Adjunct considerations
Issue 1.1 June 2005 91
Music on Hold
The ESS server can provide Music on Hold only if the music source is in control of the ESS
server. Calls to an ESS server without a music source hears silence.
Adjunct considerations
When a failover occurs, an ESS server may or may not have connectivity to various adjuncts.
This section highlights how a failover would affect the following adjuncts:
● Call Detail Recording (CDR) on page 91
● Call Management System (CMS) on page 92
● EC500 on page 92
● Property Management System (PMS) on page 92
● Voice Mail (Audix, Intuity, Octel, Modular Messaging) on page 92
● Voice Response Systems (Conversant) on page 92
Call Detail Recording (CDR)
CDR is connected to the server through a CLAN and IP network. The CLAN for each CDR is
specified in translations. In the event a failure and fragmentation occurs, call details for
completed calls will be collected. The server controlling one or both of the CLANs through which
the CDR data is sent, will attempt to deliver the records to the CDR output device. If the network
is intact to the device, the call records will be delivered. If the server knows that the CDR device
is not connected, it will store the records in a buffer. If the server does not control the Port
Network(s) with the CLAN(s), it will buffer the records. When the system restores and all Port
Networks return to the control of the Main server(s), any records buffered by the Main server(s)
will download to the CDR output link. The buffer size of the output link is the same as the S8700
Server buffer. Other records that were not delivered to the CDR adjuncts and buffered in an
ESS server will be unrecoverable, as the ESS server will perform a restart.
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