Grandstream UCM6301 IP PBX with FXS and FXO Ports

Grandstream UCM6301 gives an organization a middle position between a modern SIP PBX and a limited need to retain analog connectivity. It supports 500 users and 75 concurrent G.711 calls, with capacity for 50 concurrent SRTP calls. One FXS port and one FXO port let a branch connect a single analog endpoint and a single analog line without moving to a model carrying more analog interfaces. Three self-adaptive Gigabit network ports with PoE+ and a NAT router support integration into the network design. Wall or desktop installation provides a practical choice for the communications room. This combination fits sites where most calling is already SIP based but one defined analog connection of each type remains operationally useful.

The role of Grandstream UCM6301

The 500-user capacity suits a multi-department organization or a larger branch that needs more SIP accounts than the entry model. A limit of 75 concurrent G.711 calls defines ordinary voice load, while the concurrent SRTP limit is 50. Project owners should examine each ceiling against the expected mix during the busiest hour. The 320×240 color touch LCD provides a local control point for technicians during setup and routine inspection.

The FXS port can connect an analog endpoint, and the FXO port can accept one analog line. This layout is not intended for a large legacy estate; it preserves a small bridge while the main environment operates on SIP. Beyond the three Gigabit connections, the appliance includes USB 3.0 and SD interfaces. Its chosen wall or desktop position should maintain service access to those interfaces and the touch display.

Where the model makes sense

UCM6301 can suit a regional office moving communications to IP while retaining one analog line. A hospitality property may use it when one analog endpoint remains beside a broader SIP-phone deployment. In a service center, operations staff should compare current and planned accounts with the 500-user capacity, then verify that the G.711 peak remains within 75 simultaneous calls. That sequence ties purchasing to actual traffic instead of relying on total headcount.

Difference from UCM6300A and UCM6302A

UCM6300A has no FXS or FXO ports and supports 250 users with 50 concurrent G.711 calls, positioning it for a smaller all-SIP project. UCM6301 raises those figures to 500 users and 75 concurrent G.711 calls, then adds one FXS and one FXO port. UCM6302A keeps the 500-user and 75-call G.711 capacity but provides two FXS and two FXO ports and handles 75 concurrent SRTP calls. UCM6301 is therefore the measured choice when one connection of each analog type is enough.

Installation planning

The included 12V adapter means the team must reserve an outlet and an Ethernet route at the selected location. Network planning should assign the three Gigabit ports, account for the PoE+ and NAT router functions, and document the purpose of both analog interfaces. Commissioning can then test SIP calls and the intended analog connection at a load close to normal operations. With that preparation, UCM6301 delivers medium family capacity and a controlled analog bridge without excess interface count.

Package Contents

• UCM6301 unit
• Ethernet cable
• 12V power adapter
• Quick Installation Guide