GPRS Service Configuration Mode Commands

GPRS Service Configuration Mode Commands
 
 
The GPRS Service Configuration Mode is used within the context configuration mode to define the criteria the SGSN needs to operate within a GPRS network. The GPRS Service works with other services, such as SGSN GPRS Tunneling Protocol (see SGTP Service Configuration Mode Commands) and Mobile Application Part (see MAP Service Configuration Mode Commands), to handle communication parameters required to work with other network entities such as the base station subsystem (BSS).
The prompt for this mode appears as:
[context_name]hostname(config-gprs-service)#
 
Important: The commands or keywords/variables that are available are dependent on platform type, product version, and installed license(s).
 
accounting
Defines the accounting context name and enables/disables specific types of CDR generation for the accounting in the GPRS service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
accounting { cdr-types { mcdr | scdr | sms { mo-cdr | mt-cdr } + | context cntx_name }
default accounting cdr-types
no accounting ( cdr-types | context }
default
Returns the system to default CDR generation which includes M-CDR, S-CDR, and SMS CDRs.
no
Disables all CDR types.
cdr-types { mcdr | scdr | sms { mo-cdr | mt-cdr }
Default: all types enabled.
Defines the types of CDRs to be generated within the specified GPRS service for accounting:
•
mcdr : Enables generation of M-CDRs.
•
scdr : Enables generation of S-CDRs.
•
sms : Enables generation of SMS-type CDRs based on one of the following:
•
mo-cdr : SMS CDRs orignates from the mobile.
•
mt-cdr : SMS CDRs terminates at the mobile.
+
This symbol indicates that more than one keyword can be used and repeated. This enables you to include more than one type of CDR selection in a single command.
context cntx_name
Specifies an accounting context to be associated with the GPRS service.
cntx_name : Define a string of 1 to 79 alphanumeric characters.
Usage
Use this command to define the type of CDRs to generate for GPRS service. By default all types of CDRs are generated. Note that change of this configuration will be applied to new calls and/or to new PDP contexts only.
By default, generation of the S-CDR, M-CDR, SMS-MT-CDR, and SMS MO-CDR types is enabled.
Example
The following command configures the system to generate only M-CDRs for accounting in the current GPRS service:
accounting cdr-types mcdr
 
associate-service
Identifies services to be associated with the GPRS Service.
 
Important: This command can be used before the associated service instance is created and configured but care should be used to match the service names.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
[ no ] associate-service { gs name | map name | sgtp name } [ context ctxt_name ]
no
Removes the service association definition from the configuration.
gs name
Specifies which Gs service configuration, by naming the Gs service instance, to associate with this GPRS service.
name must be a string of 1 to 63 alphanumeric characters with no spaces.
map name
Specifies which MAP service configuration, by naming the MAP service instance, to associate with this GPRS service.
name must be a string of 1 to 63 alphanumeric characters with no spaces.
sgtp name
Specifies which SGTP service configuration, by naming the SGTP service instance, to associate with this GPRS service.
name must be a string of 1 to 63 alpha numeric characters with no spaces.
context ctxt_name
Defines the context in which the service was created.
ctxt_name must be a string of 1 to 63 alphanumeric characters with no spaces.
Usage
Use this command to associate other services, that have been or will be configured, to this GPRS service.
Example
The following command associates Gs service gs1 with this GPRS service.
associate-service gs gs1 context sgsn2
 
