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DATAPAC NETWORK MESSAGES
Service - DATAPAC 3101 (ITI) .
Explanation of Datapac 3101 "Call Connected: Message"
-----------------------------------------------------
When a Datapac 3101 call is established through the network, a call connected
message is received at the originating DTE. All or some of the following
messages may be identified depending on the type of call, options used for
the call, and the type of destination.
Example:
DATAPAC: call connected to XXXXXXXX (DNA)
[HUNTED] [BACKED UP] [BACKED UP & HUNTED]
[i LCN] [P/N PACKETSIZE: (128 OR 256)] [NUI (6 to 8 CHAR)CHARGING]
[CUG:(CUG#)] [REVERSE CHARGE]
MESSAGE EXPLANATION
------- -----------
Call connected to: XXXXXXXX A virtual circuit has been established
between an originating DTE and a remote
(receiving) DTE.
Hunted The remote logical channel is part of
a hunt group.
Backed Up The call attempt to the remote DTE has failed.
The network has re-directed the call to
another predetermined DTE that has been
optioned as backup.
i The call has been placed to an international
address.
P Priority service. Packet size: 128.
N Normal service. Packet size: 128 or 256.
DNA Data Network Address of the originating DTE.
LCN Logical Channel Number of the recipient DTE.
NUI The call will be billed to the 6 to 8
character Network User Identifier.
CUG The recipient DTE is part of a closed user
group.
Reverse Charge The recipient DTE has accepted the charge
associated wih the established call.
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DATAPAC NETWORK MESSAGES
1 NATIONAL SERVICE
2 INTERNATIONAL SERVICE
3 DATAPAC 3101 (ITI) .
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DATAPAC NETWORK MESSAGES
Service - NATIONAL SERVICE
EXPLANATION OF NETWORK MESSAGES
===============================
Datapac Domestic Service
------------------------
There are thrity-three messages which may appear when you are
accessing the Datapac network. All of these network-generated
messages which are sent to a terminal, are written as "Datapac:
text". The "text" will be one of the following messages:
TEXT EXPLANATION
(a) ADDRESS This is a Datapac herald message for an SVC
terminal. The "address" displayed is your
Datapac network address. This message
indicates that you are connected to the
Datapac network. Proceed with the call
request command.
(b) {P,R} TERMINAL This is a Datapac herald message for a PVC
terminal. It indicates that you are
(DESTINATION connected to the network (address and
ADDRESS LOGICAL destination address)
CHANNEL)
(c) CLOSED USER GROUP These messages indicate an error in the call
ERROR INVALID request command--correct and re-enter the
ADDRESS, MORE command.
THAN 12 DATA
CHARACTERS, or
COMMA REQUIRED
BEFORE DATA
CHARACTERS
[P][R]
(d) CALLED BY or This message indicates that a host or
[N][I] terminal has called you. Proceed with
ADDRESS (XXX) sign-on. (Note: P or N denotes grade of
service. R specifies the charging option,
if applicable. I specifies that it is an
international call. (XXX) specifies the
logical channel number if it is a national
call, and specifies the gateway id if it
is an international call.
(e) CALL CONNECTED This message indicates that the SVC
connection between your terminal and the
destination has been established
successfully.
(f) RE-ENTER This message indicates that a transmission
error has occurred in the current input line.
Re-enter the line. If the problem persists,
report the trouble to Telecom Canada.
(g) INPUT DATA LOST This message indicates that a transmission
error has occurred. Since part of your input
line has already been transmitted to the
destination, enter a "line delete" character
for your application and a carriage return
(CR). When the destination replies, re-enter
the line.
(h) PARITY ERROR This message indicates that a parity error
has occurred in the current input line from
a terminal which is operating in echo mode.
The character which is in error is not
echoed. Re-enter the character and continue
normal input. If the problem persists,
report the trouble to Telecom Canada.
(i) INPUT ERROR This message indicates that there is a
network problem, due to overruns. If the
problem occurs often, contact Telecom
Canada.
(j) PVC - This message indicates that a network problem
DISCONTINUED is preventing the requested call from
TEMPORARY continuing. Wait for the Datapac herald
NETWORK PROBLEM message, then continue. If the condition
persists, contact Telecom Canada.
(k) PVC This message indicates that either the access
DISCONTINUED - line to the destination, or the destination
DESTINATION itself is down. Try again later. If the
NOT RESPONDING condition persists, contact the destination.
(l) PVC This message indicates that the desti-
DISCONTINUED - nation has asked that the connection be
REMOTE REQUEST discontinued.
(m) INVALID COMMAND This message indicates that there is a
syntax error in the command. Correct it
and re-enter the command.
(n) COMMAND This message indicates that the command
NOT ALLOWED which was entered, although syntactically
correct, cannot be implemented either due
to the NIM state, or because it violates
and/or conflicts with the service options
selected --e.g., a call request command,
when an SVC is already established.
(o) CALL CLEARED-- This message indicates that the destination
DESTINATION BUSY computer cannot accept another call. Try
again later.
(p) CALL CLEARED-- This message indicates that the call request
INCOMPATIBLE command includes facilities which are not
CALL OPTIONS available at the destination or are
incompatible with it. Verify and try the
call again. If the problem persists, contact
the destination.
(q) CALL CLEARED-- This message indicates that a network
TEMPORARY problem has occurred--try again later.
NETWORK PROBLEM If the problem persists, report it to
Telecom Canada.
(r) CALL CLEARED-- This message indicates that the desti-
DESTINATION NOT nation is either not acknowledging your
RESPONDING request to connect or it is inoperable.
Try again later. If the problem persists,
contact the destination.
