Grandstream UCM6302 IP PBX for 1,000 Users with 2 FXO and 2 FXS

The Grandstream UCM6302 supports 1,000 users and 150 concurrent calls, with 2 FXO ports for landlines and 2 FXS ports for analog phones or fax, in a compact wall or desktop chassis. It fits mid-size companies, schools and clinics that need serious capacity without a rack.

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The Grandstream UCM6302 delivers 1,000 users and 150 concurrent calls from a unit only 270 × 175 mm in size, so you do not need a rack or a server room to run it. Two FXO ports take your landlines, two FXS ports run analog phones or fax, and built-in video meetings hold up to 150 participants. It is a strong match for mid-size companies, schools and clinics that want big-PBX capacity in a small footprint.

Grandstream UCM6302 key specs

• 1,000 users and 150 concurrent G.711 calls, 100 of them SRTP-encrypted.
• 2 FXO and 2 FXS RJ11 ports.
• 3 Gigabit ports with PoE+ and NAT router mode.
• 1 USB 3.0, 1 USB 2.0 and an SD card slot.
• 725 g unit weight.

Mid-size capacity without a rack

Many schools and offices have no dedicated telecom rack. The UCM6302 mounts on the wall next to the network switch or sits on the IT desk, yet it still serves a thousand extensions. Its three Gigabit ports work in switched or NAT router mode, depending on how your network is laid out.

Two landlines and two analog phones

The FXO ports connect two landlines, so callers dial the main number and reach the right department through the auto attendant. The FXS ports drive a fax machine and a gate or guard phone. Grandstream lists lifeline capability on these ports during power outages. For a large analog estate, add an FXS gateway such as the GXW4216.

Video meetings and call center features

Meetings are built in: unlimited rooms, up to 8 public rooms at once, 150 participants across all rooms and 9 video feeds per room. Customer service teams get an IVR up to 64 layers deep and queues with ACD by agent skill, availability and workload. Recordings are saved to an SD card or USB drive.

Where the UCM6302 fits in Saudi Arabia

• Private schools: extensions for admin, deputies and teachers, plus two landlines for parents.
• Medical complexes and clinics: appointment queues and a multi-language IVR.
• Mid-size companies with several departments holding internal video meetings on the PBX.
• Regional offices linked to the head office over SIP trunks.

Compatibility and management

The UCM6302 auto-provisions Grandstream phones such as the GRP2602P and works with any standard SIP phone. The Wave app is free on mobile, desktop and web, UCM RemoteConnect links remote staff, and GDMS manages the PBX from the cloud. Security covers secure boot, SRTP, TLS and ZRTP encryption, and Hot Standby support.

UCM6302 vs UCM6302A vs UCM6304

The UCM6302A shares this chassis and port layout but is audio-only with half the capacity: 500 users and 75 calls. The UCM6304 is a rack unit with 2,000 users, 300 calls and 4 FXO + 4 FXS ports. Choose the UCM6302 for up to 1,000 staff when you want video meetings without a rack.

Frequently Asked Questions

Does the UCM6302 need a rack?

No. It mounts on a wall or sits on a desk, and the unit measures 270 × 175 × 36 mm.

What is the difference between the UCM6302 and UCM6302A?

Same ports (2 FXO, 2 FXS), but the UCM6302 handles 1,000 users and 150 calls with video meetings, while the UCM6302A is audio-only for 500 users and 75 calls.

How many people can join UCM6302 meetings?

Up to 150 participants across all rooms, with up to 8 public rooms running at the same time.

Specifications

• Model: UCM6302
• Series: UCM6300
• Users: 1,000
• Concurrent calls (G.711): 150
• Concurrent SRTP calls: 100
• FXS ports: 2× RJ11
• FXO ports: 2× RJ11
• Network: 3× self-adaptive Gigabit RJ45 (switched, routed or dual mode) with PoE+
• Peripheral ports: 1× USB 2.0, 1× USB 3.0, 1× SD card
• Reset switch: Long press for factory reset, short press for reboot
• Meetings: Unlimited rooms, up to 8 simultaneous public rooms, max 150 participants across all rooms, up to 9 video feeds per room
• IVR and call center: IVR up to 64 layers, multi-language; multiple queues with ACD by agent skill, availability and workload; in-queue announcements
• Voice and fax codecs: Opus, G.711 A/μ, G.722, G.722.1/1C, G.723.1, G.726-32, G.729A/B, iLBC, GSM; T.38 fax
• Video codecs: H.265, H.264, H.263, H.263+, VP8
• Media encryption: SRTP, TLS, HTTPS, SSH, 802.1X, ZRTP
• Security: Secure boot, unique certificate, random default password
• QoS: Layer 2 (802.1Q, 802.1p) and Layer 3 (ToS, DiffServ, MPLS)
• Apps and management: Free Wave app (Android, iOS, Windows, macOS, web), UCM RemoteConnect, GDMS cloud management, API for CRM and PMS
• High availability: Hot Standby high availability
• Platform: Based on Asterisk 16
• Dimensions: 270 × 175 × 36 mm
• Weight: 725 g (1,221 g packed)
• Mounting: Wall mount or desktop
• Operating temperature / humidity: 0–45°C, 10–90% non-condensing
• Storage temperature: -10–60°C, 10–90% non-condensing
• Compliance: FCC Part 15 Class B and Part 68, CE, IC, RCM; power adapter UL 60950-1 or UL 62368-1
• In the box: PBX unit, 1× Ethernet cable, 1× power adapter, quick installation guide

Features

• 1,000 users and 150 concurrent G.711 calls: 100 of them SRTP-encrypted.
• 2 FXO + 2 FXS ports: two landlines plus two analog phones or fax lines, with lifeline support.
• Built-in video meetings: up to 8 public rooms at once, 150 participants and 9 video feeds per room.
• 1 USB 3.0, 1 USB 2.0 and an SD slot: extra room for recordings, voicemail and backups.
• Free Wave app and GDMS cloud management: extensions on staff phones, the PBX under IT's eye.