[asterisk-users] Digium G100 and CID Dropping First Digit.

[Daniel Tryba]

On Mon, Jan 15, 2018 at 10:41:27PM +0000, David Klaverstyn wrote:
> port1 < Calling Number (len=12) [ Ext: 0  TON: National Number (2)  NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)
> port1 <                           Presentation: Presentation allowed of network provided number (3)  '21xxxxxx' ]
> port1 < [70 0a c1 30 34 39 31 34 31 32 31 34]
> port1 < Called Number (len=12) [ Ext: 1  TON: Subscriber Number (4)  NPI: ISDN/Telephony Numbering Plan (E.164/E.163) (1)  '049xxxxxx' ]
> 
> -- Accepting call from '21xxxxxx' to '049xxxxxx' on channel 0/5, span 1

Don't know anything about the card you are using, but seeing ISDN
signaling that the type of number (TON) is national and that means
overhere that leading zeros are stripped, I see nothing wrong with it.
Looking at my old chan_dadhi configs there are options to prefix
something based on TON. So over here I have configured:
nationalprefix = 0
to prefix the leading 0 for national numbers that callees expect.
The G100 manual contains the phrase "national prefix", but no info about
it, so look into those prefix options.