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3. Step by Step Installation Procedure

3. Step by Step Installation Procedure. Steps to be done at 1) Exchange 2) Subscriber Premises. At the Exchange ,. Note down the 9digit IPEI number from ALM (eg:00210023A) Create a subscriber at OMC using command “ chgsub-add ”

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3. Step by Step Installation Procedure

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  1. 3. Step by Step Installation Procedure

  2. Steps to be done at • 1) Exchange • 2) Subscriber Premises

  3. At the Exchange , • Note down the 9digit IPEI number from ALM (eg:00210023A) • Create a subscriber at OMC using command “chgsub-add” • Use service type as voice & authentication code as 11223344 for easy subscription ( for more details refer OMC PPT) • Connect ALM to CPM using ALM-CPM cable • Power up the CPM from AC mains • Keep the ALM in line of sight to CBS • Connect a telephone instrument to CPM • Set the telephone dial mode to DTMF

  4. At the Exchange Cont.., • Go off-hook & dial password # # 0055555 • After acceptance tone heard go on-hook • Go off-hook & dial # # 13, this initializes the FRS settings to factory default. After acceptance tone heard go on-hook • Go off-hook & dial password # # 0055555 • After acceptance tone heard go on-hook • Go off-hook & dial # #25***(or)the string generated by OMC • Acceptance tone is heard followed by RSSI beeps. Voice subscription is done.

  5. At the Exchange Cont.., • The dissub-lst command in OMC shows the Voice subscription status from PENDING to DONE • If subscription is not happening, Verify the message in log file subdbg.log if any IPEI mismatch • Going repeated off-hook check for the • 1) Immediate dial tone • 2) RSSI beeps ( Should be  8 beeps when CBS nearby) • 3) Operation from the battery by Switching OFF AC mains • FRS unit ready for installation • FRS unit ready for installation

  6. At the Subscriber Premises

  7. Physical Connections • Fix the ALM on 3/4” Gi pipe using ALM-Fixture • Connect ALM to CPM using ALM-CPM cable • Hold the ALM in line of sight to CBS • Connect the telephone instrument to CPM • Power ON CPM (If necessary fix CPM on Wall) • Antenna positioning • Dial DTMF code # # 41 • If LOS is clear this will deliver continuous tone without any break/disturbance • Slowly rotate ALM and look for the better position where the tone received is maximum in volume and no break/disturbance . Then FIX the pipe rigidly

  8. Received Signal Strength Indicator(RSSI) Check • Dial DTMF code # # 42 & count number of RSSI beeps • This has to be i) equal or greater than 3 beeps ii) stable, for the guaranteed voice connection • Force Locking FRS to Particular BS(Base Station) • This is necessary when the FRS antenna has the possibility of receiving signal from more than one BS, which are in different distance from FRS • Force lock the FRS to one BS where RSSI is received high

  9. Force Locking Procedure • Go off-hook Dial password # # 0055555 • After acceptance tone heard go on-hook • Go off-hook Dial # # 313BBB • Where, BBB = 3 digit CBS/RBS Id ( to be force locked) • Enter BBB as 255 for releasing the force lock • Setting the Distance code • Go Off-hook Dial password # # 0055555, Go on-hook • Go Off-hook Dial # # 3150DD • DD=00 for the distance within 1.5km • DD=01 for 1.5 to 2.5km, DD=02 for 2.5 to 3.5km • ………and so on DD=24 for the distance 24.5to 25.5 km • The code # # 305D can be used to set the distance up to 10km in the similar steps mentioned above

  10. Checking for Dial tone: - • When the correct distance code is set, immediate dial tone is heard • Check for the consistency of dial tone by going repeated off-hook • If delay in dial tone is observed then change the distance code to adjacent and check again

  11. Doing Echo Cancellation • Go Off-hook Dial # # 01 * 951 * • After the acceptance tone heard Go On-hook • Go the next Off-hook by closing the mouthpiece of the receiver • After a chirp sound is heard go On-hook • Echo cancellation done • Installation is completed go for the functionality check

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