Siemens TC63 User Manual download pdf (Page 236)

TC63 AT Command Set

TC63_ATC_V00.490 Page 236 of 501 5/24/05

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and can be active at the same time. This allows the user to have two parallel GPRS connections: for example

for sending or receiving emails over a GPRS connection enabled by the TCP/IP stack while, at the same time,

surfing the Internet over a Dial-Up Network GPRS connection.

Using Internet Service AT commands on several interfaces (ASC0, ASC1, USB or Multiplex mode on ASC0):

• A connection profile can be created on one interface and then viewed or changed on all other interfaces.

• A service profile can be used only on one interface at a time:

- Changes to a service profile are allowed only on the same interface where it was created, trying to change

it on another interface is denied with "+CME ERROR: Invalid index". If queried with the read command

AT^SISS the entire profile is returned on the interface where the service profile was created, while on all

other interfaces only the service type of the profile is stated.

- If a service profile is active (after opening it with AT^SISO) on one interface, any attempt to open or close

the same service profile on another interface is denied with "+CME ERROR: Operation temporary not

allowed".

- To free a service profile for use on another interface, use the AT^SISS command and select service type

= "none". This action deletes the entire profile and restores all parameters of the profile to their initial

power-up state (all values are empty). For example, to remove the service profile 3, set AT^SISS=3,svr-

type,none. After this, a new profile 3 can be created on any other interface.

Address notation

Server addresses must be provided as IP addresses in standard dot-format (e.g. "192.168.1.2") or as server

address names resolvable by a DNS server (e.g. "smtp.myserver.de" or "pop3.myserver.de").

Inactivity timeouts

Inactivity timeouts are not part of the Internet AT command functionality implemented in TC63 and, if desired,

are the responsibility of the host application. It is recommended that the host application validates URCs and AT

command responses and reacts adequately, for example by sending a close message or starting a timer.

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Siemens TC63 User Manual Page 236