A configuration command that modifies the timer-related call control parameters of a cell. In this command, the following parameters uniquely identify the cell:
Cell Index or Cell Name
| ID | Name | Description |
|---|---|---|
| IDXTYPE | Index Type | Meaning:Index Type Value range:BYNAME(By Name),BYIDX(By Index) Explanation:Index Type. Default value:None |
| CELLIDX | Cell Index | Meaning:Cell Index Value range:0~2047 Explanation: This parameter indicates the source cell index. The source cell index must be unique. Default value:None |
| CELLNAME | Cell Name | Meaning:Cell Name Value range:1-32 characters Explanation: This parameter indicates the name of the source cell. The name of each cell under one BSC must be unique. Default value:None |
| T200SDCCH | T200 SDCCH[5ms] | Meaning:T200 SDCCH[5ms] Value range:1~255 Explanation:This parameter specifies the expiry value of timer T200 used for the SDCCH over the Um interface. T200 prevents the data link layer from deadlock during data transmission. The data link layer transforms the physical link that is vulnerable to errors into a sequential non-error data link. The entities at the two ends of this data link use the acknowledgement retransmission mechanism. Each message must be confirmed by the peer end.In unknown cases, both ends are waiting if a message is lost. At this time, the deadlock of the system occurs.Therefore, the transmit end must establish a timer. When the timer expires, the transmit end regards that the receive end does not receive the message and then the transmit end retransmits the message.The number of retransmissions is determined by N200.T200 and the N200 ensure that the data link layer sequentially transmits data and that the transmission is free from errors. Default value:None |
| T200FACCHF | T200 FACCH/F[5ms] | Meaning:T200 FACCH/F[5ms] Value range:1~255 Explanation:This parameter specifies the expiry value of timer T200 used for the FACCH/TCHF over the Um interface. For the function of timer T200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| T200FACCHH | T200 FACCH/H[5ms] | Meaning:T200 FACCH/H[5ms] Value range:1~255 Explanation:This parameter specifies the expiry value of timer T200 used for the FACCH/TCHH over the Um interface. For the function of timer T200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| T200SACCT0 | 200 SACCH TCH SAPI0[10ms] | Meaning:200 SACCH TCH SAPI0[10ms] Value range:1~255 Explanation:This parameter specifies the expiry value of timer T200 used for the SACCH over the Um interface when the TCH supports SAPI0 services. For details of the function of timer T200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. SAPI0 maps with speech services, and SAPI3 maps with short message services. Default value:None |
| T200SACCH3 | T200 SACCH TCH SAPI3[10ms] | Meaning:T200 SACCH TCH SAPI3[10ms] Value range:1~255 Explanation:This parameter specifies the expiry value of timer T200 used for the SACCH over the Um interface when the TCH supports SAPI3 services. For details of the function of timer T200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. SAPI0 maps with speech services, and SAPI3 maps with short message services. Default value:None |
| T200SACCHS | T200 SACCH SDCCH[10ms] | Meaning:T200 SACCH SDCCH[10ms] Value range:1~255 Explanation:This parameter specifies the expiry value of timer T200 used for the SACCH on the SDCCH. For the function of timer T200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| T200SDCCH3 | T200 SDCCH SAPI3[5ms] | Meaning:T200 SDCCH SAPI3[5ms] Value range:1~255 Explanation:This parameter specifies the expiry value of timer T200 when the SDCCH supports SAPI3 services. For the function of timer T200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| N200PARASWITCH | Use LAPDm N200 | Meaning:Use LAPDm N200 Value range:NO(NO),YES(YES) Explanation:This parameter specifies whether the BSC sends the LAPDm N200 parameter to the BTS. Default value:None |
