Monday 22 July 2013

under ground communication link


                         The Telephone cables.

It was 1984; I was working as a junior engineer at the telephone exchange Raichur. I was trained in switching [strowger] technology and therefore they put me for an indoor job.
The exchange equipment was built on electromagnetic principles. Mechanical switches were used to switch a call as per the calling party dialing signals.
  To maintain the switches in working order, technicians were employed on a routine basis throughout the day and night. A senior man known as Mr. Kasikar was the manager of the indoor system. As I was a new fellow, they employed me to update the connection records of working customers. This was needed to settle the billing disputes of customers.
I did prepare such records with the help of office assistants/ operators staff. As a young fellow, I was getting bored as my work was confined to indoor table work. I intended to work outdoors as a field officer, and I expressed my desire to my boss SDOP Raichur Shri D S Ugarkar. Thus I was posted as JTO Cables and Outdoor.

            The struggle:
The external plant constitutes underground cables and overhead open wires as part of the telephone system. This was subjected to frequent interruptions due to breakdowns or contact [loop] faults. Attending to interruptions was the main work involved. Open wire faults could be easily located and attended to, by a sectional lineman. But when cable fault occurs, it was hell to localize the faulty portion.
            For this, there used to be a team of people like a cable jointer, two laborers [mazdoors], and the section lineman and JTO Cable has to manage the show, and attend to the interruption as quickly as possible in order to keep customers happy.

 The process [on cable faults]:
  1. list out the interrupted telephone numbers, identify the location of the DP[distribution point],_ the end point of cable from where the connections are served, etc.
  2. Take out the route map of the cable buried in the ground; make a foot inspection to checkup if any new pits were dug on the cable route etc.
  3. Find out if there is any joint in the cable, nearby. Then ask the cable jointer to dig and localize the faulty cable section.
One Mr. Mohammad Hussein was working as a cable jointer. He had a tool kit of jointing materials, an earth megger to test for low insulation, and earth digging apparatus.
            Paper-insulated copper wire cables of 0.5 mm diameter were used to construct cable links. If such cable gets punctured the moist mud enters into the bunch of wires and almost all the conductors were grounded and the potential becomes leaky. No potential reaches to the customer's equipment and the phone is dead.

The management problem:
The worker should be well trained, he needs to be encouraged to take risks, and he should be well paid to keep his workers happy, [the manual laborers]. If the fault is localized within a couple of days, and restored by a suitable jointing process, things will be ok. If it takes more time, things will change to hot discussions and unpleasant tension prevails between the management and the customers.

Network tree of cables:
The exchange is a place, to facilitate the interconnection of telephone lines for a moment so that a phonic conversation takes place between two parties. That means there should be a permanent physical line of conductors between the exchange and the customer‘s house. And for instantaneous use at any time there should be a DC potential of 50 volts between the conductors. This type of working is called a central battery system.

            When the system is started with a few lines, say less than 20 lines, they could have been built on open-wire lines to start with. As the system grows, the numbers are classified street-wise, and underground pieces of cables are laid into the streets to a suitable centre point. These cables are joined to a main cable and linked to the exchange machine. The electromagnetic switches respond to the customer’s dialing and the connections were established and disconnected automatically.
            If however the line breaks, or a short circuit happens, or the wire is grounded, the system does not work and the line is declared as faulty. The customer can not make business by his phone.

Field trial:
            Within a week of my joining as JTO Cables, there developed a fault in the business locality and dozens of phone lines went out of order. SDOT ordered me to set right the problem. I nodded, but confusion and uneasiness developed in my mind. The previous in charge JTO was out of the station, and I did not have the cable route map nor any experience in handling such situations.
            However, we as a team went for foot patrolling and made some inquiries here and there in the middle of the main bazaar. The cable jointer and others associated with cable explained to me of the multiple cables running into the street.
            The problem is, there is not a single cable in a street; they lay cables again and again in different periods of time to meet the demand, and therefore to identify a specific cable out of many was again a problem.
            There was one senior operator who had earlier worked as a cable jointer and I knew him as I was trunk exchange in charge for some time. We made patrolling and this man gave his experience with the underground matters of the Raichur cable network. We had hope now. On a detailed enquiry, we came to know that there was a fresh digging at a point in the bazaar. We re-dug the place and found the paper insulated cable got punctured and our jointer Mr. Mohamed Husain attended to it and I was saved of embarrassment!

The industrial area was far away from the main town. Most of the industrial portion of the town was beyond five kilometers area. And it was very much in need of new connections for business activities. The SDO phones asked me, ‘Had the old cable faults have been attended it would be easy to provide new lines there.’
A working party was attached for digging and assisting the cable fault localization in the industrial area. We use to toil daily till the sun sets, digging and analyzing using the earth megger and we spent almost one week or so. We reached a place where there was no cable in a section of around ten feet. We joined this missing link to have some new lines to serve new customers.
The JTO Cables job was very challenging in the sense, when there used to be interruption the first man to be responsible was the section officer, the JTO Cables. Customers used to come with the hope of getting new connection, but when we expressed our inability to service the line due to a shortage of lines [pair of cable conductors], they use to say, ‘How is it? A neighbor of my premises is having a connection. why can not you service my line through that?’ and we have to teach him the principles of working phone lines. He will be disappointed and sometimes used to accuse, saying “These people are of no use. I think we have to speak leaders to transfer such idiots”!

They were right, in a sense, the system was primitive and advances had to emerge out of the bottleneck. I was one fellow among many officers who were accused for improper planning and delay in doing the network up-gradations in the country. It was 1985-86 year. About 35 -40 years of Indian independence. It was a big challenge to meet the growing demand for phone lines for business.
The parliament was directly involved in formulating the telecom policies and implementations were arranged on piece-meal, due to so many reasons. The huge requirement of material throughout the nation was also a reason.

