NPT 1800 Family – AR Router Series Aggregation Router Optimized for High Availability The NPT 1800 family of aggregation routers is designed for next generation services and applications. With a fully redundant, modular architecture and service-aware packet transport, the NPT 1800 router family is optimized for operators requiring a high-availability multiservice packet transport solution. There are two variants of the NPT 1800: • NPT 1800 - supports IP/MPLS and MPLS-TP and provides coherent routing (IPoDWDM) with a full set of optical interfaces NPT 1800 R - supports IP/MPLS only and does not provide IPoDWDM NPT 1800 provides 2 Tbps switching capacity, 100G interfaces in an 8RU form factor. NPT 1800 uses Ribbon’s industry proven IP Wave rNOS network operating system to efficiently aggregate and route services over the network, meeting their service performance needs (SLAs) on a service-by-service basis. With such a rich and robust feature-set, NPT 1800 is well suited for a wide variety of applications and networking scenarios, these include: • Converged Aggregation for the Intelligent Middle Mile: Supporting 5G xHaul, broadband backhaul, business services, and TDM migration all from a single converged platform 5G backhaul: with 5G specific functionality including, Class C timing, Segment Routing, EVPN, network slicing and 5G interfaces Aggregation for Business services: provides packet transport to meet service SLA’s on a per service basis TDM migration: supporting voice trunk and legacy service migration with circuit emulation services (CES) mapping a full range of legacy TDM interface speeds onto the packet switched network (PSN) High Performance Edge 8000 Fiber & Wireless Access Access Aggregation and Pre-Aggregati

L2VPN - MEF 3.0 (IP-MPLS and MPLS-TP) • E-Line Ethernet Virtual Private Network (EVPN) • Virtual Private Wire Service (EVPN-VPWS, EVPN-ELINE) • Virtual Private LAN Services (EVPN-VPLS, EVPN-ELAN) • Anycast IRB with IPv4 and IPv6 support • Multihoming - Active-Active, Single-Flow-Active, Port-Active • PW Virtual Ethernet Segment Ethernet Virtual Private Network (EVPN) • Virtual Private Wire Service (EVPN-VPWS, EVPN-ELINE) • Virtual Private LAN Services (EVPN-VPLS, EVPN-ELAN) • Anycast IRB with IPv4 and IPv6 support • Multihoming - Active-Active, Single-Flow-Active, Port-Active • PW Virtual Ethernet...

Software features provided by the NPTs IP-Wave rNOS Specification Layer 2 forwarding and bridging Bridge Domains (BD) Flexible VLAN-Tagging IEEE 802.1Q VLANs and Q-in-Q Ethernet Link Aggregation Group (LAG) Link Aggregation Control Protocol (LACP) 802.3ad G.8032 Spanning Tree Protocol Jumbo frames on all ports IPv4 and IPv6 unicast routing Layer 3 interfaces: physical interfaces and logical interfaces (Units). Virtual Routing and Forwarding (VRF) Open Shortest Path First (OSPFv2, OSPFv3) Intermediate System to Intermediate System (ISIS) Multiprotocol Border Gateway Protocol (MP-BGP) Equal-Cost...

Software features provided by the NPTs IP-Wave rNOS (continued) Description PIM-SM, PIM-SSM, PIM-ASM PIM-SM, PIM-SSM, PIM-ASM Quality of Service (Qos) Class-based 3-level Hierarchical QoS Virtual Output Queueing (VOQ) Policing, Shaping Multi-level priority queuing Classification based on L2/L3/L4 fields Class-based 3-level Hierarchical QoS Virtual Output Queueing (VOQ) Policing, Shaping Multi-level priority queuing Classification based on L2/L3/L4 fields Timing and Synchronization Remarking Weighted Random Early Detection (WRED) Deep packet buffer IEEE 1588v2 - T-GM, T-BC, APTS G.8275.1, G.8275.2...

Software features provided by the NPT's IP-Wave rNOS (continued)

Standards compliance Specifications subject to change without notice Contact us to learn more about Ribbon solutions. Ribbon Communications (Nasdaq: RBBN) delivers communications software, IP and optical networking solutions to service providers, enterprises and critical infrastructure sectors globally. We engage deeply with our customers, helping them modernize their networks for improved competitive positioning and business outcomes in today's smart, always-on and data-hungry world. Our innovative, end-to-end solutions portfolio delivers unparalleled scale, performance, and agility, including...