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Slip Errors on T1 Controller

waltzy
Level 1
Level 1

T1 Contollers on MGCP 3945 gateway accumulating Slip errors.  We have three PRI's inbound/outbound with the first set at clock source line primary.  We are experiencing problems with faxes not completed.  Fax machine's report line error and disconnect.   I think its a clocking issue but haven't had any luck.  Any suggestions 

1 Accepted Solution

Accepted Solutions

do network-clock-select 1 T1 0/0/0 and it will fix it...

Cheers,

Chad

View solution in original post

5 Replies 5

Chad Stachowicz
Level 6
Level 6

it is def clocking...

Please post your configuration or no one can help you.


Chad

version 15.0

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname 3945_Gateway-2

!

boot-start-marker

boot-end-marker

!

card type t1 0 0

card type t1 0 1

logging buffered 51200 warnings

!

aaa new-model

!

!

aaa authentication login default group tacacs+ local

aaa authentication login console none

aaa authorization exec default group tacacs+ local

aaa authorization exec console none

aaa authorization exec no-tacacs-console none

!

!

!

!

!

aaa session-id common

!

!

!

network-clock-participate wic 0

network-clock-participate wic 1

!

!

no ipv6 cef

ip source-route

ip cef

!

!

!

!

ip domain name pct.edu

!

multilink bundle-name authenticated

!

!

!

!

isdn switch-type primary-ni

!

voice-card 0

dspfarm

dsp services dspfarm

!

!

!

voice service voip

fax protocol t38 ls-redundancy 0 hs-redundancy 0 fallback none

!

!

!

!

license udi pid C3900-SPE150/K9 sn FOC14415CKU

hw-module pvdm 0/0

!

!

!

redundancy

!

!

controller T1 0/0/0

clock source line primary

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

controller T1 0/0/1

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

controller T1 0/1/0

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

controller T1 0/1/1

cablelength long 0db

pri-group timeslots 1-24 service mgcp

!

ip ssh version 2

!

!

!

!

!

!

!

interface GigabitEthernet0/0

ip address 10.3.0.246 255.255.0.0

duplex auto

speed auto

!

!

interface GigabitEthernet0/1

no ip address

shutdown

duplex auto

speed auto

!

!

interface GigabitEthernet0/2

no ip address

shutdown

duplex auto

speed auto

!

!

interface Serial0/0/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-ni

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

!

interface Serial0/0/1:23

no ip address

encapsulation hdlc

isdn switch-type primary-ni

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

!

interface Serial0/1/0:23

no ip address

encapsulation hdlc

isdn switch-type primary-ni

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

!

interface Serial0/1/1:23

no ip address

encapsulation hdlc

isdn switch-type primary-ni

isdn incoming-voice voice

isdn bind-l3 ccm-manager

no cdp enable

!

!

ip forward-protocol nd

!

ip http server

ip http authentication local

ip http secure-server

ip http timeout-policy idle 60 life 86400 requests 10000

!

ip route 0.0.0.0 0.0.0.0 10.3.1.1

!

!

!

!

!

nls resp-timeout 1

cpd cr-id 1

!

snmp-server community w1ldc4ts RW

snmp-server enable traps tty

tacacs-server host 10.150.0.251

tacacs-server timeout 10

tacacs-server directed-request

tacacs-server key iworkforpct

!

control-plane

!

!

!

voice-port 0/0/0:23

input gain -2

output attenuation 2

echo-cancel coverage 64

!

voice-port 0/1/0:23

input gain -2

output attenuation 2

echo-cancel coverage 64

!

voice-port 0/0/1:23

input gain -2

output attenuation 2

echo-cancel coverage 64

!

voice-port 0/1/1:23

input gain -2

output attenuation 2

echo-cancel coverage 64

!

ccm-manager fallback-mgcp

ccm-manager redundant-host 10.3.0.254

ccm-manager mgcp

no ccm-manager fax protocol cisco

ccm-manager music-on-hold

ccm-manager config server 10.3.0.254 

ccm-manager config

!

mgcp

mgcp call-agent 10.3.0.253 2427 service-type mgcp version 0.1

mgcp dtmf-relay voip codec all mode out-of-band

mgcp rtp unreachable timeout 1000 action notify

mgcp modem passthrough voip mode nse

mgcp ip qos dscp cs3 signaling

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 bind control source-interface GigabitEthernet0/0

mgcp bind media source-interface GigabitEthernet0/0

!

mgcp profile default

!

!

!

!

!

gatekeeper

shutdown

!

!

line con 0

authorization exec console

logging synchronous

login authentication console

line aux 0

line vty 0 4

session-timeout 30

exec-timeout 30 0

privilege level 15

transport input all

line vty 5 15

session-timeout 30

exec-timeout 30 0

privilege level 15

transport input all

!

scheduler allocate 20000 1000

ntp update-calendar

ntp server 10.133.2.1 prefer source GigabitEthernet0/0

version 15.0

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname 3945_Gateway-2

!

boot-start-marker

boot-end-marker

!

card type t1 0 0

card type t1 0 1

logging buffered 51200 warnings

!

aaa new-model

!

!

aaa authentication login default group tacacs+ local

aaa authentication login console none

aaa authorization exec default group tacacs+ local

aaa authorization exec console none

aaa authorization exec no-tacacs-console none

!

!

!

!

!

aaa session-id common

!

!

!

network-clock-participate wic 0

network-clock-participate wic 1

!

!

Payal Bhaduri
Cisco Employee
Cisco Employee

If you have slip errors, it is definitely related to clocking.

You must configure network-clock-participate and network-clock-select commands.


Here are some references:


http://www.cisco.com/en/US/docs/ios/12_3t/voice/command/reference/vrht_n1_ps5207_TSD_Products_Command_Reference_Chapter.html#wp1016893


http://www.cisco.com/en/US/tech/tk713/tk628/technologies_tech_note09186a00800f99bb.shtml#slipsecs

do network-clock-select 1 T1 0/0/0 and it will fix it...

Cheers,

Chad

Thanks guys.  That fixed the issue.