DHCP options 189This string can be NULL terminated although the NULL is not requiredfor parsing.Notes:1. aaa and rrr are ASCII-encoded decimal numbers with a range of 0 to255. They identify the Action Code and Retry Count, respectively, for theassociated TPS server. Internally, to the IP Phone 2004, they are storedas one octet (0x00..0xFF). These fields must be no longer than three digits.2. The first server is always considered the primary, and the second serveralways considered secondary.3. If only one server is required, terminate the primary TPS sequenceimmediately with (.) instead of (;).Example: Norteli2004- A,iii.jjj.kkk.lll:ppppp,aaa,rrr4. The valid options are one server or two servers (0, 3, or other numbersare not allowed).5. The Action code values are:• 0 - reserved• 1 - UNIStim Hello (currently only this value is a valid choice)• 2 to 254 - reserved• 255 - reserved6. iii,jjj,kkk,lll are ASCII-encoded, decimal numbers representing the IPaddress of the server. They need not be three digits long because the (.)and (:) delimiters guarantee parsing. For example, ’001’, ’01’, and ’1’ areall parsed correctly and interpreted as value 0x01 internal to the IP Phone2004. These fields must be no longer than three digits each.7. ppppp is the port number in ASCII-encoded decimal. It need not be fivedigits long because the (:) and (,) delimiters guarantee parsing. Forexample, ’05001’, ’5001’, ’1’, and ’00001’ are all parsed correctly andaccepted as correct. The valid range is 0 to 65535 (stored internally inthe IP Phone 2004 as hexadecimal in the range 0 to 0xFFFF). This fieldmust be no longer than five digits.8. In all cases, the IP Phone 2004 treats the ASCII-encoded numbersas decimal values and ignores all leading zeros. More specifically, aleading zero does not change the interpretation of the value to be OCTALencoded. For example, 0021, 021, and 21 are all parsed and interpretedas decimal 21.Format of the IP Phone 2004 Terminal DHCP Site Specific optionThe following definition describes the Nortel IP Phone specific, Site Specificoption. This option uses the DHCP options 128 to 254 (reserved forsite-specific use, see RFC 1541 and RFC 1533) and must be returned bythe DHCP server as part of each DHCP OFFER and ACK message for theIP Phone 2004 to accept these messages as valid. The IP Phone 2004 pullsNortel Communication Server 1000WLAN IP Telephony Installation and CommissioningNN43001-504 01.02 StandardRelease 5.0 15 June 2007Copyright © 2004-2007, Nortel Networks.