cc profile
Configures the charging characteristic (CC) profile index properties.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
[ no ] cc profile index { buckets number | interval time | tariff time1 mins hours [ time2 mins hours [ time3 mins hours [ time4 mins hours ] ] ] | volume { downlink octets uplink octets | total octets } }
default cc profile index
no
Removes the a specific charging characteristics configuration definition.
default
Resets the charging characteristics to system defaults.
index
Configures a profile index for the parameter to be specified. index can be configured to any integer value from 0 to 15.
Important: 3GPP standards suggest that profile index values of 1, 2, 4, and 8 be used for hot billing, flat rate billing, prepaid billing and normal billing, respectively. A single charging characteristics profile can contain multiple behavior settings.
buckets number
Default: 4
Specifies the number of statistics container changes due to QoS changes or tariff time that can occur before an accounting record should be closed.
number can be configured to any integer value from 1 through 4.
interval time
time is measured in seconds and can be configured to any integer value from 60 to 40,000,000.
tariff time1 mins hours time2 mins hours time3 mins hours time4 mins hours
Specifies time-of-day time values to close the current statistics container (but not necessarily the accounting record). Six different tariff times may be specified. If less than six times are required, the same time can be specified multiple times.
Important: The system assumes that the billing system uses the day/date to determine if the statistics container represents an actual tariff period.
For each of the different tariff times, the following parameters must be configured:
•
mins: The minutes of the hour, an integer value from 0 to 59.
•
hours: The hour of the day, an integer value from 0 to 23.
volume { downlink vol_down_octets uplink vol_up_octets | total total_octets }
Specifies the downlink, uplink, and total volumes that must be met before closing a CDR.
vol_down_octets : Measured in octets; can be configured to any integer value from 100,000 to 4,000,000,000.
vol_up_octets : Measured in octets; can be configured to any integer value from 100,000 to 4,000,000,000.
total_octets : The total traffic volume (up and downlink) measured in octets; can be configured to any integer value from 100,000 to 4,000,000,000.
Usage
Charging characteristics consist of a profile index and behavior settings. This command configures profile indexes for the SGSN’s charging characteristics. The SGSN supports up to 16 profile indexes.
This command works in conjunction with the cc-sgsn command located in the APN configuration mode that dictates which CCs should be used for subscriber PDP contexts.
Example
The following command configures a profile index of 10 for tariff times of 7:00 AM and 7:30 PM:
cc profile 10 tariff time1 0 7 time2 30 19
 
check-imei-timeout-action
This command configures the action to be taken on the Gf interface if a Check-IMEI fails due to a timeout.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
check-imei-timeout-action [ continue | reject ]
default check-imei-timeout-action
default
Rejects the Attach or ISRAU procedure if a Check-IMEI timeout occurs.
continue
Instructs the SGSN to continue the Attach or ISRAU procedure if a Check-IMEI timeout occurs because the EIR is not reachable. This functionality matches standard call flow.
reject
Instructs the SGSN to reject the Attach or ISRAU procedure if a Check-IMEI timeout occurs.
Usage
Use this command to control the SGSN reaction if a Check-IMEI fails due to a timeout.
The continue option allows the SGSN to go forward with the MS Attach if the first Check-IMEI fails to reach the EIR due to a timeout. Any subsequent activity (such as a RAU or Service Request would force another Check-IMEI towards the EIR. If this subsequent MAP Check-IMEI should fail, then the same policy of continuing the procedure would apply.
Example
Use the following command to reject Attach Requests if the Check-IMEI timer runsout:
check-imei-timeout-action reject
 
ciphering-algorithm
This command configures the priority, ordering, for the use of the GPRS encryption ciphering algorithms.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
ciphering-algorithm priority priority algorithm
default ciphering-algorithm priority priority
default
Returns the system ciphering-algorithm priority to the default of GEA0 - which means that no ciphering will be done.
priority
Defines the priority or order of use for the ciphering algorithm.
priority must be an integer from 1 to 8.
algorithm
Identifies the algorithm to be matched to the priority. Options include:
•
gea0 - No ciphering
•
gea1 - GPRS Encryption Algorithm - GEA1
•
gea2 - GPRS Encryption Algorithm - GEA2
•
gea3 - GPRS Encryption Algorithm - GEA3
•
gea4 - GPRS Encryption Algorithm - GEA4 (not yet supported)
•
gea5 - GPRS Encryption Algorithm - GEA5 (not yet supported)
•
gea6 - GPRS Encryption Algorithm - GEA6 (not yet supported)
•
gea7 - GPRS Encryption Algorithm - GEA7 (not yet supported)
Usage
Use this command to specify the order (priority) of usage for the GPRS encryption algorithms. All of the GPRS encapsulation algorithms use a 64-bit key derived from a common mechanism: the mobile receives a random challenge, then the SIM calculates an authentication signature and an encryption key.
Example
The following command sets no ciphering to be used after two encryption algorithms have been used:
ciphering-algorithm priority 3 gea0
 
