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New Member

C2611, AIM-VOICE-30 and two E1-PRI

I have Cisco C2611 with VWIC-2MFT-G703 and AIM-VOICE-30.

IOS c2600-advipservicesk9-mz.124-5a.

I try to connect C2611 to EWSD via 2 E1-PRI lines.

So I connect E1 0/0 to port A of EWSD, and E1 0/1 to port B of EWSD.

Cofiguration:

!

controller E1 0/0

pri-group timeslots 1-16

!

controller E1 0/1

pri-group timeslots 16-31

!

.......

!

interface Serial0/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn not-end-to-end 64

isdn incoming-voice voice

isdn send-alerting

isdn sending-complete

no cdp enable

!

interface Serial0/1:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn not-end-to-end 64

isdn incoming-voice voice

isdn send-alerting

isdn sending-complete

no cdp enable

!

.......

!

voice-port 0/0:15

!

voice-port 0/1:15

!

Of cource port A have only 1-15 voice timeslots, port B only 16-30 voice timeslots.

At first I see Error in logs like this:

"ISDN Se0/0:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2"

or

"ISDN Se0/1:15 Q931: Ux_DLRelInd: DL_REL_IND received from L2"

If pri-group was created at E1 0/0 and then at E1 0/1 then error appears at Se0/0:15

If pri-group was created at E1 0/1 and then at E1 0/0 then error appears at Se0/1:15

So error appears at first created Serial. Second Serial have no errors.

At second pri at EWSD port that is connected to port E1 0/0 is allways in down at station side,

but at cisco side it is up. Port connected to E1 0/1 is up from both sides and works correctly.

So if A connected to 0/0 and B connected to 0/1: A is down, B is up, 0/0:15 and 0/1:15 are up,

if A connected to 0/1 and B connected to 0/0: B is down, A is up, 0/0:15 and 0/1:15 are up.

At third if we have errors from "At First" at 0/0:15 - calls to 0/1 comes successfully.

But if we have errors at 0/1:15 than in logs I can see:

ISDN Se0/0:15 Q931: RX <- SETUP pd = 8 callref = 0x001D

Sending Complete

Bearer Capability i = 0x9090A3

Standard = CCITT

Transfer Capability = 3.1kHz Audio

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98392

Exclusive, Channel 18

Progress Ind i = 0x8083 - Origination address is non-ISDN

Called Party Number i = 0x81, '8'

Plan:ISDN, Type:Unknown

%ISDN-6-CHAN_UNAVAILABLE: Interface Se0/0:15 Requested Channel 18 is not available

ISDN Se0/0:15 **ERROR**: CCPMSG_InCall: Channel_ID IE invalid 44 (0x2C)

ISDN Se0/0:15 **ERROR**: CCPMSG_InCall: rejecting call

ISDN Se0/0:15 Q931: TX -> RELEASE_COMP pd = 8 callref = 0x801D

Cause i = 0x80AC181F - Requested circuit/channel not available

So Cisco tries to accept call (comming via 0/1) with Serial 0/0:15, but to timeslot 18.

And call cannot be accepted because of E1 0/0 don't use timeslot 18.

What should we do???

4 REPLIES
New Member

Re: C2611, AIM-VOICE-30 and two E1-PRI

Hi Alex

AFAIK there is no way to avoid inbound calls on unconfigured timeslots until other end of PRI conection will be instructed to use only 1-16 timeslots.

I have got the same with PA-VXB on 7204 VXR

There is only 12 DSP (that can accomodate 48 med-complexity calls) and 2 e1 PRI ports. And until I asked my provider to configure their end to use only 1-18 timeslonts on their second PRI there were a lot of inbound calls dropped with the same reason - %ISDN-6-CHAN_UNAVAILABLE

Sinserelly,

Andrews

New Member

Re: C2611, AIM-VOICE-30 and two E1-PRI

At EWSD side timeslots are configured corresponding configuration C2611:

Port A have 1-15 timeslots, Port B have 16-30 timeslots (like at cisco).

It is not our case

New Member

Re: C2611, AIM-VOICE-30 and two E1-PRI

However inbound call into timeslot 18 doesnt seems to be c2611 fault.

EWSD placed a call into 18 timeslot in spite of its configuration, right ?

New Member

Re: C2611, AIM-VOICE-30 and two E1-PRI

EWSD placed a call into 18 timeslot of port B (15-30 timeslots).

Port B connected to E1 0/1 (pri-group timeslots 16-31).

But call is processed to Se0/0:15 (E1 0/0 - pri-group timeslots 1-16).

Possibly it is bug of C2611

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