BSNL
Improvement of CCR
1
Improvement of CCR
BSNL
2
Improvement of CCR
BSNL
Definition of CCR :
 It is the ratio of Completed call and
processed calls by the exchange
3
Improvement of CCR
BSNL
Completed calls :
Only answered calls
or
Answered + busy + NR calls
4
Improvement of CCR
BSNL
Successful calls :
 If Only answered calls are considered
CCR will be low, where network has
nothing to do.
 If Answered + busy + NR calls are
considered as effective, CCR will be
better.
5
Improvement of CCR
BSNL
DOT / BSNL order :
 Only answered calls are to be
considered for calculation of CCR.
6
BSNL
7
Improvement of CCR
BSNL
Target set by HQ
 Junction Call = 61.64
STD call
= 56.07
8
Improvement of CCR
BSNL
 Network congestion
 Checking of Routing / Analysis
 Alternate Routing
 Signaling traffic overload
 Setting of MIN-MAX value
 CCS7 en-block signaling
Use of voice mail
9
Improvement of CCR
BSNL
 Implementation of CCBS/CCNR
 SMS alert in case of No-reply or Busy
 Announcement in case of busy subscriber
on CW
 Implementation of parallel ringing
 Proper announcement to educate the calling
party about the status of called party
 Network failure
 Rack Loading
Proper Co-ordination with TX wing
10
Improvement of CCR
BSNL
11
Improvement of CCR
BSNL
 Regular monitoring of Junction status
 Regular monitoring of Junction Occupancy
 Immediate augmentation if Occupancy >0.7
 Route Diversity
 Use of NMS
12
Improvement of CCR
BSNL
13
Improvement of CCR
BSNL
Periodic checking of exchange database
Checking with respect to Routing
Checking with respect to Charging
Checking with respect to MIN-MAX
Implementation of En-block Signaling in local network
Checking of proper over-flow of traffic
Checking of no-Loop in the network
Avoid unnecessary transit of Calls
14
Improvement of CCR
BSNL
15
Improvement of CCR
BSNL
 Alternate Routing should not create any LOOP
 If traffic in alternate path is very less, 50:50 traffic
should be given for proper utilization
 ACD should have same characteristics with
respect to original ACH
 Avoid giving too many alternate Path
Use GMSC in case of PSTN to CMTS / UASO
16
Improvement of CCR
BSNL
17
Improvement of CCR
BSNL
 Normally two COCs are created against each TG
 Due to Mobile and IN signaling traffic is increasing
 COC needs to be augmented based on traffic
particularly on POIs
 Signaling traffic is further increasing due to VAS
services
 Splitting of TG in case of > 1000 CIC
18
Improvement of CCR
BSNL
19
Improvement of CCR
BSNL
Always use fixed numbering scheme
 Always try to keep MIN=MAX to reduce
unnecessary holding time i.e. use closed numbering
scheme wherever possible
 For this Create More ACH on same TG
20
BSNL
21
Improvement of CCR
BSNL
 In CCS7 IAM, full address should go
 Hence no SAM
 Reduced holding time
 CCR Improves
22
BSNL
23
Improvement of CCR
BSNL
 Use of Voice Mail will definitely help to increase CCR
in case of Busy and No-reply
 Our switches are not having in-built Voice Mail
 We can go for revenue sharing model
 Call forwarding to AMS on No-Reply condition by
default from switch
24
BSNL
25
Improvement of CCR
BSNL
 SMS can be sent to called party having mobile, if his
PSTN is NR or Busy.
 Subscriber activate call transfer to voice mail
 Voice Mail system will send SMS to a pre-defined
mobile number
 Call forwarding charge should be waived from the “B”
number
 Call forwarding on “No Reply” should be given by
default
26
BSNL
27
Improvement of CCR
BSNL
 Announcement to the caller in case of busy
subscriber.
 Caller will get announcement for 30 second
 After 30 second announcement will change and
request to caller to try after sometime.
 Increase BSNL visibility and CCR also.
28
BSNL
29
Improvement of CCR
BSNL
 Parallel ring will increase both CCR and revenue.
 Access code : 12268
 Available in EWSD technology
 Should be available in all NT exchanges
30
Improvement of CCR
BSNL
31
Improvement of CCR
BSNL
Proper announcement to be given to educate the calling
party about the status of called party to avoid
unnecessary call attempt.
32
BSNL
33
Improvement of CCR
BSNL
 In case of RLU / Main exchange failure proper
announcement to be given to avoid unnecessary call
attempt at the originating end on the specified level.
 Artificial traffic in the network will affect CCR
34
BSNL
35
Improvement of CCR
BSNL
 Very high call attempt
 Termination is only on single DEL
 Very high rejection
 CSN rack problem
 Very Very poor CCR
 Always give lines on PRI
36
BSNL
37
Improvement of CCR
BSNL
 CSN wise traffic to be checked
 Based on traffic, re-arrangement to be done
 Particularly call center numbers to be monitored
38
BSNL
39
Improvement of CCR
BSNL
 Call centers are taking connectivity on PRI
 Very high traffic on said PRI
 Preferable to give connection from SMT instead TAN3G
 Traffic monitoring on all call Centers is a must
40
BSNL
41
BSNL
Inter-connect Traffic :
 POIs having connectivity with CMTS is carrying
roaming traffic
 High increase in Roaming traffic
 High increase in SMS traffic
 PUPE overloading
42
BSNL
SOLUTION :
 Increase more COC with Private CMTS
 Re-distribution of PUPE
43
BSNL
44