11 List of system parameters

04.563GPPGSM Cordless Telephony System (CTS), (Phase 1) CTS Radio Interface Layer 3 SpecificationTS

The description of timers in the following table should be considered a brief summary. The precise details are found in sections 3 to 6, which should be considered the definitive descriptions.

11.1 Timers and counters for radio resource management

11.1.1 Timers on the MS side

TC3150 This timer is started after sending the maximum allowed CTS ACCESS REQUEST message during an immediate assignment procedure. Its value is 5 s.

TC3151 This timer is used to delay the channel deactivation (see GSM 04.08 11.1.1 T3110).

11.1.2 Timers on the CTS‑FP side

TC3101 This timer is started when the CTS-FP send a CTS PAGING REQUEST(CTSMSI, AliveCheck flag) for an Alive check procedure, and stopped when receiving a valid CTS ACCESS REQUEST. Its value is manufacturer dependent.

TC3102 Hunting maximal duration timer. Its value is manufacturer dependent, but should be less than 120 s.

TC3103 This timer is started when a channel is allocated with a CTS IMMEDIATE ASSIGN message. It is stopped when the CTS‑MS has correctly seized the channels. Its value is manufacturer dependent, but should be greater than 1 s.

TC3104 This timer is started when the CTS‑FP has sent a CTS PAGING REQUEST message and is stopped when the CTS‑FP has received the CTS PAGING RESPONSE. Its value is manufacturer dependent.

TC3105 This timer is started when the CTS‑FP has sent a CTS INTRACELL HANDOVER COMMAND message and is stopped when the CTS‑MS has correctly seized the new channel. Its value is manufacturer dependent.

TC3106 See GSM 04.08 11.1.2 T3109

TC3107 See GSM 04.08 11.1.2 T3111

11.1.3 Other parameters

MCTS The maximum number of retransmission for the CTS ACCESS REQUEST message. Its value is 7.

11.2 Timers of mobility management

11.2.1 Timers on the MS side

TC3250 This timer is started when the mobile station has sent a CTS ATTACH REQUEST message and it is normally stopped when the mobile station receives a CTS ATTACH COMPLETE message or a CTS ATTACH REJECT message. At its expiry, the mobile station shall start TC3251.
Its value is 20 s.

TC3251 This timer is started when the timer TC3250 expires. Its value is 5 minutes.

TC3252 This timer is started when the mobile station enters the CTS MM IDLE state and it is normally stopped when the mobile station leaves this state. At its expiry, the mobile station shall start the CTS re-attach procedure.
Its value is provided by the fixed part during the CTS attach procedure and is greater than TC3201 + NC300 * TC3101 and should be less than TC3201 + 2* NC300 * TC3101.

TC3253 This timer is started when the mobile station has sent a CTS DETACH INDICATION message and it is normally stopped when the RR connection is released.
Its value is 5 s.

TC3254 This timer is started when the mobile station has sent a CTS ENROLMENT REQUEST message and it is normally stopped when a CTS ENROLMENT ACCEPT message is received.
Its value is 45 s.

TC3255 This timer is started when the mobile station has sent a CTS RE-ATTACH REQUEST message and it is normally stopped when a CTS RE-ATTACH RESPONSE message is received.
Its value is 5 s.

TC3256 This timer is started when the mobile station has received a CTS ATTACH REJECT with a fixed part identity. At its expiry, the mobile station may re-attempt an attachment on a fixed part having the same FPBI.
Its value is 10 minutes.

TC3257 This timer is started when the mobile station has received a CTS ATTACH REJECT from the expected fixed part with a cause different of NOT ENROLLED. At its expiry, the mobile station may re-attempt an attachment on that fixed part.
Its value is 5 minutes.

TC3260 This timer is started when the mobile station has sent a CTS MS AUTHENTICATION RESPONSE message and it is normally stopped when a CTS FP AUTHENTICATION RESPONSE message is received.
Its value is 5 s.

11.2.2 Timers on the CTS-FP side

TC3201 This timer is started when the fixed part enters the MM IDLE state and it is normally stopped when the fixed part leaves the MM IDLE state. At its expiry, the MM sublayer shall trigger the alive check procedure.
Its value is manufacturer dependent, but greater than 15s.

TC3202 This timer is started when the fixed part has sent a CTSMSI UPDATE COMMAND message and it is normally stopped when a CTSMSI UDPATE COMPLETE message is received.
Its value is 5 s.

TC3211 This timer is started when the fixed part has sent a CTS MS AUTHENTICATION REQUEST message and it is normally stopped when a CTS MS AUTHENTICATION RESPONSE message is received.
Its value is 5 s.

11.2.3 Other parameters

NC320 The maximum number of alive check procedures allowed before changing the CTSMSI. Its value is manufacturer dependent.

11.3 Timers of circuit-switched call control

See GSM 04.08, section 11.3

Annex A (informative):
Default Codings of Information Elements

This annex is informative.

The information in this annex does NOT define the value of any IEI for any particular message. This annex exists to aid the design of new messages.