[asterisk-dev] Libpri - ISDN SETUP called number length

[Leonid Fainshtein]

I'd like to add some more details. This is actually EuroISDN requirement.

The ETS 300 102-1 states:

4.5.8 Called party number
The purpose of the Called party number information element is to 
identify the called party of a call.
The Called party number information element is coded as shown in figure 
4.14 and table 4.8.
The maximum length of this information element is 23 octets.

The ITU-T Q.931 states:

4.5.8 Called party number
The purpose of the Called party number information element is to 
identify the called party of a call.
The Called party number information element is coded as shown in Figure 
4-14 and Table 4-9.
The maximum length of this information element is network dependent.

Leonid Fainshtein
Xorcom Ltd

On 07/26/2010 11:40 AM, Ing. Stefano Blasco wrote:
> Hi all,
> as a result of some intensive protocol tests we have found some problem
> on Libpri/asterisk that i want to share with you;
> The test environment is Debian stable with asterisk version 1.6.2.8
> dahdi 2.3.0.1
> and libpri 1.4.11.2. The cards that we are using are loaded with dahdi
> kernel modules for PRI (wct4xxp for Openvox D410E) and for BRI (wcb4xxp
> for Openvox B200E).
>
> The problem is:
> In the ISDN SETUP message the called number must be limited to 20
> digits, and when you have to send more than 20 digits they must be
> overlapped using other information units (like it is done in overlap
> dial). During the test, instead, we have sent 25 digit together and this
> is a negative result.
>
> Do you have any idea?
>
>
>