[c-nsp] dial-peer related question

[Tseveendorj Ochirlantuu]

Hi guys

I have 5350 gateway and gateway connected to internet via gigenthernet,
connected to ISDN by 2 E1 ports via PRI.

Dial peer looks like this :

dial-peer voice 4002 voip
  voice-class codec 1
 session target ipv4:61.250.94.66
 incoming called-number 0301T
 dtmf-relay rtp-nte h245-signal h245-alphanumeric
 fax-relay ecm disable
 fax rate 9600
 fax protocol t38 ls-redundancy 2 hs-redundancy 2 fallback none
!
dial-peer voice 4003 pots
 destination-pattern 0301T
 progress_ind alert enable 8
 direct-inward-dial
 port 2/0:D
!
dial-peer voice 4006 pots
 destination-pattern 0301T
 progress_ind alert enable 8
 direct-inward-dial
 port 2/3:D
!

The call coming from dial-peer 4002 and outgoing to 4003, 4006.

30 calls came from 4002 to 4003 and 4006 it can handle when 31th call came
it couldn't.
I think 2E1 card can handle 60 calls. but it didn't.  I think problem in
configuration.

How to solve it?

Thanks for any help

Sincerely,
Tseveen.