Lucent Technologies 6000 - Manual (Page 347)

Configuring IP Fax
Atlas redialer and DID support on MAX 6000 units
MAX 6000/3000 Network Configuration Guide 7-13
Specifying the type of redialer
You can select the type of redialer for incoming fax calls by setting the Dialer Type
parameter, in the IP Fax Options profile to specify Mitel or Atlas. In previous software
releases, MAX units supported only the Mitel redialer.
DID on inbound IP fax calls
Every DID subscriber, such as a network user or network device (such as a printer) receives a
DID number. To send a fax to a network user or device, senders simply dial the fax
subscriber’s DID number, and that call is connected to a MAX unit.
When a MAX unit detects an incoming fax call, it authenticates the call by comparing the DID
number received from the DID trunk to the DID numbers specified by the DID #N parameter
in the IP Fax Options profile. If the numbers match, the unit initiates a connection with the fax
server by sending an incoming fax authentication packet (IFAP) to the fax server for
authentication. The incoming fax authentication packet includes the following information:
• Line identifier
• DID number
• Caller ID (if available)
In response to the IFAP, the fax server sends a fax connection response packet (FCRP) that
contains one of the following messages:
• + FCRP-NACK—The fax server is unable to handle the call.
• + FCRP-ACK—The fax server is able to handle the call.
After successfully establishing a connection with the fax server, the MAX unit forwards the
fax to the fax server.
If the first server fails to accept the call, the MAX unit attempts a connection with the next fax
server, and so forth. After a connection has been established with a fax server, the MAX unit
continues to use that particular fax server for subsequent calls until the connection to that fax
server fails. The MAX unit then attempts to connect to the next fax server specified by the
Server #N (N=1-5)
parameter.