PPP-GPRS protocol is identical with the PPP protocol for MORSE, in
addition uses the menu SXe
.
MG100 is a variation on the MR400 radiomodem, equipped with GPRS in
place of the radio part. It allows for connecting points of the data
network via the GPRS network or inserting a GPRS section into the MORSE
network transmission path.
The data format is similar to the PPP protocol. A more detailed
description is contained in article Format of the UDP datagram IPGW for
MORSE. The PPP protocol is used in the M-IP-M
mode.
Regarding HW the modem board is connected to the GPRS module through
the SCC1 channel, which is why it is unavailable to the user. SCC2, SCC3,
and ETH0 channels and the ADIO analog and digital I/O module are
available. The SCC0 channel can be used subject to SCC0 being out of
operation for the time the service cable is connected.
Modem communication with the GPRS module is indicated by three LEDs
located by the antenna connector:
GS |
– GPRS status |
Tx |
– transmitting packets from the modem to the GPRS |
Rx |
– receiving packets from the GPRS module to the modem |
SW control is carried out using the PPP protocol by selecting
parameter “(g)prs mode:ON
“. Functions controlling the radio
part, which are contained in the SETR Main menu, are not functional. For
example, instead of monitoring the radio channel we use
“iMSIe1r
” for monitoring communication with the
network.
The GPRS module can have an assigned static IP address. It is then
always available to all network subscribers and is listed in their Art
tables:
-
as “default gw” in case it is the only owner of a fixed IP
address -
or in a pair with a MORSE address
dest: gw: 69000001 C0A80005 69000002 C0A80016
in the case of more known subscribers.
There must be at least one module with a static address in the
network.
If the GPRS module has an assigned dynamic IP address which changes
on each new login it must report at regular “(p)roxy timeout
“
intervals to the address of the module with the fixed address, which then
maintains a list of other subscribers in the Art
table.
The module can be put into idle mode by entering the specific
password “(s)ms passwd
“. It can be reactivated by sending an
SMS with the password to its telephone number.
When configuring the MG100 connect the network output of the node to
SCC1:
Ne1NS1
Nodes: retab Nid|address |M | u s | L N |l w n g|sTO Err Cent vTO hTO (0) 00461B02 - S00| - R00|0 0 0 0| 15 SERV OFF 304 30 (1) 6981AA01 S02 S00| - S01|0 0 0 0| 15 SERV OFF 304 30 (2) 00000000 S01 S00| - R02|0 0 0 0| 15 SERV OFF 304 30 (3) 00000000 S02 S00| - R03|0 0 0 0| 15 SERV OFF 304 30 (4) 00000000 S03 S00| - R04|0 0 0 0| 15 SERV OFF 304 30
SIe 1rN1
Channel to Node Interface: retranslation | user+service lim id N A t m | N A t Base m sec brc S e (0) 0 NO AR | 1 NO AR usr OFF NONE (1) 1 NO AR | 2 MASK 00000000/08 usr OFF NONE (2) 0 NO AR | 1 MASK 00000000/08 usr OFF NONE (3) 0 NO AR | 0 MASK 00000000/08 usr OFF NONE
Select the communication speed on SCC1 according to the GPRS module,
idle to 200 and the PPP protocol:
SPe 1b1152 1i200 1o2P
Since 07/2010 are GPRS routers MG100M2 and MG100M3 configured to
higher speed on the SCC1 port:
SPe 1b2304 1i200 1o2P SCCs: n m g b p8 i s XRC D G o (0)RS232 ASYNC SW 19200N81 5 1600 --- D 0 MARS-A (1)RS232 ASYNC SW 115200N81 200 1600 --- D 0 PPP (2)RS232 ASYNC SW 19200N81 5 1600 --- D 0 MARS-A (3)RS232 ASYNC SW 19200N81 5 1600 --- D 0 MARS-A
Set PPP protocol parameters (L)oc IP
and (R)mt
to zero,
IPmr(u):1500, (h)ayes simulator:OFF a (g)prs
mode:ON.
Important | |
---|---|
It is necessary set a non-zero value in (R)mt IP for the router |
PPP parameters: Wanted options: (L)oc IP:00000000h 0.0.0.0 (R)mt IP:00000000h 0.0.0.0 Got options: 00000000h 0.0.0.0 00000000h 0.0.0.0 mr(u):1500 (h)ayes simulator:OFF LCP m(a)gic:ON obsolete LCP ma(G)ic (sv465..sv479):OFF (F)lags:0 (g)prs mode:ON (i)nfo IPG(W) (q)uit >>
The items “Got options:
” are filled in automaticaly
after connecting to the BTS.
