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IP Phone 3905 sip dial KPML with CUCM 12.5

Hi,

 

We have CUCM 12.5 and 3905 IP Phones

We faced a problem while implementation third party call recording system with the CUCM for some DNs

The call recording depends on span monitor to capture traffic

 

The problem is that when the 3905 phone initiate a call

The "To SIP" address field showed in Wire-Shark is not displaying all the dialed digits. Only it displays the first digit as shown below:

In case of Internal Call: [The dialed number is 3453]

From: sip:3164@172.16.X.X
To: sip:3@172.16.X.X

 

In case of external Call to SIP Trunk to gateway : [The dialed number is 9234538374]

To: sip:9@172.16.X.X

 

CUCM traces shows the same symptom in the SIP TO  field

It seams this phone 3905 isn't sending digit by digit to CUCM

 

I solved this by configuring sip dial-rules

But it cause high delay when dialing from these phones

 

Is there any other way to solve this problem without sip dial rules

Or any solution to avoid the delay in dialing after applying the sip dial rules

 

The phone firmware is the latest

 

Thanks

 

2 Replies 2

usi_valle
Level 1
Level 1

I have the same problem, Do you resolv it?

It is solved by SIP dial rules as I mentioned above

You can lower the inter-digit timeout to reduce the delay

There is no other workaround for this