Avaya IP403 Office 700210610 IP PBX 8-DS 2-POT 8-Port LAN WAN Small Business

Avaya IP403 Office 700210610 IP PBX 8-DS 2-POT 8-Port LAN WAN Small Business

The Avaya IP403 Office is a compact IP PBX designed for small business telephony, identified by Avaya product ID 700210610. It integrates digital station (DS) ports, analog telephone ports, a built-in Layer 2 LAN switch, and a WAN interface into a single desktop chassis running software version GBT-1.1(23). This unit powers on but has not been fully tested and is being sold AS-IS for parts or repair.

Specifications & What's Included

• Avaya Model: IP403 Office — Product ID 700210610 (IP403 OFFICE DS - PCS 5)
• Digital Station (DS) Ports: 8 x RJ45 (front panel, labeled 1–8)
• Compatible DS phones: 24xx, 44xx, 54xx, and 64xx Series; also 3810 and 9040
• Analog Telephone (POT) Ports: 2 x RJ11 (front panel, labeled 1–2)
• LAN Ports: 8 x 10/100 Mbps switched RJ45 + 1 Uplink (front panel, Layer 2)
• WAN Interface: X.21 / V.35 (rear Slot A area, DB44-style connector)
• DTE Port: DB25 (rear panel) — for maintenance or serial dongle / PC-less licensing
• Analog Trunk Ports: 4 x RJ11 (Slot A, rear panel)
• Expansion Ports: 3 x RJ45 (rear panel, labeled 1–3)
• Expansion Slots: Slot A (Analog Trunk card installed), Slot B (Compact Flash bay)
• Optional embedded voicemail/auto-attendant via Compact Flash card (Slot B — CF card not confirmed present)
• USB port (rear panel)
• Audio port: 3.5mm jack (rear panel)
• Power: 24V DC, 2A (external DC input)
• Certifications: UL Listed (1RD6, I.T.E.), FCC ID: US:AV1DY04BIP403DS, IC: 3794D-IP4036
• Form factor: Desktop

Applications

The Avaya IP403 Office belongs to the Avaya IP Office family, a widely deployed small and medium business (SMB) telephony platform introduced by Avaya (formerly Lucent Technologies / AT&T) in the early 2000s. The IP403 variant was designed for sites with up to approximately 32 users, serving as the central call controller for digital desk phones, analog extensions, and trunk lines. Its integrated 10/100 LAN switch allowed the PBX and phones to share a single network infrastructure, while the X.21/V.35 WAN port enabled direct connection to leased-line or ISDN PRI circuits. The optional Compact Flash voicemail module allowed embedded auto-attendant and voicemail functionality without a separate server. IP403 systems were commonly found in small offices, branch locations, and retail environments that used Avaya 2400, 4400, 5400, and 6400 series digital handsets. These systems have largely been superseded by VoIP-centric platforms, but IP403 units continue to be sought for replacement parts, legacy site support, and system restoration.