Nortel Networks NN43001-504 User Manual

Page 189

DHCP options

189

This string can be NULL terminated although the NULL is not required
for parsing.

Notes:

aaa and rrr are ASCII-encoded decimal numbers with a range of 0 to
255. They identify the Action Code and Retry Count, respectively, for the
associated TPS server. Internally, to the IP Phone 2004, they are stored
as one octet (0x00..0xFF). These fields must be no longer than three digits.

The first server is always considered the primary, and the second server
always considered secondary.

If only one server is required, terminate the primary TPS sequence
immediately with (.) instead of (;).
Example: Norteli2004- A,iii.jjj.kkk.lll:ppppp,aaa,rrr

The valid options are one server or two servers (0, 3, or other numbers
are not allowed).

The Action code values are:

•

0 - reserved

•

1 - UNIStim Hello (currently only this value is a valid choice)

•

2 to 254 - reserved

•

255 - reserved

iii,jjj,kkk,lll are ASCII-encoded, decimal numbers representing the IP
address of the server. They need not be three digits long because the (.)
and (:) delimiters guarantee parsing. For example, ’001’, ’01’, and ’1’ are
all parsed correctly and interpreted as value 0x01 internal to the IP Phone
2004. These fields must be no longer than three digits each.

ppppp is the port number in ASCII-encoded decimal. It need not be five
digits long because the (:) and (,) delimiters guarantee parsing. For
example, ’05001’, ’5001’, ’1’, and ’00001’ are all parsed correctly and
accepted as correct. The valid range is 0 to 65535 (stored internally in
the IP Phone 2004 as hexadecimal in the range 0 to 0xFFFF). This field
must be no longer than five digits.

In all cases, the IP Phone 2004 treats the ASCII-encoded numbers
as decimal values and ignores all leading zeros. More specifically, a
leading zero does not change the interpretation of the value to be OCTAL
encoded. For example, 0021, 021, and 21 are all parsed and interpreted
as decimal 21.

Format of the IP Phone 2004 Terminal DHCP Site Specific option

The following definition describes the Nortel IP Phone specific, Site Specific
option. This option uses the DHCP options 128 to 254 (reserved for
site-specific use, see RFC 1541 and RFC 1533) and must be returned by
the DHCP server as part of each DHCP OFFER and ACK message for the
IP Phone 2004 to accept these messages as valid. The IP Phone 2004 pulls

Nortel Communication Server 1000

WLAN IP Telephony Installation and Commissioning

NN43001-504

01.02

Standard

Release 5.0

15 June 2007