Avaya 1110 Fundamentals page 390

Features
must be sent. See
page 390. Configure the DHCP server to send one or the other – not both.
The choice of using either Vendor Specific or Site Specific options is provided to enable
Windows NT DHCP servers to be used with the IP Phone. Windows NT servers do not properly
implement the Vendor Specific Option and as a result, Windows NT implementations must use
the Site Specific version.
Format of the Encapsulated Vendor Specific Sub-option field
The format of the field is as follows:
• Type (1 octet): 5 choices are provided (0x80, 0x90, 0x9d, 0xbf, 0xfb [128, 144, 157, 191,
251]), allowing the IP Phone to operate when one or more values is already in use by a
different vendor. Select only one TYPE byte.
• Length (1 octet): variable – depends on message content.
• Data (length octets): ASCII based with the following format:
Nortel-i2004 -A,iii.jjj.kkk.lll:ppppp,aaa,rrr;iii.jjj.kkk.lll:pppp,aaa,rrr.
The components in this string are described
Sub-option field
Table 84: Encapsulated Vendor Specific Sub-option field
Parameter
Nortel-i2004-A
iii.jjj.kkk.lll:pppp
p
aaa
rrr
ACSII symbols
Table 85: Nortel option string
Nortel designator Nortel-i2004-A is separated from the Connect Server strings using a comma.
The Connect Servers are separated using a semi-colon.
Table 85: Nortel option string
A,iii.jjj.kkk.lll:ppppp,aaa,rrr;iii.jjj.kkk.lll:pppp,aaa,rrr.
390 IP Deskphones Fundamentals
Format of the Encapsulated Vendor Specific Sub-option field
on page 390 .
Uniquely identifies this as the Nortel option
Signifies this version of this specification
Identifies IP address:port for server (ASCII encoded decimal)
Identifies Action for server (ASCII encoded decimal, range 0 to 255)
Identifies retry count for server (ASCII encoded decimal, range 0 to 255).
This string can be NULL terminated although the NULL is not required
for parsing.
The comma "," is used to separate fields
The semicolon ";" is used to separate Primary from Secondary server
information
The period "." is used to signal end of structure
on page 390 shows the "pieces" of the Nortel option string. The
Nortel-i2004-
Comments? infodev@avaya.com
inTable 84: Encapsulated Vendor Specific
Description
on
February 2013