The advent of microwave systems started in India around 1985-86. National trunk routes were coming up. The STD facility was emerging connecting important places, yet the local cabling was not perfected. Here also some changes started happening. Paper core cables were being replaced in phases. If this was implemented, at least the service can not go out of order 100% on interrupted cables.
But alas! The man is involved. The crocked ideas of the mind are to be eliminated. The most challenging task it was, the staff control. If someone working on the grass-root level, instead of restoring the cable failures, starts creating faults intentionally, only God has to save the situation. But it was a reality, and that was the cruel mind behind actions, that does more damage.

In that sense, machines are far better. They are 100% faithful. In fact, the efficiency of government offices was limited to 60 to 65%!  The story need not be elaborated. ‘Power corrupts and absolute power corrupts absolutely’ is the saying. The initial cable construction works were limited. There was only one cable manufacturing factory, in India it seems. Expansions of equipment were very rare. The divisional station Gulberga was a manual switching during 1974-75. It was CB manual switching, in which all activities were manual, including local call connecting by operators.
If someone gets a new connection immediately, it would be a seventh wonder. After 1985, the situation started to better communication drive. The supply chain of materials increased, and the execution of cable construction was done through contractors, yet the jointing, and localization of faults was in the hands of a few skilled workers.

The Yermarus camp was about seven kilometers away from the main exchange. A single 20-pair cable was working there, and it went out of order. For such a long distance cable, fault localization was to be done. It went into weeks to do the things to work. A VIP stationed there complained to the General Manager Hubli, about the bad situation of service to Yermarus camp. The general manager came on inspection to witness the actual problem. I was trembling to face him. But he was very polite officer and ascertained the method of fault localization. He inquired about any meters being used to localize the faults. We did not have any meters other than the earth megger. The advent of electronics touched India and solid-state fault locators were being manufactured by Aplab Company. He ordered one such unit for the Raichur system.

We received the brand new meter which works on "pulse eco reflection" method to locate the distance to the fault. One fellow, a cable jointer came on deputation to do cable work from Bidar. He was trained in using the meter. We applied his knowledge to locate a fresh fault. The meter worked very fine and just by digging about ten feet distance we could get the damaged portion of the cable. This was a turning point in increasing our efficiency in attending to the faults. We were saved!

One story goes like this. The operator was eliminated, the trunk efficiency increased, the technician was eliminated the switching efficiency increased. Now if the cable jointer is eliminated, the local line efficiency may increase. That may be the reason; all phone mechanics were made cable spillers in due course. At last, the problem creators were eliminated to some degree.
The electronic exchange era started in India [due to the initiatives of Mr.Sham Pitroda]. The pace of new connections increased. Switches were made available within a short period of time with a bulk capacity.

The Raichur office was upgraded to a Divisional office. The number of connections went up in stages. The waiting list was long. Suddenly one 300 lines electronic switch was sanctioned and now it was the responsibility of the cable section to arrange for increasing cable capacity according to the waiting list. Within a couple of weeks, the cable plans were prepared and got sanctioned by the competent authority. Now cable lying is to be done on an urgent basis to meet the set targets. The divisional office arranged for the labor force and immediately the process of digging and lying cables commenced.  It was a departmental workforce on muster roll with senior mazdoors. One S I Phones was given the responsibility of keeping the records of laborers and executing the work as required by the cable section.
The digging at main road crossings was done during night hours to avoid the traffic problem. And the cable laying was monitored on a daily basis. Thus by the financial year's end, the new connections were being put into service. And the people were happy to get the phone facility to their residences and business places. The connections crossed the 1500 DELs mark.
The Gulbarga city got one E10B switch with all modern facilities. And the earlier imported PRX switch of Gulbarga was diverted to Raichur. This exchange had a capacity of 2000 lines. The most sophisticated computer-controlled system is to be installed in the next year immediately. The cable planning was done for suitable upgradation. The existing Strowger switching system which was working on an electromagnetic relay system is to be eliminated by installing the modern PRX switch. Here again, a technical skill of making parallel wiring of old and new switches was to be implemented to transfer the existing customers to the new system. Cable-to-cable, pair to pair T- wiring was done with the help of multiple cable jointers. One additional SDE was posted to coordinate the functions. The GM Hubli personally guided the method to be adopted to make T- jointing. This all made me a perfect man of cables.

We transferred the old cable network to the new PRX switch successfully. But on the very first day, we could not trace about 200 connections. Again our Divisional Engineer was pointing to me for the inefficient transfer process. I patiently listed the reported numbers and went on ringing them one by one. 25% of the problem was solved. All the joints were kept open to stabilize the system. We could not trace about 25 connections in a particular area. We re-examined the T- jointing of that cable and there was a punching problem of some conductors. Again there was a distribution cable fault in the Gunj locality. All the things got settled in a couple of days.

The system was growing rapidly. One officer was promoted from Gulbarga and was posted to Raichur and he was a cable system specialist. He came to lead the Raichur cable system. I was very happy. We shared our knowledge and experience and worked together for the next one year. Now our job was to construct, the pillar system. A pillar is a point of isolation on a cable route. All cables going in that direction were terminated on the pillar and loop connections were done to patch the two sides, the exchange side and the distribution side. This facilitates to carry out testing in case of faults and providing new connections. The underground portion was at last modernized and records were updated. The information on spare availability could be assessed accurately.  

                                                                                    

  
 Date of birth: 03-08-1951.
Education:   B Sc Maths and Physics.
Employment:
         1974- Telephone operator.
            1980- Telephone inspector.
            1084- Junior Engineer.
            1999- Sub Divisional Engineer.
Retired from service on 01-02-2009.


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