| N200ESTAB | N200 of establish | Meaning:N200 of establish Value range:5~254 Explanation:Error control is performed on the I frame sent over the LAPDm layer between the BTS and MS. If the MS detects errors in an I frame, the BTS should resend the I frame.This parameter indicates the maximum number of retransmissions of the I frame. For the function of N200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| N200REL | N200 of release | Meaning:N200 of release Value range:5~254 Explanation:Error control is performed on the I frame sent over the LAPDm layer between the BTS and MS. If the MS detects errors in an I frame, the BTS should resend the I frame.This parameter indicates the maximum retransmission times of frame I during the multi-frame release. For the function of N200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| N200SACCH | N200 of SACCH | Meaning:N200 of SACCH Value range:5~254 Explanation:Error control is performed on the I frame sent over the LAPDm layer between the BTS and MS. If the MS detects errors in an I frame, the BTS should resend the I frame.This parameter indicates the maximum retransmission times of frame I on the SACCH. For the function of N200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| N200SDCCH | N200 of SDCCH | Meaning:N200 of SDCCH Value range:23~254 Explanation:Error control is performed on the I frame sent over the LAPDm layer between the BTS and MS. If the MS detects errors in an I frame, the BTS should resend the I frame.This parameter indicates the maximum retransmission times of frame I on the SDCCH. For the function of N200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| N200FHALF | N200 of FACCH/Half rate | Meaning:N200 of FACCH/Half rate Value range:29~254 Explanation:Error control is performed on the I frame sent over the LAPDm layer between the BTS and MS. If the MS detects errors in an I frame, the BTS should resend the I frame.This parameter indicates the maximum retransmission times of frame I on the FACCH (a half-rate channel). For the function of N200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| N200FFULL | N200 of FACCH/Full rate | Meaning:N200 of FACCH/Full rate Value range:34~254 Explanation:Error control is performed on the I frame sent over the LAPDm layer between the BTS and MS. If the MS detects errors in an I frame, the BTS should resend the I frame.This parameter indicates the maximum retransmission times of frame I on the FACCH (a full-rate channel). For the function of N200 and the effect of the parameter, see the descriptions of the T200 SDCCH (5 ms) parameter. Default value:None |
| IMMASSRESENDEN | Use Imm_Ass Retransmit Parameter | Meaning:Use Imm_Ass Retransmit Parameter Value range:NO(NO),YES(YES) Explanation:This parameter specifies whether the BSC sends the immediate assignment retransmission parameter to the BTS. Default value:None |
| IMMASSMAXDELAYTIME | Max Delay of Imm_Ass Retransmit<ms> | Meaning:Max Delay of Imm_Ass Retransmit<ms> Value range:0~254 Explanation:Within the period specified by this parameter, the immediate assignment message is dispatched and retransmitted. Otherwise, the message is not dispatched or retransmitted. Default value:None |
| IMMASSMAXSENDNUM | Max Transmit Times of Imm_Ass | Meaning:Max Transmit Times of Imm_Ass Value range:1~5 Explanation:This parameter specifies the maximum number of retransmissions of the immediate assignment message. When this number is reached, the immediate assignment message is not retransmitted even if the Max Delay of Imm_Ass Retransmit (ms) is not exceeded. Default value:None |
Modify the call control timer parameters of a cell (Index Type = BYIDX(By Index); Cell Index = 0; T200 SDCCH[5ms] = 65; T200 FACCH/F[5ms] = 51; T200 FACCH/H[5ms] = 52; 200 SACCH TCH SAPI0[10ms] = 145; T200 SACCH TCH SAPI3[10ms] = 210; T200 SACCH SDCCH[10ms] = 65; T200 SDCCH SAPI3[5ms] = 65; Use LAPDm N200 = NO(NO); Use Imm_Ass Retransmit Parameter = NO(NO)): MOD CELLCCTMR: IDXTYPE=BYIDX, CELLIDX=0, T200SDCCH=65, T200FACCHF=51, T200FACCHH=52, T200SACCT0=145, T200SACCH3=210, T200SACCHS=65, T200SDCCH3=65, N200PARASWITCH=NO, IMMASSRESENDEN=NO;