(s) CALL CLEARED-- This message indicates that the network has
ACCESS BARRED blocked your call because of a Closer User
Group violation. Verify the call establishment
procedures with the destination.
(t) CALL CLEARED -- This message indicates that the network
ADDRESS NOT IN address in the call request command
SERVICE identifies a non-existent destination--
i.e., the address is not yet (or is no
longer) assigned. Verify the address
and re-enter the call request command.
If the condition persists, contact the
destination.
(u) CALL CLEARED -- This message indicates that the desti-
COLLECT CALL nation is not willing to accept the charges
REFUSED for the connection (e.g., it does not
accept calls from Datapac 3101 public
dial ports). Verify the call establish-
ment procedures and try the call again.
If the condition persists, contact the
destination.
(v) CALL CLEARED -- This message indicates that a network
LOCAL PROCEDURE protocol error has occurred. Try the
ERROR call again. If the condition persists,
report the trouble to Telecom Canada.
(w) CALL CLEARED -- This message indicates that a destination
REMOTE PROCEDURE protocol error has occurred. Try the call
ERROR again. If the condition persists, contact
the destination.
(x) CALL CLEARED -- This message indicates that a virtual circuit
LOCAL DIRECTIVE has been cleared in response to a clear
command from a terminal user.
(y) CALL CLEARED -- This message indicates that a virtual circuit
REMOTE DIRECTIVE has been cleared in response to a clear
request packet from the destination.
(z) CALL CLEARED -- This message indicates that a virtual circuit
REMOTE REQUEST has been cleared in response to an invitation
from the destination to clear the call.
(aa) RESET-TEMPORARY This message indicates that a network problem
NETWORK PROBLEM has occurred on the PVC connection. Wait for
the Datapac herald message, then continue.
If the condition persists, report the trouble
to Telecom Canada.
(bb) RESET-DESTINATION This message indicates that the destination
NOT RESPONDING end of the PVC connection is not responding--
i.e., either the access line to the
destination, or the destination itself, is down.
Try again later. If the condition persists, contact
the destination.
(cc) RESET--LOCAL This message indicates that the PVC has been
PROCEDURE ERROR reset because of a network protocol error.
Wait for the Datapac herald message, then
continue. If the condition persists, report
the trouble to Telecom Canada.
(dd) RESET--REMOTE This message indicates that the PVC has been
PROCEDURE ERROR reset because of the destination protocol
error. Wait for the Datapac herald message,
then continue. If the condition persists,
contact the destination.
If the host computer is connected via the
ITHI option, this message indicates that data
has been disregarded due to the host not
reacting to flow control conditions sent by
the PAD.
(ee) RESET--LOCAL This message is the network's response to a
DESTINATION reset command from the terminal user.
Continue.
(ff) RESET--BY This message indicates that the destination
DESTINATION has reset the virtual circuit. Data may have
been lost. Continue. If the condition
persists; report it to the destination.
(gg) RESET-TEMPORARY These messages indicate that the network
NETWORK PROBLEM has reset the switched virtual circuit. Data
or may have been lost. Continue. If the problem
RESET--LOCAL persists, report it to Telecom Canada.
PROCEDURE ERROR
DATAPAC NETWORK MESSAGES
Service - INTERNATIONAL SERVICE
DATAPAC INTERNATIONAL
=====================
There are several messages which may appear when you are accessing
foreign packet switching networks through the Datapac X.75 gateways.
All of these network-generated messages which are sent to a terminal,
are written as "DATAPAC:TEXT". The TEXT will be one of the following
messages. These messages may originate from within DATAPAC or from
within any foreign network that is involved in the call or call
attempt.
(a) CALL CLEARED -- A network problem within a Datapac
TEMPORARY NETWORK or foreign network prevents either
PROBLEM (XXY) the requested call from being established
or the established call from being
continued. Try again later.
(b) CALL CLEARED -- Either the foreign network requested is not
ADDRESS NOT IN accessible from Datapac, or the foreign
SERVICE (XXY) network address specified identifies a non-
existent destination, i.e., the address is
not yet assigned or no longer assigned.
Verify with destination that the foreign
network is accessable from Datapac and that
the foreign network address is assigned.
(c) CALL CLEARED -- The calling terminal is not permitted to
ACCESS BARRED establish an international call to the
(XXY) called destination address because of a
closed user group violation. Verify
network address with destination.
(d) CALL CLEARED -- Either the foreign network or the desti-
COLLECT CALL nation address is not willing to accept
REFUSED (XXY) the collect calls. Verify the call
establishment procedures with destination.
(e) CALL CLEARED -- The Call Request is considered invalid
INCOMPATIBLE by the foreign network mainly because of
CALL OPTIONS the incorrect number of digits in the
(XXY) foreign network address. Verify foreign
network address with destination.
(f) CALL CLEARED -- The destination is out of order, possibly
DESTINATION NOT because the destination's network access
RESPONDING (XXY) link is inoperative. Try again later
and verify with destination.
(g) CALL CLEARED -- The destination address called is fully
DESTINATION BUSY engaged (no logical channels available)
(XXY) and cannot accept another call at this
time. Try again later.
(h) CALL CLEARED -- This message indicates a protocol error at
REMOTE PROCEDURE the remote DTE interface. Check with remote
ERROR (XXY) DTE (destination).
Gateway Identification
----------------------
The network generated messages sent to Datapac ITI terminals include
a 3-digit field to identify the gateway involved. This field is
shown as (XXY) for the network messages listed in above.
If the call has not been established, the XXY = 000. If the call has
been established, then
XX = 2-digit Datapac Service Exchange (DSE) of the gateway node used
for the call
Y = Gateway ID of the gateway used for the call.