Accept Collect Calls E1 R2 with country Brazil use-defaults

[Guilherme Lonardoni]

All,

I set up a controller E1 with country brazil use-defaults. When I receive a collect call from PSTN, this call has category II-8 and the cisco voice gateway returns B-7, disconnecting the call. I find this feature "E1 R2 Collect Call Blocking".

I need accept collect calls from PSTN with category II-8 and can´t find a way to disable this feature !!!

New Features

E1 R2 Collect Call Blocking Feature

The  E1 R2 Call Blocking feature provides two ways to block incoming collect  calls-category-based and double answer. With category-based call  blocking, collect calls will be blocked based on a specific category.  For example, in Brazil, collect calls arrive with a category II-8, for  which the Cisco access router will send B-7 as a response instead of an  answer signal. This approach is only applicable when switches in the  central office support category-based blocking.

###########################################################################

Router:3825

IOS:c3825-advipservicesk9-mz.124-24.T4.bin

Controller config:

controller E1 0/0/0

framing NO-CRC4

line-termination 75-ohm

ds0-group 0 timeslots 1-15,17-31 type r2-digital r2-compelled ani

cas-custom 0

  country brazil use-defaults

  metering

  category 2

  answer-signal group-b 1

  trunk-group PSTN timeslots 1-15,17-31 preference 1 description EMBRATEL CIRCUITO (1)

############################################################################

Does anyone have any tips that can help me?

Thanks and Regards.

Guilherme Lonardoni

[Leonardo Santana]

try to disable the double answer:

Router(config)# controller e1 4/0

Router(config-controller)# cas-custom 1

Router(config-controller)# no double-answer

Regards!

Leonardo Santana

[paolo bevilacqua]

Double-answer is disabled by default.

May be OP can try enabling it, to possibly prevent the router to reject the call with category-based signal.

[Guilherme Lonardoni]

Thanks, but double-answer is not configured.

Disconnection occurs based on category.

I solved problem with command collect-call-enable under cas-custom.

Thanks all.

[paolo bevilacqua · Accepted solution]

That is a completely undocumented command, in perfect Cisco style.

Thanks for letting us know!

[andrei.goncalves]

Hi Guilherme !

I have another situation with Collect Calls.. I need to allow the incomming collect calls, but, the calls are comming from PSTN to a Philips PBX first... than, to a cisco gateway.. it would be like this:

PSTN > PBX > E1 ISDN QSIG > C2951 > CUCM7.x > IP Phone.

When I pickup the call, I start hearing the music.. but the call is droppend in a second....

any idea ?

Thank you !

Andrei.