[cisco-voip] how to map DIDs to extensions during SRST

[Robert Kulagowski]

Lelio Fulgenzi wrote:
> I want to make sure that this doesn't interfere with the immediate 
> dialing of extensions while in srst mode. for example, the alias will be 
> something like 6135551212 but they will have extensions 61xxx on the site.

If I understand the question, we use translation patterns on the inbound 
dial-peers

voice translation-rule 33
  rule 1 /^16/ /3316/
  rule 2 /^7111/ /331600/

So, an incoming number that starts with 16 gets converted to 3316
A number that starts with 7111 gets converted to 331600 (our receptionist)

voice translation-profile PREFIXDID
  translate called 33

voice-port 0/1/0:23
  translation-profile incoming PREFIXDID
  input gain -3
  output attenuation -6
  echo-cancel coverage 24
  echo-cancel erl worst-case 0
  playout-delay minimum low
  no comfort-noise

As far as assigning extensions, when the phones go into SRST mode, 
_they_ tell the router what their extension is, so that's built 
automatically.  So if you had a 6-digit extension on line 1 that will 
automatically get configured on the router.