Call Forwarding Fails

Publication Date:  2015-07-25 Views:  304 Downloads:  0
Issue Description
The customer wants to bind a fixed-line phone to a mobile phone so that a call that fails be answered on the fixed-line phone can be forwarded to the mobile phone.

The customer enables the call forwarding function and sets the number of mobile phone B (9008615513616) as the forwarded-to number. When a user makes a call to phone A, the call fails to be forwarded to mobile phone B.

Handling Process
Step 1 Make a call directly to mobile phone B on phone A. The call is connected successfully. Phone A has call rights.

Step 2 Make a call to phone A on intra-office extension phone C.

If phone A does not answer the call, the call is forwarded to mobile phone B successfully.

This indicates that the call forwarding function is properly configured and takes effect on phone A.

Based on the preceding analysis, it can be confirmed that the fault occurs only when outer-office users make calls to phone A.

Considering anti-fraud right control, the fault is related to trunk call rights.

Step 3 View the trunk call rights.


[%eSpace U1910(config)]#show trunkgroup 
TKCGroup Info 
GroupNo Office Protocol Direction   Restrict BasicOutgoing WithCUS CLIIndex DomainType 
------- ------ -------- ----------- -------- ------------- ------- -------- ---------- 
6096    254    AT0      BiDirection NO       ---           NO      ---      COMMON 
6098    254    PRA     BiDirection NO       ---           NO      ---      COMMON 
26      1      PRA      BiDirection YES      INTER/LOCAL   NO      ---     COMMON 
6074    253    PRA      BiDirection YES      INTER/LOCAL   NO    ---   COMMON 
TrunkLevel 
---------- 
Default


Trunk 254 does not have the outgoing call right. In other words, incoming calls made through trunk 254 cannot be forwarded to outer-office users.

Step 4 Modify the trunk call rights and test again.

[%eSpace U1910(config)]#config modify trunkgroup no 6098  restrict yes outgoingright inter&local&ddd 
[%eSpace U1910(config)]#show trunkgroup 
GroupNo Office Protocol Direction   Restrict BasicOutgoing   WithCUS CLIIndex DomainType 
------- ------ -------- ----------- -------- --------------- ------- -------- ---------- 
6096    254    AT0    BiDirection YES      NO      NO      ---      COMMON 
6098    254    PRA    BiDirection YES     INTER/LOCAL/DDD NO      ---      COMMON 
26      1      PRA      BiDirection YES      INTER/LOCAL     NO      ---   COMMON 
6074    253    PRA      BiDirection YES      INTER/LOCAL    NO   ---    COMMON 
TrunkLevel 
---------- 
====  Command executed success !  ====


When an outer-office user D makes a call to phone A and phone A does not answer the call, the call is forwarded to mobile phone B successfully. The fault is rectified.

----End
Root Cause
1.  Phone A does not have call rights.

2.  The call forwarding function is not properly configured. For example, the mobile number format is incorrect.

3.  Trunk call rights are restricted.

Suggestions
In this case, call forwarding fails because trunk call rights are restricted.

Since the outgoing call right granted to the trunk conflicts with the anti-fraud policy, ask the customer to decide whether to stop right control to implement the call forwarding function.

END