dns israu-mcc-mnc-encoding
Configures either decimal or hexadecimal format for the MCC and MNC values in the DNS query.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
dns israu-mcc-mnc-encoding { decimal | hexidecimal }
default dns israu-mcc-mnc-encoding
default
Resets the SGSN to send the MCC and MNC values in decimal format for DNS queries.
decimal
Default.
Instructs the SGSN to send the MCC and MNC in decimal format in the DNS query.
hexadecimal
Instructs the SGSN to send the MCC and MNC in hexadecimal format in the DNS query.
Usage
Use this command to determine the type of encoding for the MCC and MNC to be included in the DNS query. For example:
In decimal, the MNC/MCC in a DNS query would appear like:
rac0017.lac42e3.mnc310.mcc722.gprs
In hexadecimal, the MNC/MCC in a DNS query would appear like:
rac0017.lac42e3.mnc0136.mcc02d2.gprs
Example
Use hexadecimal values for the MCC/MNC in the DNS query.
dns israu-mcc-mnc-encoding hexadecimal
 
end
Exits the current configuration mode and returns to the Exec mode.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
end
Usage
Return to the Exec mode.
 
exit
Exits the current configuration mode and returns to the previous configuration mode.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
exit
Usage
Return to the context configuration mode.
 
gmm
This command defines the GPRS mobility management parameters for the SGSN service.
 
Important: The gmm command can be repeated to set each timer as needed.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
gmm { accept-procedure [ new-tlli | old-tlli ] mobile-reachable-timeout mins | negotiate-t3314-timeout secs | purge-timeout mins | T3302-timeout mins | T3312-timeout mins | T3313-timeout secs | T3350-timeout secs | T3360-timeout secs | T3370-timeout secs | trau-timeoutsecs }
default gmm { mobile-reachable-timeout | negotiate-t3314-timeout | purge-timeout | T3302-timeout | T3312-timeout | T3313-timeout | T3350-timeout | T3360-timeout | T3370-timeout | trau-timeout }
no gmm negotiate-t3314-timeout
default
Resets the specified timer timeout to the system default.
no
Removes the specified GMM definition from the configuration.
accept-procedure [ new-tlli | old-tlli ]
Default: new-tlli
This keyword enables the use of either a new TLLI (temporary logical link identifier) or an old TLLI for attach-accept or RAU-accept messages sent by the SGSN to the MS during related procedures.
mobile-reachable-timeout mins
Default: 58 minutes
Timer value for the mobile reachability timer.
mins must be an integer from 4 to 1440.
negotiate-T3314-timeout secs
Set the number of seconds for the T3314-timeout ready timer value.
secs must be an integer from 0 to 11160. Default is 44 seconds.
•
If the MS does not send the ready timer in the Attach/RAU request, then the SGSN sends this T3314-timeout (ready timer) value.
•
If the MS sends the requested value of the ready timer in the Attach/RAU Request, and if the requested value is less than or equal to the value of the negotiate-T3314-timeout timer, then the SGSN sends Att/RAU Accept with the requested T3314 value.
•
If the MS sends the requested value of the ready timer in the Attach/RAU Request, and if the requested value is greater than the value of the negotiate-T3314-timeout timer, then the SGSN sends Att/RAU Accept with the negotiate-T3314-timeout value.
Important: This is the only GMM timer that can be disabled by entering no at the beginning of the command syntax. no gmm negotiate-t3314-timeout By disabling negotiation of the T3314-timeout value, if the MS sends the requested value of the ready timer in the Att/RAU Request, then the SGSN sends the T3314-timeout value in the Att/RAU Accept.
purge-timeout mins
Default: 10080 minutes
Value defines the mm-context lifetime in minutes.
mins must be an integer from 1 to 20160.
T3302-timeout mins
Default: 12 minutes
Defines the number of minutes for timer to send to MS.
mins is an integer from 1 to 186.
T3312-timeout min
Default: 54 minutes
Periodic RAU update timer to send to MS.
mins is an integer from 0 to 186.
T3313-timeout secs
Default: 5 seconds
Initial page timeout timer for retransmission for Paging Requests.
secs is an integer from 1 to 186.
T3314-timeout secs
Default: 44 seconds
Ready Timer for controlling Cell Update Procedure.
secs must be an integer from 0 to 500.
T3350-timeout secs
Default :6 seconds
Retransmission timer for Attach Accept/RAU Accept/Ptmsi Realloc Command.
secs must be an integer from 0 to 20.
T3360-timeoutsecs
Default :6 seconds
Retransmission timer for Authentication Request.
secs must be an integer from 0 to 20.
T3370-timeout secs
Default :6 seconds
Retransmission timer for Identity Request.
secs must be an integer from 0 to 20.
trau-timeout secs
This timer is available in releases 9.0 and higher.
Default: 30
Specifies the number of seconds the “old” 3G SGSN waits to purge the MS’s data. This timer is started by the “old” SGSN after completion of the inter-SGSN RAU.
secs : Must be an integer from 5 to 60.
Usage
Use this command to set GMM timers.
Example
Set the t3370 timer expiration for 15 seconds.
gmm t3370-timeout 15
 
