If WAN connectivity to the Avaya Aura® Session Manager is lost or if all deployed Avaya Aura® Session Manager servers are down, centralized users automatically get basic telephony services from the local IP Office with survivability or rainy day mode. The telephony features provided by the IP Office in rainy day mode are limited compared to the features that are normally provided to the centralized phone.

The following features are available on Centralized SIP phones when registered to IP Office in Rainy day mode:

• Make or receive calls to or from other endpoints in the branch and to or from any type of local PSTN trunk

• Caller ID

• Multiple call appearances but not bridged appearances

• Call hold and consultative hold

• Music on hold

• Attended call transfer

• Unattended call transfer

• Three-party ad-hoc conferencing done locally on the phone, as well as capability to dial into Meet-Me conferencing on IP Office up to 64-party conference

• Centralized voice mail coverage and access over PSTN, but no Message Waiting Indication (MWI)

• Automated Attendant

• Survivability mode indication on the phone screen

• Local telephone features: redial, mute, audio selection (speaker / headset / handset), Call Logs, Volume Control, local contacts, speed-dials, auto dials

• Station Message Detail Recording (SMDR) records stored on the IP Office for retrieval after WAN recovery

• Hunt groups

  IP Office can be configured with Centralized hunt groups for which IP Office processing is in effect only in the Rainy day mode. The IP Office administrator must configure the hunt groups on the IP Office consistent with the configuration on the central Avaya Aura® Communication Manager for the Sunny day mode.

• Call Management

  IP Office can be configured with short codes using the Barred feature to restrict in the Rainy day mode what calls the Centralized user can make. The IP Office administrator must configure this consistent with the Class of Restriction (CoR) configured on Communication Manager, which is applied to the same user in the Sunny day mode.

• Send call to mobile phone

  IP Office can be configured with Mobile Twinning to send calls for the Centralized user in the Rainy day mode to a mobile number. The IP Office administrator must configure this on the IP Office consistent with the EC500 configuration on the central Communication Manager for the same Centralized user.

• Call forwarding

  Local Call Forwarding on the phone in the Rainy day mode can be configured. The Call Forwarding set on Communication Manager in the Sunny day mode has no impact on the local behavior of the phone or on the IP Office behavior in the Rainy day mode. Also, the local Call Forwarding set on the phone works only in the Rainy day mode after failback.

• Authorization codes

  IP Officecan be configured to support authorization codes that Centralized users can use in the Rainy day mode. The IP Office administrator must configure authorization codes consistent with the authorization codes configured on Communication Manager, which are available to the same Centralized users in the Sunny day mode. Centralized SIP phone users in Sunny day will hear 3 beeps to indicate that an authorization code is required. In the Rainy day mode, the Centralized SIP phone users will hear 1 beep that repeats approximately every 5 seconds.