User's Manual

Parameter Description Default value Boundaries
Password The password
that must be
entered when
connecting to
the IP
Deskphone
through SSH,
SFTP.
None Non-null string Maximum: 49
characters
UI Properties for Device Settings SSH and SFTP parameters are as follows:
• The User ID field is empty and the Password field displays "****" when both SSH and
SFTP are disabled and applied.
• The user can enable SSH or SFTP.
• The user must provide a valid user ID and password when the User ID field is empty, and
an application (SSH or SFTP) is selected. If a valid user ID and valid password are not
provided, and the user presses the Apply context-sensitive soft key, one of the following
error message appears:
- Error: User ID size: 4-12 – appears if a valid user ID is not provided.
- Error: Password size: 4-12 – appears if a valid password is not provided.
- Error: User ID size: 4-12 Error: Password size: 4-12 – appear if
both a valid user ID and a valid password are not provided.
TCP/TLS operation overview
TCP is the alternative protocol the IP Deskphone uses when sending and receiving SIP
requests. Avaya recommends TCP for Avaya SIP-enabled entities.
When a server initiates a TCP or TLS connection to the IP Deskphone, the connection only
lasts as long as the server chooses to keep the connection open; a persistent connection is
not maintained by the IP Deskphone.
How the IP Deskphone uses TCP
TCP is a connection-based protocol, which means the IP Deskphone must first establish a
connection with a target. This is done using a three-way handshake. After the handshake
process is complete and a connection is made, the IP Deskphone can send data over the TCP
connection. The data, which makes up a SIP request, can now be sent and received by either
side of the communication.
TCP/TLS operation overview
SIP Software for Avaya 1100 Series IP Deskphones-Administration November 2012 223