llc
Configures the timers that control the data flow for the logical link control (LLC) sub-layer.
 
Important: This command may be repeated as often as necessary to define the needed timers.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
llc { iov-ui-in-xid-reset | n201u-max { sapi11 pkt-size | sapi3 pkt-size | sapi5 pkt-size | sapi9 pkt-size } | pdu-lifetime secs | t200 sapi1 time | t200 sapi11 time | t200 sapi3 time | t200 sapi5 time | t200 sapi7 time | t200 sapi9 time | uplink-pdu-len-validation }
default { iov-ui-in-xid-reset | n201u-max { sapi11 | sapi3 | sapi5 | sapi9 } | pdu-lifetime | T200 sapi1 | T200 sapi11 | T200 sapi3 | T200 sapi5 | T200 sapi7 | T200 sapi9 | uplink-pdu-len-validation }
no llc uplink-pdu-len-validation
default
Resets the configuration to the default values.
no
Disables the uplink-pdu-len-validation .
iov-ui-in-xid-reset
Available in 8.0 releases only.
This keyword makes it possible for the operator to configure whether or not to send IOV-UI in an XID-RESET. This is useful when the MS is not setup to accept IOV-UI (for example, MS sends Attach/RAU Requests with cksn=7) and including IOV-UI in the XID-Reset would result in Attach/RAU failure.
Default: Enabled
n201u-max sapin pkt_size
This keyword sets the maximum number of octets, per service access point identifier (SAPI), for the downlink data packets. This is the upper limit that the SGSN will negotiate with the subscriber for packets sent from the SGSN to the BSC.
sapin : Command must identify one of the following SAPI: sapi11, sapi3, sapi5, or sapi9.
pkt_size : Must be an integer from 140 to 1520. Default size is 1520 octets.
pdu-lifetimesecs
Defines LLC layer PDU lifetime at the BSC. .
secs must be an integer from 0 to 90.
Default: 6
T200 sapi1 time
Sets the retransmission timer (in seconds) for sapi1.
time must be an integer of 1 to 10.
Default: 5
T200 sapi11 time
Sets the retransmission timer (in seconds) for sapi11.
time must be an integer of 1 to 50.
Default: 40
T200 sapi3 time
Sets the retransmission timer (in seconds) for sapi3.
time must be an integer of 1 to 10.
Default: 5
T200 sapi5 time
Sets the retransmission timer (in seconds) for sapi5.
time must be an integer of 1 to 20.
Default: 10
T200 sapi7 time
Sets the retransmission timer (in seconds) for sapi7.
time must be an integer of 1 to 40.
Default: 20
T200 sapi9 time
Sets the retransmission timer (in seconds) for sapi9.
time must be an integer of 1 to 40.
Default: 20
uplink-pdu-len-validation
Available in releases 8.1 and higher.
This feature enables validation of the size of the uplink LLC packets. With validation enabled, the SGSN will drop any uplinked packets that are larger than the negotiated limit.
If the no form of the command is used, then this feature is disabled. The SGSN will be more flexible with uplink packet sizes. So if the SGSN and MS have a mismatch and the MS sends packets that are larger than expected, then the SGSN will not drop the packets.
Default: Enabled.
Usage
Use the command repeatedly to configure additional timers and features for the LLC sub-layer.
Example
Set the T200 retransmission timer to timeout at 12 seconds for SAPI5:
llc t200 sapi5 12
Use the following command to instruct the SGSN to ignore the N201_U packet size limits for uplink packets from an MS:
no uplink-pdu-len-validation
 
