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There are similarities and differences between the IP Office Branch solution and the Avaya Aura® Branch solution with G-series gateways. The differences are summarized below.
The IP Office solution offers flexible deployment options, IP Office services, and cost advantages that are not available with the Avaya Aura® Branch solution.
IP Office is not an H.248 gateway under Communication Manager control. IP Office is a telephony system or a SIP gateway connecting to Session Manager. The IP Office Branch solution is not limited to 250 gateways per Communication Manager. Up to 2000 IP Office branches can connect to Session Manager with a single core CM-ES or CM-FS.
Centralized users in the IP Office Branch solution cannot access many advanced features available to users in the Avaya Aura® Branch solution with G-series gateways. Differences in the IP Office solution include:
IP Office Branch offers basic survivability for centralized users with limited features in rainy-day. With the Avaya Aura® solution, users get consistent features in normal and survivable modes.
IP Office does not support IGAR. This is a Communication Manager feature to send media over the PSTN instead of the WAN when the Session Manager Call Admission Control limit is reached.
Calling and basic features possible between centralized users andIP Office users in a Mixed branch, but no group features such as bridging or Call Pickup.
No synchronization of provisioned or dynamic data between the central Communication Manager and IP Office, except for centralized user basic configuration fields, such as name, extension, and password, in System Manager.
Short service disruption of up to 3 minutes for centralized users after failover occurs.