What is the Juniper Networks SIB3-PTX5K-S-B?
The Juniper Networks SIB3-PTX5K-S-B is a network switch, listed by the manufacturer as "SWITCH INTERFACE BOARD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
CircularTelecomParts Catalogue

Part Overview
The Juniper Networks SIB3-PTX5K-S-B is a network switch — originally specified as "SWITCH INTERFACE BOARD" — available refurbished or as surplus stock via Circular Telecom, supporting network operators sourcing decommissioned and reclaimed equipment.
Common Questions
The Juniper Networks SIB3-PTX5K-S-B is a network switch, listed by the manufacturer as "SWITCH INTERFACE BOARD". It is part of Circular Telecom's surplus and refurbished telecom/IT equipment inventory.
Circular Telecom sources and resells surplus and refurbished Juniper Networks network equipment, including parts such as the SIB3-PTX5K-S-B, subject to current availability. Contact Circular Telecom for a live quote.
Circular Telecom Catalogue