature set
- 3 line keys you can map to BLF, park or speed dial
- 6 SIP registrations per device
- 10/100/1000 switched ports, so the PC behind it keeps full speed
- Accepts PoE from the switch, so a local PSU is optional
- Wideband audio
- Noise suppression on the transmit path
- TLS/SRTP or equivalent security support
Deployment scenarios
- Hosted PBX rollouts
- Multi-site networks with VLAN-separated voice
- SIP trunk customers who want a dependable endpoint
Spec sheet
| Brand | Grandstream |
|---|---|
| Model | GRP2603P |
| Manufacturer part number | GRP2603P |
| Product type | IP Desk Phone |
| Line keys | 3 |
| SIP accounts | 6 |
| Network | Gigabit Ethernet |
| PoE | Yes |
| Audio | HD voice |
What ships
Factory package for the GRP2603P. Contents per the manufacturer packing list; confirm power and mounting accessories before ordering.
SIP and hosted voice notes
Works with standard SIP platforms, including our hosted PBX and common on-prem systems. Optional pre-configuration before shipping; US support included.