nri
This command configures the network resource identifier (NRI) to identify a specific SGSN. The NRI is stored in the P-TMSI. The SGSN uses a portion of this NRI to set the parameters for Gb flex (SGSN pooling) functionality.
Product
SGSM
Privilege
Security Administrator, Administrator
Syntax
nri length nri_length { nri-value nri_value | null-nri-value null_nri_value non-broadcast-lac lac_id rac rac_id [ nri-value value }
no nri
no
Removes the configured NRI value and location in P-TMSI for retrieval by this SGSN operator policy.
nri length nri_length
Specifies the number of bits to be used in the P-TMSI, bits 23 to 18. to define the network resource identifier (NRI). The NRI length configuration also sets the maximum size of the pool. If not configured, the NRI length will be of zero length.
nri_length : Must be an integer from 1 to 6 to identify the number of bits.
null-nri-value null_nri_value
Configures the null NRI value which must be unique across the pool areas. This keyword is used for the offloading procedure for SGSN pooling (enabled with the sgsn offloading command, see the Exec Mode chapter).
null_nri_value : 0 (zero) indicates the keyword is not to be used and 1 to 63 are used to identify the SGSN to be used for the offloading procedure for SGSN pooling. There is no default value for this parameter.
non-broadcast lac lac_id rac rac_id
Defines the non-broadcast LAC/RAC to be used in combination with the null-NRI for the offloading procedure.
lac_id defines a location area code associated with a BSS. Must be an integer between 1 and 65535.
rac_id defines the remote area code to be associated with a BSS. Must be an integer between 1 and 255.
nri-value nri_value
Specifies the MS-assigned value of the NRI to retrieve from the P-TMSI. This value must not exceed the maximum possible value specified by the NRI length. The NRI value must be unique across the pool or across all overlapping pools.
nri_value must be an integer from 1 to 63 to identify a specific SGSN in a pool. Use of 0 (zero) value is not recommended.
Multiple NRI values can be identified by providing multiple nri-values separated by a blank space for example: nri length 6 nri-value 29 43 61
Usage
Use this command to add or remove the Gb flex pool configuration for this GPRS service. The command can be repeated to specify different values for any of the keyword parameters. If more than one NRI is configured, the GPRS service will round-robin between the available NRIs when new subscribers (re)connect.
Use this command to retrieve the NRI (identity of an SGSN) stored in in bits 23 to 18 of the packet-temporary mobile subscriber identity (P-TMSI). If more than one NRI value is configured, the GPRS service will round-robin between the available NRIs when new subscribers (re)connect.
Example
The following command specifies the the NRI length as 5 bits, identifies SGSN 23 with LAC 222 and RAC 12 for offloading procedure with NRIs 6 and 41:
nri length 5 null-nri-value 34 non-broadcast lac 222 rac 12 nri-value 6 41
 
