International Dialing – VGW

When dialing internationally, each carrier can differ based on the ISDN type they accept.  To override the default ISDN type and plan generated by the router, use the command below within your Serial interface:

isdn map address [[address | reg-exp] plan plan type type | transparent]

The carrier may reject your default “International” ISDN type which you should notice from a Q.931 debug:

Called Party Number i = 0×91, ’0118704421234′
Plan:ISDN, Type:International
Aug 18 18:12:25: ISDN Se0/0/0:23 Q931: RX <- RELEASE_COMP pd = 8  callref = 0×8112
Cause i = 0x809C – Invalid number format (incomplete number)

Example:

interface Serial0/0/0:23
no ip address
encapsulation hdlc
isdn switch-type primary-ni
isdn incoming-voice voice
isdn map address 011.* plan isdn type unknown
no cdp enable

…

dial-peer voice 90111 pots
corlist outgoing call-international    (CME ONLY)
preference 1
destination-pattern 9011T
port 0/0/0:23
prefix 011



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