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Two QSIG between Siemens Hicom 300E and CUCM 8.5

sebastiangille
Level 1
Level 1

Hi,

we want to connect a Siemens Hicom 300E with the Cisco CUCM 8.5, we need two QSIG-Trunks, each trunk ends on one of two Cisco 2901 with VWIC3-2MFT-T1/E1. The port for each trunk is on one of the E1-Ports.

I configured both ends the same as the other.

The QSIG variant ist ECMA v1.

The problem is that the realiability on one of those trunks are very poor, one link periodically loses the Layer 2 connectivity.

We have no Layer 1 problems, everything is measured.

We exchange everything, cable, ports, router E1-Ports and siemens-ports, also between themselves ( the problem is not situated on one router or E1-Port, if you change to the other the problem move on.

The siemens technician found no config problem on his side, but he has also Layer 2 problems on one trunk.

What might be the problem?

Thanks a lot

8 Replies 8

sebastiangille
Level 1
Level 1

it seems to be a problem with the clocking, but im not sure what the correct clocking is, it might be a configuration "issue" on the siemens side.

Has anybody experience or best practices in connecting multiple spans from Siemens Hicom 300E to Cisco?

Thanks a lot

Hi,

Can you post the config of the 2901.

Does the hicom clock from the pstn

Regards

Alex

Regards, Alex. Please rate useful posts.

Hi,

"Does the hicom clock from the pstn?"

i will ask the technician, the last statement was that the hicom set the clock, but im not sure if that means automatically pstn.

config 2901 ( same config on the other router ):

version 15.1

service timestamps debug datetime localtime

service timestamps log datetime localtime

service password-encryption

service linenumber

service sequence-numbers

service counters max age 5

!

hostname xxxx

!

boot-start-marker

boot-end-marker

!

!

card type e1 0 0

!

aaa new-model

!

!

aaa authentication login default local

aaa authorization exec default local

!

!

!

!

!

aaa session-id common

!

clock timezone MET 1 0

clock summer-time MEST recurring last Sun Mar 2:00 last Sun Oct 3:00

network-clock-participate wic 0

network-clock-select 1 E1 0/0/1

!

no ipv6 cef

no ip source-route

ip cef

!

!

!

!

!

ip domain name xxxx

ip name-server xxxx

!

multilink bundle-name authenticated

!

!

!

!

isdn switch-type primary-net5

!

crypto pki token default removal timeout 0

!

!

voice-card 0

!

!

!

voice service voip

fax protocol pass-through g711alaw

modem passthrough nse codec g711alaw

!

!

!

!

!

license udi pid CISCO2901/K9 sn FGL1546285L

hw-module pvdm 0/0

!

!

!

!

redundancy

!

!

!

!

controller E1 0/0/0

pri-group timeslots 1-31 service mgcp

description PSTN

!

controller E1 0/0/1

pri-group timeslots 1-31 service mgcp

description qsig

!

ip ssh version 2

!

!

!

!

!

!

!

interface Embedded-Service-Engine0/0

no ip address

shutdown

!

interface GigabitEthernet0/0

ip address xxxxx

duplex auto

speed auto

!

interface GigabitEthernet0/1

no ip address

shutdown

duplex auto

speed auto

!

interface Serial0/0/0:15

no ip address

encapsulation hdlc

isdn switch-type primary-net5

isdn overlap-receiving

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

interface Serial0/0/1:15

no ip address

encapsulation hdlc

isdn switch-type primary-qsig

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

ip forward-protocol nd

!

no ip http server

no ip http secure-server

!

ip route 0.0.0.0 0.0.0.0 xxxxx

!

!

!

!

!

!

!

!

!

control-plane

!

!

voice-port 0/0/0:15

echo-cancel coverage 64

cptone DE

!

voice-port 0/0/1:15

echo-cancel coverage 64

cptone DE

!

ccm-manager fallback-mgcp

ccm-manager redundant-host xxxx

ccm-manager mgcp

no ccm-manager fax protocol cisco

ccm-manager music-on-hold

ccm-manager config server xxxx

ccm-manager config

!

mgcp

mgcp call-agent xxxx 2427 service-type mgcp version 0.1

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp modem passthrough voip codec g711alaw

mgcp package-capability rtp-package

mgcp package-capability sst-package

mgcp package-capability pre-package

no mgcp package-capability res-package

no mgcp package-capability fxr-package

no mgcp timer receive-rtcp

mgcp sdp simple

mgcp fax t38 inhibit

mgcp rtp payload-type g726r16 static

!

mgcp profile default

!

!

dial-peer voice 100 pots

service mgcpapp

incoming called-number .

direct-inward-dial

port 0/0/0:15

!

dial-peer voice 101 pots

service mgcpapp

incoming called-number .

direct-inward-dial

!

!

!

!

gatekeeper

shutdown

!

!

!

line con 0

line aux 0

line 2

no activation-character

no exec

transport preferred none

transport input all

transport output pad telnet rlogin lapb-ta mop udptn v120 ssh

stopbits 1

line vty 0 4

exec-timeout 0 0

logging synchronous

transport input telnet ssh

!

scheduler allocate 20000 1000

ntp server ...

end

Hi,

This router is taking its clock from the HICOM

Config looks OK

network-clock-participate wic 0

network-clock-select 1 E1 0/0/1

I would add

!

network-clock-select 2 E1 0/0/0

!

Now if the 0/0/1 interface fails then the 0/0/0 will become the clock source.

HTH

Alex

Regards, Alex. Please rate useful posts.

Hi,

thanks for your reply.

The E 0/0/0 is currently not in use, i will add that statement if the port goes up.

"Does the hicom clock from the pstn"

Hicom clocks from pstn

The latest information about the pbx config is that both qsiq work like a bundle, they can't

separate the qsiq, because the same call routing from pbx to another pbx can only be situated exactly on one or a bundle of trunks.

by the way, the problem is solved. It was a defect at the Siemens PBX

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