paging-policy
Configures the paging parameters for the GPRS service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
paging-policy { last-known-area { all | bsc | cell | location-area | routing-area } + | max-retransmissionsretran_num}
no paging-policy last-known-area { bsc | cell | location-area | routing-area }
default paging-policy { last-known-area | max-retransmissions }
no
Disables the paging-policy definition for this GPRS service configuration.
default
Resets the defaults for parameters managed by this paging policy.
last-known-area
Select one or more paging areas and enter them in preferred paging order:
•
all : Pages in the last known BSC.
•
bsc : Pages in last known BSC.
•
cell : Pages in last known cell.
•
location area : Pages in last known location area.
•
routing area : Pages in last known routing area.
By default, paging occurs in the following order:
cell, BSC, routing area, location area.
max-retransmission retran_num
Configures the maximum number of retries for a page request per paging area.
retran_num: Enter an integer from 0 to 5.
•
2 : default.
•
0 : disables retransmission for paging request so that the SGSN only sends a single 2G PS-paging request to the BSC with no retransmissions.
+
Keywords can be repeated or combined as needed to complete the paging policy configuration.
Usage
Use this command to configure the order of preference for retransmitting into specified paging-areas.
Example
Use the following command to instruct the SGSN to page the cell and BSC as the last-known areas :
paging-policy last-known-area cell bsc
 
peer-nsei
This command associates a peer (remote) network service entity (NSEI) for a BSS with this GPRS service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
peer-nsei nse_id { lac lac_id rac rac_id | pooled }
[ no ] peer-nsei nse_id { lac lac_id rac rac_id | pooled }
no
Removes the NSEI LAC/RAC or pooling configuration from this BSS peer configuration.
nse_id
Defines the NSEI for this GPRS service.
nse_id must be an integer from 0 to 65535.
lac lac_id
Defines a location area code associated with the NSE BSS.
lac_id must be an integer between 1 and 65535.
rac rac_id
Defines the remote area code to be associated with the NSE BSS
rac_id must be an integer between 1 and 255.
pooled
Enables pooling with non-pooled BSCs within the pool area.
Usage
Use this command repeatedly to associate one or more LAC/RAC combinations and/or pooling with this peer-GPRS service configuration.
The Network Service Entity (NSE) at the BSS and the SGSN provides the network management functionality required for the operation of the Gb interface. Each NSE is identified by means of NSE identifier (NSEI).
Example
The following command configures the NSE with identifier as 4114 having location area code 234 and routing area code as 22:
peer-nsei 4114 lac 234 rac 22
The following command enables Gb flex (pooling) functionality for this GPRS service:
peer-nsei 4114 pooled
 
plmn
This command identifies the Public Land Mobile Network (PLMN) for the GPRS service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
plmn id mcc mcc_num mnc mnc_num
no plmn id
no
Removes the PLMN information from the configuration for the current SGSN service.
mcc mcc_num
Define the mobile country code (MCC) portion of the PLMN Id.
mnc_num must be a 3 digit integer from 100 to 999.
mnc mnc_num
Define the mobile network code (MNC) portion of the PLMN Id.
mnc_num must be a 2 or 3 digit integer from 00 to 999.
Usage
Use this command to set PLMN parameters for the current SGSN service.
Example
The following command identifies the PLMN MCC as 200 and the MNC as 10:
plmn id mcc 200 mnc 10
 
setup-timout
This command configures the maximum number of seconds allowed for session setup.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
setup-timout seconds
default setup-timout
default
Returns the configuration to the default, 60 seconds.
seconds
An integer from 1 to 1000000.
Usage
Use this command to set the time allowed for session setup.
Example
The following command sets the maximum session setup time to 300 seconds:
setup-timout 300
 
sgsn-context-request
This command specifies whether or not the PTMSI signature check should be skipped if the PTMSI signature is not included in the SGSN context request.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sgsn-context-request ptmsi-signature-absence allowed
no sgsn-context-request ptmsi-signature-absence allowed
default sgsn-context-request ptmsi-signature-absence
no
Removes this definition from the system configuration.
default
Returns the configuration to the default action to perform the PTMSI signature check.
Usage
Use this command to skip the PTMSI signature check.
Example
The following command instructs the system to perform the PTMSI signature check.
default sgsn-context-request ptmsi-signature-absence
 
sgsn-number
Define the SGSN E.164 number to be used when interacting via MAP protocol for this GPRS service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sgsn-number sgsn_number
no sgsn-number
no
Disables the use of this definition in the system configuration.
sgsn-number
Enter a string of 1 to 16 digits to identify the SGSN’s E.164 identification.
Usage
Use this command to identify the ISDN number for the SGSN associated with this GPRS service.
Example
Disable the E.164 number for this GPRS service.
no sgsn-number
 
