Support forum

Advanced Search

— Forum Scope —




— Match —





— Forum Options —





Minimum search word length is 3 characters - maximum search word length is 84 characters

sp_TopicIcon
how to calculate hexadecimal ValidityPeriod?
sp_NewPost Add Reply sp_NewTopic Add Topic
April 13, 2016
5:10 pm
alex
Guest
Guests

thanks a lot!

April 13, 2016
4:50 pm
Henk Helmantel
Admin
Forum Posts: 551
Member Since:
May 28, 2013
sp_UserOfflineSmall Offline

Hello Alex,

The hexadecimal value of the validity period (TP-VP) is defined by the relative validity period format in the 3GPP TS 23.040 specification. The definition of the relative validity period is as follows:

0 to 143 (0x00 to 0x8F)
(TP-VP + 1) x 5 minutes (i.e. 5 minutes intervals up to 12 hours)

144 to 167 (0x90 to 0xA7)
12 hours + ((TP-VP -143) x 30 minutes)

168 to 196 (0xA8 to 0xC4)
(TP-VP - 166) x 1 day

197 to 255 (0xC5 to 0xFF)
(TP-VP - 192) x 1 week

A validity period of 10 minutes has a value of 0x01, 15 minutes is 0x02.

Regards, Henk

April 13, 2016
3:49 pm
alex
Guest
Guests

hello!

I try to get idea how hexadecimal ValidityPeriod in GSM Modem Gateway can be calculated. I found it is written there 0x00 is equal to 5 minutes and 0xff is equal to 441 days. But how i can calculate for example 10 or 15 minutes?

Somewhere i found 0x23 is equal to 3 hours.

I cant bend my head around it - what is the logic of making HEX values?

Kindest regards, Alex

Forum Timezone: Europe/Amsterdam

Most Users Ever Online: 494

Currently Online:
7 Guest(s)

Currently Browsing this Page:
1 Guest(s)

Top Posters:

Member Stats:

Guest Posters: 364

Members: 0

Moderators: 0

Admins: 1

Forum Stats:

Groups: 2

Forums: 3

Topics: 532

Posts: 1844

Newest Members:

, Henk Helmantel

Administrators: Henk Helmantel: 551