The current overview of accessible BTS, the information about the
module used and PPP protocol state provides the “(i)nfo
“
menu, e.g.:
Example for MG100M1… router, which is attached to GSM/GPRS
network. Timeout SXe r 1go = 120 sec
, row S denotes the
active BTS:
>>GPRS info: RSSI -61 dBm; registered home; GPRS attached. #MONI: EUROTEL - CZ BSIC:17 RxQual:0 LAC:0725 Id:20A7 ARFCN:48 PWR:-60dbm TA:0 #MONI: Cell BSIC LAC CellId ARFCN Power C1 C2 TA RxQual PLMN #MONI: S 17 0725 20A7 48 -60dbm 45 45 0 0 EUROTEL - CZ #MONI: N1 11 0725 95D7 520 -73dbm 17 33 #MONI: N2 16 0725 20A5 93 -88dbm 17 11 #MONI: N3 15 0725 0000 112 -95dbm 10 4 #MONI: N4 11 0725 95D5 524 -96dbm -6 -12 #MONI: N5 16 0725 209A 41 -98dbm 7 1 #MONI: N6 15 0725 20C0 87 -99dbm 6 0 next info in 87 sec (of 120) DEBUG: gprs_state 9, grps_attached 1, t0_state 0, last_itime 3s DEBUG: next dehryz in 1163 sec (of 1200) >>
Example for MG100M2… router,, which is attached to UMTS
network. Timeout SXe r 1go = 0 sec, only the active BTS is
displayed:
>>GPRS info: RSSI -65 dBm; registered home; GPRS attached. #MONI: EUROTEL - CZ PSC:53 RSCP:-73 LAC:0EE3 Id:ED99CFF EcIo:-9.5 UARFCN:10564 PWR:-64dbm DRX:32 SCR:848 DEBUG: gprs_state 9, grps_attached 1, t0_state 0, last_itime 7s DEBUG: next dehryz in 294 sec (of 300) >>
In menu IPG(W)
select the M-IP-M
mode and
long (t)imeout:8000
:
INTERNET PROTOCOL GATEWAY: M-IP-M: (A)rt:1; write (E)nable:ON (r)epeats:0002 (t)imeout:8000 (p)roxy timeout:300s (f)rag size:1500bytes (g)lue (append) up to:0packets IP-M-IP: (I)PArt:0 ...
(p)roxy timeout:300s
is used for the GPRS module with a
dynamic IP address and (p)roxy timeout:0s
is sufficient for
static addresses
There are three basic ways of filling in the Art table which menu
M-IP-M
refers to:
-
the GPRS module is the only one assigned with a static IP
address:-
table Art is empty, and is filled in automatically after
logging in other modules
-
-
the GPRS module has an assigned dynamic IP address:
-
the IP address of the module, which has a static IP address,
is written to “default gw
” in the Art table; see
example. This module with the static IP address then becomes the
router.
-
-
more modules have static IP addresses:
-
fill “
dest
” and “gw
” in the Art
table so that we get a translation table where the column “dest”
contains MORSE address and “gw
” the respective IP
addresses of other known CUs having the static addresses.
-
ART No 1: items: 0 default gw: C0A81234 (192.168.18.52 ) dest: gw: >>
Special parameters for the GPRS mode are found in menu: SXe
1g
Important | |
---|---|
Do not use the Init and Sync command in this menu. After choosing |
GSM/GPRS DIALER: (i)nit string (&K0\Q0&D0&C1): (p)in:0 (A)PN string: (n)umber:*99***1# (s)ms passwd: inf(o) timeout:1800 (d)ehryz timeout:1200 d(e)hryz mode:MODULE RESET+WARM RESTART (MG100i only) (q)uit >> GSM/GPRS/... DIALER: (i)nit string (&K0\Q0&D0&C1): (p)in:0 (A)PN string: (n)umber:*99***1# (w)ireless service select:AUTO ope(r)ator select:AUTO oper(a)tor code:0 (s)ms passwd: inf(o) timeout:1800 (d)ehryz timeout:1200 d(e)hryz mode:WARM RESTART (q)uit >>
(i)nit string (&K0\Q0&D0&C1): |
– AT commands which are executed on initialising the
|
p)in:0 |
– f the SIM card uses a PIN, enter it here. On entering an |
(A)PN string: |
– name used by the APN network, e.g.: profi.internet, |
(n)umber: |
–login number to the network, e.g.: |
(w)ireless service select:AUTO |
|
ope(r)ator select:AUTO |
– volba operátora, pro MG100x1,2,3,4 |
oper(a)tor code:0 |
– code for the ope(r)ator select, e.g. 23002 |
(s)ms passwd: |
– content of SMS message (min. 6 characters) to activate CU |
inf(o) timeout: |
– for testing. With period “
|
(d)ehryz timeout: |
– the CU monitors the incoming IP packets. If no packet |
d(e)hryz mode: |
|
-
11/2005 – release 740 – new description
-
08/2007 – BTS info example
-
05/2009 – release 10.0.85.0 – MG100i routers – menus SPe
1tL, SXe r 1ge -
03/2010 – release 10.0.98.0 – router MG100M4 – (i)nit string,
inf(o) timeout -
07/2010 – speed 230.4 kbps on SCC1 for MG100M2 and
MG100M3 -
12/2010 – (w)ireless service select, ope(r)ator select –
added