Annexes
Annex 1 - Common Communications Equipment and Terminology
Common name or acronym |
Full name |
Description and Use |
Codan |
Manufacturer's name |
High frequency radio system using voice
communication, commonly used in vehicles |
DAMA |
Demand Assigned Multiple Access
|
Satellite (VSAT) system which allows multiple lines of
telephone, fax and data to be transmitted via satellite |
DTS |
Digital Transmission System (proprietary
name) |
A successor to PACTOR, allowing the transmission of e-mail
messages by radio |
HF |
High Frequency |
Range of frequency of radio waves used for long distance
radio communication |
INMARSAT |
International Mobile Satellite Organization (originally
called International Maritime Satellite Organization)
|
Phone system which provides global phone, fax and data
transmission via satellite |
Factor |
Packetised Telex Over Radio |
System whereby printed messages can be sent by radio |
SATCOM |
Satellite Communications |
Generic term for any satellite communications system |
SATCOM A, B, C, M, Mini-M |
Refers specifically to INMARSAT terminals used by UNHCR |
Telephone system used for voice, fax and data communications.
The equipment comes in various sizes, from suitcase size to small laptop and
with varying capabilities from simple telex to video- conferencing |
SITA |
Soci International
de Tcommunications Anautiques |
An organization which provides a global communications
network for airline reservations and ticketing. It can also provide a
communications network for non-airline customers (e.g. UNHCR) |
UHF |
Ultra High Frequency (Higher than VHF)
|
Range of frequency of radio waves used for short distance
radio communication |
VSAT |
Very Small Aperture Terminal |
Satellite system which allows multiple lines of telephone,
fax and data to be transmitted via geo stationary satellite |
VHF |
Very High Frequency |
Radio waves used for short distance radio communications
(e.g. handsets or walkie-talkies) |
VHF Repeater |
Very High Frequency Repeater |
Equipment used to extend the range of VHF short distance
radio communications to a range of 20 to 80 km, depending on the topography
|
Annex 2 - Message Identification
The following instructions are for telecommunications operators
who need to keep a formal log of all messages received and transmitted
(including e-mail, fax and PACTOR). The principles are that in each case "HCR"
must appear in the prefix and whatever the type and means of communication, each
message must bear one number unique to that transmission for each addressee.
Components of the message identity are:
· Message from
Headquarters to the Field: HCR/aaaaa/9999
· Message from the
Field to Headquarters: aaaaa/HCR/9999
where aaaaa is the official UNHCR location
(Duty Station) code of the Field Office concerned, and 9999 is a four figure
sequential number starting at 0001 on the 1" of january each year.
· Between field
offices: aaaaa/bbbbb/HCR/9999
where aaaaa is the five letter location code
for the sending field office and bbbbb is the five letter location code
for the addressee, and 9999 = four figure sequential number, starting at
0001 on the 1" of January each year.
· To non-UNHCR
addressees: aaaaa/MSC/HCR/9999
There are two categories of four figure sequential
numbers which may be used:
Category A is used for communications between
Headquarters and field offices and between field offices with a considerable
message exchange. The number used would be the next in the series for
communications that year between the originator and addressee.
Category B is for UNHCR addressees who do not fall into
Category A and for non-UNHCR addressees. If there are many such messages, two
series may be used: UNHCR and non-UNHCR. All series or sequences restart at 0001
on the 1" of January.
Examples
Category A messages:
HCR/ANGLU/0123 means the 123rd message
from Headquarters to Luanda, Angola this year. ANGLU/HCR/0210 means the
210th message from Luanda, Angola to Headquarters this year.
ANGLU/RSAPR/HCR/0097 means the 97th message from Luanda to Pretoria,
South Africa this year (where Luanda and Pretoria use sequential
numbering).
Category B messages:
ANGLU/SENDA/HCR/0024 means a message from Luanda to
Dakar, Senegal, and which is the 24th Category B message this year
from ANGLU (where Luanda and Dakar do not use sequential
numbering).
If there is more than one addressee, a separate message identity
must be used for each. If the message is being sent to some addressees for
information only, this should be indicated in brackets after the respective
message identity. For example messages from Luanda to Headquarters for action,
copied to Dakar for information, would bear the following:
ANGLU/HCR/0124
ANGLU/SENDA/HCR/0024
(SENDA for
info)
In order that the system can work effectively any missing
sequential number in Category A must be reported to the other category A
addressee as soon as possible, and the last number of the year (or of a series)
must be reported to each category A addressee. If a category A number is
duplicated by mistake, correct this by allocating the next available number and
reporting this number to the addressee by a service (SVC) message. Note that the
SVC message itself should also be numbered. Indicate the date or subject to
avoid any danger of
confusion.