sm
This command configures the session management (SM) parameters associated with this particular GPRS service context.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sm { activate-max-retransmissions num_retries | deactivate- max-retransmissions num_retries | ignore-pco-decode-error | modify-max-retransmissions num_retries | partial-apn-match | requested-apn-from-first-subrec | t3385-timeout secs | t3386-timeout secs | t3395-timeout secs | trim-trailing-spaces-in-apn }
default sm { activate-max-retransmissions | deactivate-max-retransmissions | ignore-pco-decode-error | modify-max-retransmissions | t3385-timeout | t3386-timeout | t3395-timeout | trim-trailing-spaces-in-apn }
default
Resets the SM parameters to the defaults.
activate-max-retransmissions num_retries
Defines the maximum number of retries to transmit ‘activate PDP context request’.
num_retries : Must be an integer from 1 to 10.
Default: 4
deactivate-max-retransmissions num_retries
Defines the maximum number of retries to transmit ‘deactivate PDP context request’.
num_retries : Must be an integer from 1 to 10.
Default: 4
ignore-pco-decode-error
Enables the SGSN to ignore received decode errors that are due to incorrectly encoded PCO IE length in SM Requests.
Default: disabled
modify-max-retransmissions num_retries
Defines the maximum number of retries to transmit ‘modify PDP context request’.
num_retries: integer from 1 to 10.
Default: 4
partial-apn-match
Enables partial matching of requested APN during APN selection.
Partial APN or APN with trailing spaces may be present in an Activate Request because incorrect information was keyed in by the user. Though it is valid to reject such Activation Requests, it increases the signaling between the MS and the SGSN. This has an impact on the radio resources.
requested-apn-from-first-subrec
Enables use of a ‘requested APN’ from the first subscription record. When this feature is enabled, the PDP Activation is not rejected during APN Selection; instead, the APN from the first subscription record is used as the requested APN and the SGSN continues with the rest of the APN Selection process.
A requested APN is an optional IE in an Activate PDP Request. To get the requested PDP type, if multiple PDP subscription records exist for the subscriber, then the MS has to include the APN information to choose the PDP subscription record during APN selection. Otherwise, such activations will be rejected during APN selection (per TS 23.060 Appendix A). Though it is valid to reject such activation requests, it increases the signaling between the MS and the SGSN, which impacts the radio resources.
t3385-timeoutsecs
Defines the maximum amount of time for retransmission of ‘activate request’ messages.
secs : Must be an integer from 1 to 60.
Default: 8
t3386-timeout secs
Defines the maximum amount of time for retransmission of ‘modify request’ messages.
secs : Must be an integer from 1 to 60.
Default is 8 seconds.
t3395-timeout secs
Defines the maximum amount of time for retransmission of ‘deactivate request’ messages.
secs : Must be an integer from 1 to 60.
Default: 8
trim-trailing-spaces-in-apn
Enables SGSN to strip off any trailing space(s) in requested APN.
If a requested APN in an Activate PDP Context Request has any trailing spaces, then those trailing spaces will be removed and the length field will be updated.
Usage
Repeat this command with different keywords (parameters) to configure the SM (session management) as needed for this GPRS service. Keywords can be used to optimize signaling between the MS and the SGSN to reduce the impact on the radio resources.
Example
Reset the number of retransmission messages for deactivate PDP context request to 5.
sm deactivate-max-retransmissions 5
 
sndcp
Define the SNDCP reassembly-timeout interval associated with this GPRS service.
Product
SGSN
Privilege
Security Administrator, Administrator
Syntax
sndcp reassembly-timeout time
default sndcp reassembly-timeout
default
Resets the timer configuration to the default value.
time
Defines the interval.
time: Must be an integer from 1 to 5. The default is 5 seconds.
Usage
Use this command to modify the SNDCP reassembly timer.
Example
Reset the default for the timer.
default sndcp reassembly-timeout
 
 
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