[Asterisk-Users] PRI in Shanghai China

[Steve Underwood]

Edwin Lam wrote:

> hi folks.
>
> does any one have experience setting up E1 PRI in Shanghai, China?
> it works fine when we use SIP phone to dial out, however when
> using forward function on the same phone, it seems like it's dialing
> out but there's actually no respond from the phone company (China 
> Telecom)
> and eventually the dial command will timed out.
>
> here's our PRI portion of zapata.conf:
>
> switchtype=euroisdn
> nsf=none
> pridialplan=unknown
> internationalprefix = 00
> nationalprefix = 0
> localprefix = privateprefix = unknownprefix =
> signalling=pri_cpe
> hidecallerid=no
> usecallingpres=yes
> callerid=asreceived
> channel => 1-15
> channel => 17-31
>
> any clues?

China Telecom can be very fussy about getting the TON and NPI values 
right, and some installations simply fail to respond to things they 
don't like. As with all telcos, if things don't work properly asking 
China Telecom to help is usually a frustrating task.

Steve