Dials a Number and
presses send button
SDP
IAM
GSM MO Prepaid Call Flow
MSC/VLR MSC/VLR
SRI Ack
Request PRN
PRN Ack
SCP
ANM
Request IDP Send BCSM and Con/Conn
Scriber’s Data InquirySDP checks subscriber’s
balance for this call
Calling Number
Called Number
Paging
Allow For Call
BSS
Paging Message
Paging Ack
Response Message
SRI
I want to use GPRS
Forwards CAMEL Profile
CCN
SDPSDP checks subscriber’s
balance and reserves per unit Cost in advance defined against
content IDs
Per unit cost reserved- activate PDP Context
SGSN requests GGSN to activate PDP context
Gr
Gn Gi
Cache Server
Gb
WARID APN Call Flow
Returns CAMEL Profile
IDNS resolves query and givesIP of the destination GGSN
SGSN queries IDNS about destination GGSN
Um
BSS
169.254.2.54
Activates PDP context and assigns an
IP address
Warid APN Traffic
Forwards to Cache Server
Router
Requests HLR Profile
GGSN
Firewall
SASN passescontent IDs
Forwards these content IDs
I want to use GPRS
Forwards CAMEL Profile
CCN
SDPSDP checks subscriber’s
balance and reserves per unit Cost in advance
Per unit cost reserved- activate PDP Context
SGSN requests GGSN to activate PDP context
Gr
Gn GiGb
Returns CAMEL Profile
IDNS resolves query and givesIP of the destination GGSN
SGSN queries IDNS about destination GGSN
Um
BSS
169.254.2.54
Activates PDP context and assigns an
IP address
Router
Requests HLR Profile
GGSN
Firewall
MIEPWAP. Warid Call Flow
ForwardsData
WAP. WaridTraffic
SASN passescontent IDs
Forwards these content IDs
I want to
send MMS
Forwards CAMEL Profile
CCN
SDPSDP checks subscriber’s
balance and reserves per unit Cost in advance
Per unit cost reserved- activate PDP Context
SGSN requests GGSN to activate PDP context
Gr
Gn GiGb
Returns CAMEL Profile
IDNS resolves query and givesIP of the destination GGSN
SGSN queries IDNS about destination GGSN
Um
BSS
169.254.2.54
Activates PDP context and assigns an
IP address
Router
Requests HLR Profile
GGSN
Firewall
MMSC
MTAMIEPMMS Call Flow
ForwardsData
MMSTraffic
Forwards these content IDs
SASN passescontent IDs
