Cisco SPA1001 Administration Guide - Page 75

Chapter 4 Configuring the PSTN Gateway (FXO) How VoIP-To-PSTN Calls Work Table 1-27 VoIP User Account Information Parameter Group User ID PSTN 1/2/3/4/5/6/7/ Line 8 Password PSTN 1/2/3/4/5/6/7/ Line 8 User PSTN 1/2/3/4/5/6/7/ Line 8 DP Description The username value. Values 31-character string The password value. 31-character string Specifies the dial plan to be used for this VoIP Choice of 0-8 user. If 0, dial plan processing is disabled; the given target number is dialed to the PSTN as is. Note If Authentication is disabled, a default dial plan is used for all unknown VoIP users. Two-Stage Dialing In two-stage dialing, the SPA3102 takes the FXO port off-hook but does not automatically dial any digits after accepting the call. To invoke two-stage dialing, the VoIP caller should INVITE the PSTN Line without the user-id in the Request-URI or with a user-id that matches exactly the of the PSTN Line. A different user-id in the Request-URI is treated as a request for one-stage dialing if one-stage dialing is enabled, or dropped by the SPA3102 (as if no user-id is given) if one-stage dialing is disabled. Note If Authentication is disabled, a default dial plan is assigned to all VoIP callers. HTTP Digest Authentication can be also used for two-stage dialing, as in one-stage dialing. If using HTTP Digest Authentication or Authentication is disabled, the VoIP caller should hear the PSTN dial tone right after the call is answered (by a SIP 200 response). If PIN Authentication is enabled, the VoIP caller is prompted to enter a PIN number after the SPA3102 answers the call. The PIN number must end with a # key. The inter-PIN-digit timeout is 10 seconds (not configurable). Up to eight VoIP caller PIN numbers can be configured on the SPA3102. A dial plan can be selected for each PIN number. If the caller enters a wrong PIN or the SPA3102 times out waiting for more PIN digits, the SPA3102 tears down the call immediately with a BYE request. Note When the source address of the INVITE is 127.0.0.1, authentication is automatically disabled because this is a call by the local user. This applies to both one-stage and two-stage dialing. Table 1-28 lists the parameters used in two-stage dialing. Document Version 3.1 Linksys ATA Administrator Guide 4-3