Avaya IP Office Internal Daughter Cards are fitted inside the base module of the IP403, IP406 and IP412 platforms and add voice compression or modem features that allow businesses to easily and quickly extend Voice over IP (VoIP) and remote access benefits to a growing number of users.

IP400 PRI 48 T1 Expansion Kit is an interface card for the IP403, IP406 and IP412, providing 2 x T1/PRI (48 lines) ports.

the IP400 Office PRI card provides dual primary rate trunk interfaces. The PRI is available as either T1, E1 or E1R2MFC depending on the market. Its is only supported on the IP412 and in slot A of the IP406. T1 trunk cards incorporate an integrated CSU/DSU, eliminating the need for an external unit. The CSU function allows the trunk to be put in loop-back mode for testing purposes. This can be set manually, using the monitor application, or automatically from a Central Office sending a Line Loop Back (LLB) pattern. The DSU function allows the T1 trunk to be shared between data and voice services

Product also known as: