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wareseeker.com/free-gsm-sms-call-flow
Posted by crouse
www.soft411.com/software/call-flow.html
Posted by crouse
Step 1
In the idle state the mobile monitors the paging channel to receive incoming calls. A General Page
Message on the Paging Channel notifies an incoming call.
BS->MS
PCH: General Page Message
MSG_SEQ = 1
IMSI_S = 9876543210
SERVICEJDPTION = 2
Step 2
The paged mobile sends a Page Response Message on the access channel.
BS <- MS
ACH: Page Response Message
ACK_SEQ = 1 MSG_SEQ = 2 ACK_REQ = 1 VALID_ACK = 1 ACK_TYPE = 2
MSID_TYPE = I MSI and ESN
ESN = OxDEADBEEF IMSI_S = 9876543210
AUTH_MODE = 1 (authentication fields included)
AUTHR = 0x307B5 (authentication signature)
RANDC = 0xC6 (global random number in APM)
SERVICEJDPTION = 2
PM = 0 (voice privacy not supported)
Step 3
BS -> MS
PGCH: Order Message
ACK_SEQ = 2 MSG_SEQ = 0 ACK_REQ = 0 VALID_ACK = 1
ORDER = Base Station Acknowledgement Order
Step 4
The system sets up a traffic channel for the call, and sends a Channel Assignment Message.
BS -> MS
PGCH: Channel Assignment
ACK_SEQ: 2 MSG_SEQ: 1 ACK_REQ: 0 VALID_ACK: 1
ASSIGN_MODE: Trafic Channel Assignement
GRANTED_MODE: 2
CODE_CHAN: 40
ENCRYPT_MODE: Encryption disabled for type specific fields.
BAND_CLASS: 800M cellular
CDMA_FREQ: 347
Step 5
The mobile and the base station notice each other's traffic channel signals and confirm their presence by exchanging Acknowledgment messages.
BS -> MS
RTCH: Order Message
ACK_SEQ: 0 MSG_SEQ: 0 ACK_REQ: 0
ENCRYPTION: 0
Step 6
BS <- MS
FTCH: Order Message
ACK_SEQ: 7 MSG_SEQ: 0 ACK_REQ: 1
ENCRYPTION: 0
ORDER: Base Station Acknowledgement Order
Posted by jahangir1983
Step 1
In the idle state the mobile monitors the paging channel to receive incoming calls. A General Page
Message on the Paging Channel notifies an incoming call.
BS->MS
PCH: General Page Message
MSG_SEQ = 1
IMSI_S = 9876543210
SERVICEJDPTION = 2
Step 2
The paged mobile sends a Page Response Message on the access channel.
BS <- MS
ACH: Page Response Message
ACK_SEQ = 1 MSG_SEQ = 2 ACK_REQ = 1 VALID_ACK = 1 ACK_TYPE = 2
MSID_TYPE = I MSI and ESN
ESN = OxDEADBEEF IMSI_S = 9876543210
AUTH_MODE = 1 (authentication fields included)
AUTHR = 0x307B5 (authentication signature)
RANDC = 0xC6 (global random number in APM)
SERVICEJDPTION = 2
PM = 0 (voice privacy not supported)
Step 3
BS -> MS
PGCH: Order Message
ACK_SEQ = 2 MSG_SEQ = 0 ACK_REQ = 0 VALID_ACK = 1
ORDER = Base Station Acknowledgement Order
Step 4
The system sets up a traffic channel for the call, and sends a Channel Assignment Message.
BS -> MS
PGCH: Channel Assignment
ACK_SEQ: 2 MSG_SEQ: 1 ACK_REQ: 0 VALID_ACK: 1
ASSIGN_MODE: Trafic Channel Assignement
GRANTED_MODE: 2
CODE_CHAN: 40
ENCRYPT_MODE: Encryption disabled for type specific fields.
BAND_CLASS: 800M cellular
CDMA_FREQ: 347
Step 5
The mobile and the base station notice each other's traffic channel signals and confirm their presence by exchanging Acknowledgment messages.
BS -> MS
RTCH: Order Message
ACK_SEQ: 0 MSG_SEQ: 0 ACK_REQ: 0
ENCRYPTION: 0
Step 6
BS <- MS
FTCH: Order Message
ACK_SEQ: 7 MSG_SEQ: 0 ACK_REQ: 1
ENCRYPTION: 0
ORDER: Base Station Acknowledgement Order
Posted by jahangir1983
Step 1
In the idle state the mobile monitors the paging channel to receive incoming calls. A General Page
Message on the Paging Channel notifies an incoming call.
