Channelised T1 over IP

goncalo_gil · ‎06-26-2007

Hi guys,

I have the following setup:

PBX<--->Channelised T1 circuit<---->PBX

T1 set as TE

Coding B8ZS

Signalling None or Cass

ISDN Version Nortel

ISDN Country USA / Canada

Law mlaw

I would like to migrate the T1 to use our IP Data network. Like bellow

PBX T1<-->Router<--IP Net-->Router<-->PBX T1

I would like to encapsulate the T1/TDM over IP. Is there a way of doing with Cisco routers?

Thanks

Goncalo

paolo bevilacqua · ‎06-26-2007

Sure, actually cisco had invented the technology.

There are two methods: Circuit emulation over IP, that requires certain module types, and Voice over Ip, that require other ones. I recommed VoIP as it it more flexible and bandwidth efficient.

In both cases you would use ISR router, but while with VoIP a 2801 would be enough, with Circuit Emulation over IP you would need a minimum of 2811 because the form factor of the module is network module.

goncalo_gil · ‎06-26-2007

Many thanks for the reply.

Could you please be a little bit more specific about the technolog behind. Do you have a referal page for it?

I am having dificulty finding the documentation on this feature on 28xx.

Many thanks and kind regards

Goncalo

paolo bevilacqua · ‎06-26-2007

Hi,

there is a lot of documentation on CCO, the thing is if you never have done any VoIP design, you would probably find very confusing. I suggest you contact a reputable cisco partner/reseller and tell you want to connecte two ISDN PBX using 2801 "voice bundle" and the VWIC-1MFT-T1. If not unsure about the solution they propose you, came back here and ask again.

Pavel Bykov · ‎06-26-2007

Here is the data sheet, if that's what you are looking for.

http://www.cisco.com/en/US/customer/products/ps5854/products_data_sheet09186a00802045f5.html

abduljaleel · ‎11-20-2011

Hello Team,

I have done a similar set up , so i have a router connected to the PBX at both the end with NM-CEM-4TE1 modules and below is the configuration that i applied. but my cem interface is not coming up, can some one verify my config and updated me.

controller E1 0/1/0

framing NO-CRC4

pri-group timeslots 1-31

!

controller E1 0/1/1

!

controller E1 1/0

framing NO-CRC4

cem-group 6 timeslots 1-31

clock source adaptive 6

!

controller E1 1/1

!

controller E1 1/2

!

controller E1 1/3

!

cem 1/0/6

xconnect 10.253.253.1 0 encapsulation udp

local ip addr 10.253.252.1

local udp port 15901

remote udp port 15902

Thank You

AJ

abduljaleel · ‎11-20-2011

Hello Team,

I have a similar set up but with singe connection only. below is my configuration but the cem interface is not coming up. can some one verify my configuration and advise is am missing something

controller E1 0/1/0

framing NO-CRC4

pri-group timeslots 1-31

!

controller E1 0/1/1

!

controller E1 1/0

framing NO-CRC4

cem-group 6 timeslots 1-31

clock source adaptive 6

!

controller E1 1/1

!

controller E1 1/2

!

controller E1 1/3

!

cem 1/0/6

xconnect 10.253.253.1 0 encapsulation udp

local ip addr 10.253.252.1

local udp port 15901

remote udp port 15902

Thank You

AJ