IP PBX · SIP core

OM1000-UC IP PBX — 1000 SIP trunks with dual hot standby

The SIP-only model: no analog ports at all, four gigabit interfaces, 1000 SIP trunks and dual hot standby. It is the one in the range built for pure IP deployments and for DID/DOD.

1000 SIP trunks, with up to 200 concurrent calls on a single trunk
Four gigabit interfaces: WAN, AUX, EXP1 and EXP2
Dual hot standby — the only model in the range with redundancy at the system level
DID/DOD with a dedicated chapter: an extension or group can be bound to as many as four outside numbers
32 GB SD card storage
Extension status subscription and dual-power status indication

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OM1000-UC IP PBX front panel with PWR, STU and ALM LEDs, console port, four RJ45 sockets and SD card slot

A SIP core, not an analog box

The OM1000-UC has no FXS or FXO ports. Every call is SIP, which is why it reaches 1000 trunks and adds redundancy the analog models do not offer.

Four gigabit sockets — WAN is the primary uplink, AUX and EXP1/EXP2 are auxiliary and expansion
Default WAN address is 10.20.2.240; AUX and expansion ports default to 192.168.2.2
32 GB SD card holds recordings, voicemail and voice prompts
Port capture is not available on this model

DID and DOD

Direct inward dialling binds an outside number straight to an extension or a group, bypassing the auto attendant. Direct outward dialling presents the matching outside number on calls the extension makes.

An extension or extension group can be bound to up to four outside numbers
Outbound mode can be shared across extensions, or dedicated to the bound number
Useful where a team must present a single public number regardless of who dials

Dual hot standby

This is the only PBX in the OM range that supports dual hot standby. Where a dropped call has a real cost, it is the reason to specify the OM1000-UC rather than the OM200G.

The manual states the feature but not a failover time; we do not publish a number we cannot verify.

Product gallery

OM1000-UC rear panel with power input and grounding point

Where it fits on site

Multi-site enterprise

Up to 1000 SIP trunks and multi-site networking with either unique or repeatable extension numbering.

Contact centre

DID routes public numbers straight to groups, with call queues and satisfaction surveys.

SIP trunk consolidation

Replaces a site full of analog lines with SIP trunks and a redundant core.

Specifications

Capacity

Maximum SIP trunks	1000
Concurrent calls per trunk	200
Analog ports	None — SIP only
Ring group members	Up to 60 extensions
Route table entries	500
Departments	Up to 32

Interfaces & storage

Ethernet	4 × gigabit: WAN, AUX, EXP1, EXP2
Default IP	WAN 10.20.2.240; AUX and expansion 192.168.2.2
Storage	32 GB SD card
Console	CON
Power	100–240 V AC, single supply

Features & management

Dual hot standby	Yes
DID/DOD	Yes, with a dedicated manual chapter
Dual power status indication	Yes
Extension status subscription	Supported
Recording	Remote only
Port capture	Not supported
Initial admin password	admin

iSpecifications are taken from the OM series product manual. The manual describes storage in more than one way; confirm the exact storage fitted on the quotation.

Choosing between options

Model	Specifications
OM20G	Up to 4 analog ports · 24 SIP trunks · 16 GB storage · 3G/4G USB modem
OM50G	Up to 12 analog ports · 62 SIP trunks · Local + remote recording · OpenVPN client
OM80E	Up to 48 analog ports · 216 SIP trunks · AC 100–240 V or −48 V DC · Remote recording
OM200G	4 hot-swap slots · Up to 96 analog ports · 496 SIP trunks · 2 × gigabit Ethernet
OM1000-UC	1000 SIP trunks · 4 × gigabit interfaces · Dual hot standby · DID/DOD support

Compatibility boundaries

This model uses standard SIP and the interfaces listed in the specification table. Confirm the PBX, SIP provider or platform against those interface notes before the order; where the documentation does not state a value, the table records it as not stated rather than estimating. PoE, analog port variants, power options and card compatibility are fixed at order time.

Handover, spares and support

Extension plan, provisioning and interface language can be prepared before dispatch. Remote support continues after handover. Spare-part, warranty and service terms are confirmed in the quotation for the models and quantity ordered, so they are not printed as a single figure here.

Where it sits in the system

SIP desk phones

Conference & accessories

Conference terminals and headsets on the same SIP network.

IP PBX systems

Compare against the OM200G when analog ports are also required.

Frequently asked questions

Can the OM1000-UC connect an analog line?

Not directly — it has no FXS or FXO ports. If you need to keep analog lines, put an ATA gateway on the SIP network, or choose the OM200G, which takes up to 96 analog ports.

What does dual hot standby cover?

It provides redundancy at the system level, and this is the only model in the OM range that supports it. The manual does not state a failover time, so ask us and we will confirm against the current firmware.

How many outside numbers can one extension present?

With DID/DOD, an extension or extension group can be bound to as many as four outside numbers, and outbound calls can present the bound number rather than a shared trunk number.

How many sites can be networked?

Multi-site networking supports two numbering schemes: unique numbers across the network, or repeatable numbers with a site prefix. The management site needs a fixed IP address; the others can use a domain name, or a NAT traversal address derived from the device MAC.

Standards referenced

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Planning an IP telephony project?

Send us the site type, the number of extensions or rooms and the areas to cover — we will come back with a configuration and quotation.