BS->MS
PCH: General Page Message
MSG_SEQ = 1
IMSI_S = 9876543210
SERVICEJDPTION = 2
Step 2
The paged mobile sends a Page Response Message on the access channel.
BS <- MS
ACH: Page Response Message
ACK_SEQ = 1 MSG_SEQ = 2 ACK_REQ = 1 VALID_ACK = 1 ACK_TYPE = 2
MSID_TYPE = I MSI and ESN
ESN = OxDEADBEEF IMSI_S = 9876543210
AUTH_MODE = 1 (authentication fields included)
AUTHR = 0x307B5 (authentication signature)
RANDC = 0xC6 (global random number in APM)
SERVICEJDPTION = 2
PM = 0 (voice privacy not supported)
Step 3
BS -> MS
PGCH: Order Message
ACK_SEQ = 2 MSG_SEQ = 0 ACK_REQ = 0 VALID_ACK = 1
ORDER = Base Station Acknowledgement Order
Step 4
The system sets up a traffic channel for the call, and sends a Channel Assignment Message.
BS -> MS
PGCH: Channel Assignment
ACK_SEQ: 2 MSG_SEQ: 1 ACK_REQ: 0 VALID_ACK: 1
ASSIGN_MODE: Trafic Channel Assignement
GRANTED_MODE: 2
CODE_CHAN: 40
ENCRYPT_MODE: Encryption disabled for type specific fields.
BAND_CLASS: 800M cellular
CDMA_FREQ: 347
Step 5
The mobile and the base station notice each other's traffic channel signals and confirm their presence by exchanging Acknowledgment messages.
BS -> MS
RTCH: Order Message
ACK_SEQ: 0 MSG_SEQ: 0 ACK_REQ: 0
ENCRYPTION: 0
Step 6
BS <- MS
FTCH: Order Message
ACK_SEQ: 7 MSG_SEQ: 0 ACK_REQ: 1
ENCRYPTION: 0
ORDER: Base Station Acknowledgement Order
Posted by jahangir1983
Step 1
In the idle state the mobile monitors the paging channel to receive incoming calls. A General Page
Message on the Paging Channel notifies an incoming call.
BS->MS
PCH: General Page Message
MSG_SEQ = 1
IMSI_S = 9876543210
SERVICEJDPTION = 2
Step 2
The paged mobile sends a Page Response Message on the access channel.
BS <- MS
ACH: Page Response Message
ACK_SEQ = 1 MSG_SEQ = 2 ACK_REQ = 1 VALID_ACK = 1 ACK_TYPE = 2
MSID_TYPE = I MSI and ESN
ESN = OxDEADBEEF IMSI_S = 9876543210
AUTH_MODE = 1 (authentication fields included)
AUTHR = 0x307B5 (authentication signature)
RANDC = 0xC6 (global random number in APM)
SERVICEJDPTION = 2
PM = 0 (voice privacy not supported)
Step 3
BS -> MS
PGCH: Order Message
ACK_SEQ = 2 MSG_SEQ = 0 ACK_REQ = 0 VALID_ACK = 1
ORDER = Base Station Acknowledgement Order
Step 4
The system sets up a traffic channel for the call, and sends a Channel Assignment Message.
BS -> MS
PGCH: Channel Assignment
ACK_SEQ: 2 MSG_SEQ: 1 ACK_REQ: 0 VALID_ACK: 1
ASSIGN_MODE: Trafic Channel Assignement
GRANTED_MODE: 2
CODE_CHAN: 40
ENCRYPT_MODE: Encryption disabled for type specific fields.
BAND_CLASS: 800M cellular
CDMA_FREQ: 347
Step 5
The mobile and the base station notice each other's traffic channel signals and confirm their presence by exchanging Acknowledgment messages.
BS -> MS
RTCH: Order Message
ACK_SEQ: 0 MSG_SEQ: 0 ACK_REQ: 0
ENCRYPTION: 0
Step 6
BS <- MS
FTCH: Order Message
ACK_SEQ: 7 MSG_SEQ: 0 ACK_REQ: 1
ENCRYPTION: 0
ORDER: Base Station Acknowledgement Order
Posted by hameznick
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