Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
New Member

two routers connected via E1

Hello!

There are two 1760, the first one has VWIC2-1MFT-T1/E1, the other VWIC2-2MFT-G703. They are directly connected by E1 crossover cable, to emulate connection between a cisco router and a PBX.

I've configured CCME on both routers, the first one (1760-First) having the extension range 1xxx for IP phones, the second (1760-Second) - 2xxx.

This is how I've configured routers.

------------------------------------

==== 1760-First ===

Phones have 1xxx range.

Only a part of config having realtion to voice is displayed.

isdn switch-type primary-qsig

controller E1 0/0

pri-group timeslots 1-4,16

interface Serial0/0:15

no ip address

encapsulation hdlc

no logging event link-status

isdn switch-type primary-qsig

isdn timer T310 120000

isdn protocol-emulate network

isdn incoming-voice voice

no cdp enable

voice-port 0/0:15

dial-peer voice 10 pots

destination-pattern 2...

port 0/0:15

==== 1760-Second ===

Phone have 2xxx range

isdn switch-type primary-qsig

!

controller E1 0/0

pri-group timeslots 1-4,16

interface Serial0/0:15

no ip address

encapsulation hdlc

no logging event link-status

isdn switch-type primary-qsig

isdn incoming-voice voice

no cdp enable

voice-port 0/0:15

!

!

!

dial-peer voice 10 pots

destination-pattern 1...

port 0/0:15

---------------------------------

However, when I attempt to make a call from 1001 to 2001 (or vice versa), the call doesn't proceed. I hear a signal, and after some time the calling phone drops the call. At the time, other phone displays no coming calls.

What is the most likely reason of the problem?.. Here is the debug output tkaen from 1760-Second:

*Mar 11 00:48:51.117: ISDN Se0/0:15 Q931: RX <- SETUP pd = 8 callref = 0x008B

Bearer Capability i = 0x8090A3

Standard = CCITT

Transfer Capability = Speech

Transfer Mode = Circuit

Transfer Rate = 64 kbit/s

Channel ID i = 0xA98381

Exclusive, Channel 1

Progress Ind i = 0x8183 - Origination address is non-ISDN

Calling Party Number i = 0x0080, '1001'

Plan:Unknown, Type:Unknown

Called Party Number i = 0x80, '001'

Plan:Unknown, Type:Unknown

*Mar 11 00:48:51.165: ISDN Se0/0:15 Q931: TX -> CALL_PROC pd = 8 callref = 0x808B

Channel ID i = 0xA98381

Exclusive, Channel 1

*Mar 11 00:48:51.165: ISDN Se0/0:15 Q931: TX -> CONNECT pd = 8 callref = 0x808B

Connected Number i = 0x80, '001'

*Mar 11 00:48:51.185: ISDN Se0/0:15 Q931: RX <- CONNECT_ACK pd = 8 callref = 0x008B

*Mar 11 00:49:07.143: ISDN Se0/0:15 Q931: RX <- DISCONNECT pd = 8 callref = 0x008B

Cause i = 0x8290 - Normal call clearing

*Mar 11 00:49:07.155: ISDN Se0/0:15 Q931: TX -> RELEASE pd = 8 callref = 0x808B

*Mar 11 00:49:07.167: ISDN Se0/0:15 Q931: RX <- RELEASE_COMP pd = 8 callref = 0x008B

I cannont understand why the first figure of the number 2001 is dropped?..

I'll be very grateful for ideas.

Regards,

Dmitry

2 REPLIES
Hall of Fame Super Gold

Re: two routers connected via E1

Hi,

This happens because POTS DP consumes the digits matched in destination-pattern.

So under dial-peer, configure "forward-digits all" or "no digit-strip".

You also need a pots DP with DID, like:

dial-peer voice 333 pots

incoming called-number ....

direct-inward-dial

Hope this helps, please rate post if it does!

New Member

Re: two routers connected via E1

O, yes, I chould have recalled about DID...

Many thanks!

272
Views
5
Helpful
2
Replies
CreatePlease to create content